CVE-2024-56770: net/sched: netem: account for backlog updates from child qdisc

Published Jan 8, 2025
·
Updated

In the Linux kernel, the following vulnerability has been resolved:

net/sched: netem: account for backlog updates from child qdisc

In general, 'qlen' of any classful qdisc should keep track of the number of packets that the qdisc itself and all of its children holds. In case of netem, 'qlen' only accounts for the packets in its internal tfifo. When netem is used with a child qdisc, the child qdisc can use 'qdisctreereducebacklog' to inform its parent, netem, about created or dropped SKBs. This function updates 'qlen' and the backlog statistics of netem, but netem does not account for changes made by a child qdisc. 'qlen' then indicates the wrong number of packets in the tfifo. If a child qdisc creates new SKBs during enqueue and informs its parent about this, netem's 'qlen' value is increased. When netem dequeues the newly created SKBs from the child, the 'qlen' in netem is not updated. If 'qlen' reaches the configured sch->limit, the enqueue function stops working, even though the tfifo is not full.

Reproduce the bug: Ensure that the sender machine has GSO enabled. Configure netem as root qdisc and tbf as its child on the outgoing interface of the machine as follows: $ tc qdisc add dev <oif> root handle 1: netem delay 100ms limit 100 $ tc qdisc add dev <oif> parent 1:0 tbf rate 50Mbit burst 1542 latency 50ms

Send bulk TCP traffic out via this interface, e.g., by running an iPerf3 client on the machine. Check the qdisc statistics: $ tc -s qdisc show dev <oif>

Statistics after 10s of iPerf3 TCP test before the fix (note that netem's backlog > limit, netem stopped accepting packets): qdisc netem 1: root refcnt 2 limit 1000 delay 100ms Sent 2767766 bytes 1848 pkt (dropped 652, overlimits 0 requeues 0) backlog 4294528236b 1155p requeues 0 qdisc tbf 10: parent 1:1 rate 50Mbit burst 1537b lat 50ms Sent 2767766 bytes 1848 pkt (dropped 327, overlimits 7601 requeues 0) backlog 0b 0p requeues 0

Statistics after the fix: qdisc netem 1: root refcnt 2 limit 1000 delay 100ms Sent 37766372 bytes 24974 pkt (dropped 9, overlimits 0 requeues 0) backlog 0b 0p requeues 0 qdisc tbf 10: parent 1:1 rate 50Mbit burst 1537b lat 50ms Sent 37766372 bytes 24974 pkt (dropped 327, overlimits 96017 requeues 0) backlog 0b 0p requeues 0

tbf segments the GSO SKBs (tbfsegment) and updates the netem's 'qlen'. The interface fully stops transferring packets and "locks". In this case, the child qdisc and tfifo are empty, but 'qlen' indicates the tfifo is at its limit and no more packets are accepted.

This patch adds a counter for the entries in the tfifo. Netem's 'qlen' is only decreased when a packet is returned by its dequeue function, and not during enqueuing into the child qdisc. External updates to 'qlen' are thus accounted for and only the behavior of the backlog statistics changes. As in other qdiscs, 'qlen' then keeps track of how many packets are held in netem and all of its children. As before, sch->limit remains as the maximum number of packets in the tfifo. The same applies to netem's backlog statistics.

Other sources

This CVE was automatically created from a reference found in an email or other text. If you are reading this, then this CVE entry is probably erroneous, since this text should be replaced by the official CVE description automatically.

— Launchpad

Affected Software

222 affected componentsFixes available
Linux Linux kernel>=3.3<5.4.288
Linux Linux kernel>=5.5<5.10.232
Linux Linux kernel>=5.11<5.15.175
Linux Linux kernel>=5.16<6.1.121
Linux Linux kernel>=6.2<6.6.67
Linux Linux kernel>=6.7<6.12.6
Linux Linux kernel=6.13-rc1
Linux Linux kernel=6.13-rc2
Microsoft cbl2 kernel 5.15.173.1-2<5.15.176.3-1
5.15.176.3-1
Microsoft azl3 kernel 6.6.76.1-1<6.6.76.1-1
6.6.76.1-1
Microsoft azl3 kernel 6.6.64.2-9<6.6.76.1-1
6.6.76.1-1
Microsoft cbl2 kernel 5.15.176.3-1<5.15.176.3-1
5.15.176.3-1
debian/linux<6.1.123-1
6.1.123-1
debian/linux<6.12.6-1
6.12.6-1
debian/linux<6.12.6-1
6.12.6-1
debian/linux
6.1.176-16.1.190-16.12.107-16.12.115-27.2.12-17.2.15-1
ubuntu/linux*
ubuntu/linux-aws<4.4.0-1143.149
4.4.0-1143.149
ubuntu/linux-azure<4.15.0-1188.203~14.04.1
4.15.0-1188.203~14.04.1
ubuntu/linux-lts-xenial<4.4.0-268.302~14.04.1
4.4.0-268.302~14.04.1
ubuntu/linux<4.4.0-268.302
4.4.0-268.302
ubuntu/linux-aws<4.4.0-1181.196
4.4.0-1181.196
ubuntu/linux-aws-hwe<4.15.0-1180.193~16.04.1
4.15.0-1180.193~16.04.1
ubuntu/linux-azure<4.15.0-1188.203~16.04.1
4.15.0-1188.203~16.04.1
ubuntu/linux-gcp<4.15.0-1173.190~16.04.1
4.15.0-1173.190~16.04.1
ubuntu/linux-hwe<4.15.0-237.249~16.04.1
4.15.0-237.249~16.04.1
ubuntu/linux-kvm<4.4.0-1144.155
4.4.0-1144.155
ubuntu/linux-oracle<4.15.0-1142.153~16.04.1
4.15.0-1142.153~16.04.1
ubuntu/linux-hwe-edge*
ubuntu/linux-fips<4.4.0-1113.120
4.4.0-1113.120
ubuntu/linux-fips*
ubuntu/linux<4.15.0-237.249
4.15.0-237.249
ubuntu/linux-aws<4.15.0-1180.193
4.15.0-1180.193
ubuntu/linux-aws-5.0*
ubuntu/linux-aws-5.3*
ubuntu/linux-aws-5.4<5.4.0-1142.152~18.04.1
5.4.0-1142.152~18.04.1
ubuntu/linux-azure*
ubuntu/linux-azure-4.15<4.15.0-1188.203
4.15.0-1188.203
ubuntu/linux-azure-5.3*
ubuntu/linux-azure-5.4<5.4.0-1147.154~18.04.1
5.4.0-1147.154~18.04.1
ubuntu/linux-azure-edge*
ubuntu/linux-gcp*
ubuntu/linux-gcp-4.15<4.15.0-1173.190
4.15.0-1173.190
ubuntu/linux-gcp-5.3*
ubuntu/linux-gcp-5.4<5.4.0-1145.154~18.04.1
5.4.0-1145.154~18.04.1
ubuntu/linux-gke-4.15*
ubuntu/linux-gke-5.4*
ubuntu/linux-gkeop-5.4*
ubuntu/linux-hwe*
ubuntu/linux-hwe-5.4<5.4.0-211.231~18.04.1
5.4.0-211.231~18.04.1
ubuntu/linux-hwe-edge*
ubuntu/linux-ibm-5.4<5.4.0-1090.95~18.04.1
5.4.0-1090.95~18.04.1
ubuntu/linux-kvm<4.15.0-1163.168
4.15.0-1163.168
ubuntu/linux-oem*
ubuntu/linux-oracle<4.15.0-1142.153
4.15.0-1142.153
ubuntu/linux-oracle-5.0*
ubuntu/linux-oracle-5.3*
ubuntu/linux-oracle-5.4<5.4.0-1140.149~18.04.1
5.4.0-1140.149~18.04.1
ubuntu/linux-raspi-5.4<5.4.0-1129.142~18.04.1
5.4.0-1129.142~18.04.1
ubuntu/linux-aws-fips<4.15.0-2118.124
4.15.0-2118.124
ubuntu/linux-azure-fips<4.15.0-2097.103
4.15.0-2097.103
ubuntu/linux-fips<4.15.0-1135.146
4.15.0-1135.146
ubuntu/linux-gcp-fips<4.15.0-2081.87
4.15.0-2081.87
ubuntu/linux-aws-fips*
ubuntu/linux-azure-fips*
ubuntu/linux-fips*
ubuntu/linux-gcp-fips*
ubuntu/linux<5.4.0-211.231
5.4.0-211.231
ubuntu/linux-aws<5.4.0-1142.152
5.4.0-1142.152
ubuntu/linux-aws-5.15<5.15.0-1080.87~20.04.1
5.15.0-1080.87~20.04.1
ubuntu/linux-azure<5.4.0-1147.154
5.4.0-1147.154
ubuntu/linux-azure-5.15<5.15.0-1086.95~20.04.1
5.15.0-1086.95~20.04.1
ubuntu/linux-bluefield<5.4.0-1101.108
5.4.0-1101.108
ubuntu/linux-gcp<5.4.0-1145.154
5.4.0-1145.154
ubuntu/linux-gcp-5.15<5.15.0-1081.90~20.04.1
5.15.0-1081.90~20.04.1
ubuntu/linux-hwe-5.15<5.15.0-136.147~20.04.1
5.15.0-136.147~20.04.1
ubuntu/linux-ibm<5.4.0-1088.93
5.4.0-1088.93
ubuntu/linux-ibm-5.15<5.15.0-1074.77~20.04.1
5.15.0-1074.77~20.04.1
ubuntu/linux-intel-iotg-5.15<5.15.0-1077.83~20.04.1
5.15.0-1077.83~20.04.1
ubuntu/linux-iot<5.4.0-1048.51
5.4.0-1048.51
ubuntu/linux-kvm<5.4.0-1129.138
5.4.0-1129.138
ubuntu/linux-lowlatency-hwe-5.15<5.15.0-135.146~20.04.1
5.15.0-135.146~20.04.1
ubuntu/linux-oracle<5.4.0-1140.150
5.4.0-1140.150
ubuntu/linux-oracle-5.15<5.15.0-1077.83~20.04.1
5.15.0-1077.83~20.04.1
ubuntu/linux-raspi<5.4.0-1129.142
5.4.0-1129.142
ubuntu/linux-riscv-5.15<5.15.0-1075.79~20.04.1
5.15.0-1075.79~20.04.1
ubuntu/linux-xilinx-zynqmp<5.4.0-1060.64
5.4.0-1060.64
ubuntu/linux-aws-5.11*
ubuntu/linux-aws-5.13*
ubuntu/linux-aws-5.8*
ubuntu/linux-azure-5.11*
ubuntu/linux-azure-5.13*
ubuntu/linux-azure-5.8*
ubuntu/linux-azure-fde*
ubuntu/linux-gcp-5.11*
ubuntu/linux-gcp-5.13*
ubuntu/linux-gcp-5.8*
ubuntu/linux-gke*
ubuntu/linux-gke-5.15*
ubuntu/linux-gkeop*
ubuntu/linux-gkeop-5.15*
ubuntu/linux-hwe-5.11*
ubuntu/linux-hwe-5.13*
ubuntu/linux-hwe-5.8*
ubuntu/linux-intel-5.13*
ubuntu/linux-nvidia-tegra-5.15<5.15.0-1039.39~20.04.1
5.15.0-1039.39~20.04.1
ubuntu/linux-oem-5.10*
ubuntu/linux-oem-5.13*
ubuntu/linux-oem-5.6*
ubuntu/linux-oracle-5.11*
ubuntu/linux-oracle-5.13*
ubuntu/linux-oracle-5.8*
ubuntu/linux-raspi2*
ubuntu/linux-riscv*
ubuntu/linux-riscv-5.11*
ubuntu/linux-riscv-5.8*
ubuntu/linux-aws-fips<5.4.0-1142.153+fips1
5.4.0-1142.153+fips1
ubuntu/linux-azure-fips<5.4.0-1147.154+fips1
5.4.0-1147.154+fips1
ubuntu/linux-fips<5.4.0-1116.126
5.4.0-1116.126
ubuntu/linux-gcp-fips<5.4.0-1145.154+fips1
5.4.0-1145.154+fips1
ubuntu/linux-aws-fips*
ubuntu/linux-azure-fips*
ubuntu/linux-fips*
ubuntu/linux-gcp-fips*
ubuntu/linux<5.15.0-135.146
5.15.0-135.146
ubuntu/linux-allwinner-5.19*
ubuntu/linux-aws<5.15.0-1080.87
5.15.0-1080.87
ubuntu/linux-aws-5.19*
ubuntu/linux-aws-6.2*
ubuntu/linux-aws-6.5*
ubuntu/linux-aws-6.8<6.8.0-1029.31~22.04.1
6.8.0-1029.31~22.04.1
ubuntu/linux-azure<5.15.0-1084.93
5.15.0-1084.93
ubuntu/linux-azure-5.19*
ubuntu/linux-azure-6.2*
ubuntu/linux-azure-6.5*
ubuntu/linux-azure-6.8<6.8.0-1029.34~22.04.1
6.8.0-1029.34~22.04.1
ubuntu/linux-azure-fde<5.15.0-1084.93.1
5.15.0-1084.93.1
ubuntu/linux-azure-fde-5.19*
ubuntu/linux-azure-fde-6.2*
ubuntu/linux-gcp<5.15.0-1079.88
5.15.0-1079.88
ubuntu/linux-gcp-5.19*
ubuntu/linux-gcp-6.2*
ubuntu/linux-gcp-6.5*
ubuntu/linux-gcp-6.8<6.8.0-1030.32~22.04.1
6.8.0-1030.32~22.04.1
ubuntu/linux-gke<5.15.0-1077.83
5.15.0-1077.83
ubuntu/linux-gkeop<5.15.0-1062.70
5.15.0-1062.70
ubuntu/linux-hwe-5.19*
ubuntu/linux-hwe-6.2*
ubuntu/linux-hwe-6.5*
ubuntu/linux-hwe-6.8<6.8.0-60.63~22.04.1
6.8.0-60.63~22.04.1
ubuntu/linux-ibm<5.15.0-1072.75
5.15.0-1072.75
ubuntu/linux-ibm-6.8<6.8.0-1026.26~22.04.1
6.8.0-1026.26~22.04.1
ubuntu/linux-intel-iot-realtime<5.15.0-1073.75
5.15.0-1073.75
ubuntu/linux-intel-iotg<5.15.0-1075.81
5.15.0-1075.81
ubuntu/linux-kvm<5.15.0-1076.81
5.15.0-1076.81
ubuntu/linux-lowlatency<5.15.0-135.146
5.15.0-135.146
ubuntu/linux-lowlatency-hwe-5.19*
ubuntu/linux-lowlatency-hwe-6.2*
ubuntu/linux-lowlatency-hwe-6.5*
ubuntu/linux-lowlatency-hwe-6.8<6.8.0-60.63.1~22.04.1
6.8.0-60.63.1~22.04.1
ubuntu/linux-nvidia<5.15.0-1074.75
5.15.0-1074.75
ubuntu/linux-nvidia-6.2*
ubuntu/linux-nvidia-6.5*
ubuntu/linux-nvidia-6.8<6.8.0-1028.31~22.04.1
6.8.0-1028.31~22.04.1
ubuntu/linux-nvidia-tegra<5.15.0-1033.33
5.15.0-1033.33
ubuntu/linux-nvidia-tegra-igx<5.15.0-1021.21
5.15.0-1021.21
ubuntu/linux-oem-5.17*
ubuntu/linux-oem-6.0*
ubuntu/linux-oem-6.1*
ubuntu/linux-oem-6.5*
ubuntu/linux-oracle<5.15.0-1077.83
5.15.0-1077.83
ubuntu/linux-oracle-6.5*
ubuntu/linux-oracle-6.8<6.8.0-1026.27~22.04.1
6.8.0-1026.27~22.04.1
ubuntu/linux-raspi<5.15.0-1074.77
5.15.0-1074.77
ubuntu/linux-realtime*
ubuntu/linux-riscv*
ubuntu/linux-riscv-5.19*
ubuntu/linux-riscv-6.5*
ubuntu/linux-riscv-6.8<6.8.0-62.65~22.04.1
6.8.0-62.65~22.04.1
ubuntu/linux-starfive-5.19*
ubuntu/linux-starfive-6.2*
ubuntu/linux-starfive-6.5*
ubuntu/linux-xilinx-zynqmp<5.15.0-1044.48
5.15.0-1044.48
ubuntu/linux-bluefield<5.15.0-1062.64
5.15.0-1062.64
ubuntu/linux-realtime<5.15.0-1080.88
5.15.0-1080.88
ubuntu/linux-realtime-6.8<6.8.1-1022.23~22.04.1
6.8.1-1022.23~22.04.1
ubuntu/linux-aws-fips*
ubuntu/linux-azure-fips*
ubuntu/linux-fips*
ubuntu/linux-gcp-fips*
ubuntu/linux-aws-fips<5.15.0-1080.87+fips1
5.15.0-1080.87+fips1
ubuntu/linux-azure-fips<5.15.0-1083.92+fips1
5.15.0-1083.92+fips1
ubuntu/linux-fips<5.15.0-135.146+fips1
5.15.0-135.146+fips1
ubuntu/linux-gcp-fips<5.15.0-1079.88+fips1
5.15.0-1079.88+fips1
ubuntu/linux<6.8.0-60.63
6.8.0-60.63
ubuntu/linux-aws<6.8.0-1029.31
6.8.0-1029.31
ubuntu/linux-azure<6.8.0-1029.34
6.8.0-1029.34
ubuntu/linux-azure-6.11<6.11.0-1012.12~24.04.1
6.11.0-1012.12~24.04.1
ubuntu/linux-azure-nvidia<6.8.0-1016.17
6.8.0-1016.17
ubuntu/linux-gcp<6.8.0-1030.32
6.8.0-1030.32
ubuntu/linux-gcp-6.11<6.11.0-1011.11~24.04.1
6.11.0-1011.11~24.04.1
ubuntu/linux-gke<6.8.0-1025.29
6.8.0-1025.29
ubuntu/linux-gkeop<6.8.0-1012.14
6.8.0-1012.14
ubuntu/linux-hwe-6.11<6.11.0-21.21~24.04.1
6.11.0-21.21~24.04.1
ubuntu/linux-ibm<6.8.0-1026.26
6.8.0-1026.26
ubuntu/linux-lowlatency<6.8.0-60.63.1
6.8.0-60.63.1
ubuntu/linux-nvidia<6.8.0-1028.31
6.8.0-1028.31
ubuntu/linux-nvidia-6.11<6.11.0-1007.7
6.11.0-1007.7
ubuntu/linux-nvidia-lowlatency<6.8.0-1028.31.1
6.8.0-1028.31.1
ubuntu/linux-nvidia-tegra<6.8.0-1008.8
6.8.0-1008.8
ubuntu/linux-oem-6.11<6.11.0-1017.17
6.11.0-1017.17
ubuntu/linux-oem-6.8<6.8.0-1028.28
6.8.0-1028.28
ubuntu/linux-oracle<6.8.0-1026.27
6.8.0-1026.27
ubuntu/linux-raspi<6.8.0-1028.32
6.8.0-1028.32
ubuntu/linux-raspi-realtime*
ubuntu/linux-realtime*
ubuntu/linux-riscv<6.8.0-60.63.1
6.8.0-60.63.1
ubuntu/linux-xilinx<6.8.0-1017.18
6.8.0-1017.18
ubuntu/linux-raspi-realtime<6.8.0-2023.24
6.8.0-2023.24
ubuntu/linux-realtime<6.8.1-1022.23
6.8.1-1022.23
ubuntu/linux-fips<6.8.0-78.78+fips1
6.8.0-78.78+fips1
ubuntu/linux-vmware*

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 5.15.176.3-1
  2. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 6.6.76.1-1
  3. Upgrade

    Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.

    Fixed in 4.4.0-1143.149
  4. Upgrade

    Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.

    Fixed in 4.15.0-1188.203~14.04.1
  5. Upgrade

    Upgrade ubuntu/linux-lts-xenial to a version that resolves this vulnerability.

    Fixed in 4.4.0-268.302~14.04.1
  6. Upgrade

    Upgrade ubuntu/linux to a version that resolves this vulnerability.

    Fixed in 4.4.0-268.302
  7. Upgrade

    Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.

    Fixed in 4.4.0-1181.196
  8. Upgrade

    Upgrade ubuntu/linux-aws-hwe to a version that resolves this vulnerability.

    Fixed in 4.15.0-1180.193~16.04.1
  9. Upgrade

    Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.

    Fixed in 4.15.0-1188.203~16.04.1
  10. Upgrade

    Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.

    Fixed in 4.15.0-1173.190~16.04.1
  11. Upgrade

    Upgrade ubuntu/linux-hwe to a version that resolves this vulnerability.

    Fixed in 4.15.0-237.249~16.04.1
  12. Upgrade

    Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.

    Fixed in 4.4.0-1144.155
  13. Upgrade

    Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.

    Fixed in 4.15.0-1142.153~16.04.1
  14. Upgrade

    Upgrade ubuntu/linux-fips to a version that resolves this vulnerability.

    Fixed in 4.4.0-1113.120
  15. Upgrade

    Upgrade ubuntu/linux to a version that resolves this vulnerability.

    Fixed in 4.15.0-237.249
  16. Upgrade

    Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.

    Fixed in 4.15.0-1180.193
  17. Upgrade

    Upgrade ubuntu/linux-aws-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0-1142.152~18.04.1
  18. Upgrade

    Upgrade ubuntu/linux-azure-4.15 to a version that resolves this vulnerability.

    Fixed in 4.15.0-1188.203
  19. Upgrade

    Upgrade ubuntu/linux-azure-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0-1147.154~18.04.1
  20. Upgrade

    Upgrade ubuntu/linux-gcp-4.15 to a version that resolves this vulnerability.

    Fixed in 4.15.0-1173.190
  21. Upgrade

    Upgrade ubuntu/linux-gcp-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0-1145.154~18.04.1
  22. Upgrade

    Upgrade ubuntu/linux-hwe-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0-211.231~18.04.1
  23. Upgrade

    Upgrade ubuntu/linux-ibm-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0-1090.95~18.04.1
  24. Upgrade

    Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.

    Fixed in 4.15.0-1163.168
  25. Upgrade

    Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.

    Fixed in 4.15.0-1142.153
  26. Upgrade

    Upgrade ubuntu/linux-oracle-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0-1140.149~18.04.1
  27. Upgrade

    Upgrade ubuntu/linux-raspi-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0-1129.142~18.04.1
  28. Upgrade

    Upgrade ubuntu/linux-aws-fips to a version that resolves this vulnerability.

    Fixed in 4.15.0-2118.124
  29. Upgrade

    Upgrade ubuntu/linux-azure-fips to a version that resolves this vulnerability.

    Fixed in 4.15.0-2097.103
  30. Upgrade

    Upgrade ubuntu/linux-fips to a version that resolves this vulnerability.

    Fixed in 4.15.0-1135.146
  31. Upgrade

    Upgrade ubuntu/linux-gcp-fips to a version that resolves this vulnerability.

    Fixed in 4.15.0-2081.87
  32. Upgrade

    Upgrade ubuntu/linux to a version that resolves this vulnerability.

    Fixed in 5.4.0-211.231
  33. Upgrade

    Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.

    Fixed in 5.4.0-1142.152
  34. Upgrade

    Upgrade ubuntu/linux-aws-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1080.87~20.04.1
  35. Upgrade

    Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.

    Fixed in 5.4.0-1147.154
  36. Upgrade

    Upgrade ubuntu/linux-azure-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1086.95~20.04.1
  37. Upgrade

    Upgrade ubuntu/linux-bluefield to a version that resolves this vulnerability.

    Fixed in 5.4.0-1101.108
  38. Upgrade

    Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.

    Fixed in 5.4.0-1145.154
  39. Upgrade

    Upgrade ubuntu/linux-gcp-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1081.90~20.04.1
  40. Upgrade

    Upgrade ubuntu/linux-hwe-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-136.147~20.04.1
  41. Upgrade

    Upgrade ubuntu/linux-ibm to a version that resolves this vulnerability.

    Fixed in 5.4.0-1088.93
  42. Upgrade

    Upgrade ubuntu/linux-ibm-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1074.77~20.04.1
  43. Upgrade

    Upgrade ubuntu/linux-intel-iotg-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1077.83~20.04.1
  44. Upgrade

    Upgrade ubuntu/linux-iot to a version that resolves this vulnerability.

    Fixed in 5.4.0-1048.51
  45. Upgrade

    Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.

    Fixed in 5.4.0-1129.138
  46. Upgrade

    Upgrade ubuntu/linux-lowlatency-hwe-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-135.146~20.04.1
  47. Upgrade

    Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.

    Fixed in 5.4.0-1140.150
  48. Upgrade

    Upgrade ubuntu/linux-oracle-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1077.83~20.04.1
  49. Upgrade

    Upgrade ubuntu/linux-raspi to a version that resolves this vulnerability.

    Fixed in 5.4.0-1129.142
  50. Upgrade

    Upgrade ubuntu/linux-riscv-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1075.79~20.04.1
  51. Upgrade

    Upgrade ubuntu/linux-xilinx-zynqmp to a version that resolves this vulnerability.

    Fixed in 5.4.0-1060.64
  52. Upgrade

    Upgrade ubuntu/linux-nvidia-tegra-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1039.39~20.04.1
  53. Upgrade

    Upgrade ubuntu/linux-aws-fips to a version that resolves this vulnerability.

    Fixed in 5.4.0-1142.153+fips1
  54. Upgrade

    Upgrade ubuntu/linux-azure-fips to a version that resolves this vulnerability.

    Fixed in 5.4.0-1147.154+fips1
  55. Upgrade

    Upgrade ubuntu/linux-fips to a version that resolves this vulnerability.

    Fixed in 5.4.0-1116.126
  56. Upgrade

    Upgrade ubuntu/linux-gcp-fips to a version that resolves this vulnerability.

    Fixed in 5.4.0-1145.154+fips1
  57. Upgrade

    Upgrade ubuntu/linux to a version that resolves this vulnerability.

    Fixed in 5.15.0-135.146
  58. Upgrade

    Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.

    Fixed in 5.15.0-1080.87
  59. Upgrade

    Upgrade ubuntu/linux-aws-6.8 to a version that resolves this vulnerability.

    Fixed in 6.8.0-1029.31~22.04.1
  60. Upgrade

    Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.

    Fixed in 5.15.0-1084.93
  61. Upgrade

    Upgrade ubuntu/linux-azure-6.8 to a version that resolves this vulnerability.

    Fixed in 6.8.0-1029.34~22.04.1
  62. Upgrade

    Upgrade ubuntu/linux-azure-fde to a version that resolves this vulnerability.

    Fixed in 5.15.0-1084.93.1
  63. Upgrade

    Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.

    Fixed in 5.15.0-1079.88
  64. Upgrade

    Upgrade ubuntu/linux-gcp-6.8 to a version that resolves this vulnerability.

    Fixed in 6.8.0-1030.32~22.04.1
  65. Upgrade

    Upgrade ubuntu/linux-gke to a version that resolves this vulnerability.

    Fixed in 5.15.0-1077.83
  66. Upgrade

    Upgrade ubuntu/linux-gkeop to a version that resolves this vulnerability.

    Fixed in 5.15.0-1062.70
  67. Upgrade

    Upgrade ubuntu/linux-hwe-6.8 to a version that resolves this vulnerability.

    Fixed in 6.8.0-60.63~22.04.1
  68. Upgrade

    Upgrade ubuntu/linux-ibm to a version that resolves this vulnerability.

    Fixed in 5.15.0-1072.75
  69. Upgrade

    Upgrade ubuntu/linux-ibm-6.8 to a version that resolves this vulnerability.

    Fixed in 6.8.0-1026.26~22.04.1
  70. Upgrade

    Upgrade ubuntu/linux-intel-iot-realtime to a version that resolves this vulnerability.

    Fixed in 5.15.0-1073.75
  71. Upgrade

    Upgrade ubuntu/linux-intel-iotg to a version that resolves this vulnerability.

    Fixed in 5.15.0-1075.81
  72. Upgrade

    Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.

    Fixed in 5.15.0-1076.81
  73. Upgrade

    Upgrade ubuntu/linux-lowlatency to a version that resolves this vulnerability.

    Fixed in 5.15.0-135.146
  74. Upgrade

    Upgrade ubuntu/linux-lowlatency-hwe-6.8 to a version that resolves this vulnerability.

    Fixed in 6.8.0-60.63.1~22.04.1
  75. Upgrade

    Upgrade ubuntu/linux-nvidia to a version that resolves this vulnerability.

    Fixed in 5.15.0-1074.75
  76. Upgrade

    Upgrade ubuntu/linux-nvidia-6.8 to a version that resolves this vulnerability.

    Fixed in 6.8.0-1028.31~22.04.1
  77. Upgrade

    Upgrade ubuntu/linux-nvidia-tegra to a version that resolves this vulnerability.

    Fixed in 5.15.0-1033.33
  78. Upgrade

    Upgrade ubuntu/linux-nvidia-tegra-igx to a version that resolves this vulnerability.

    Fixed in 5.15.0-1021.21
  79. Upgrade

    Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.

    Fixed in 5.15.0-1077.83
  80. Upgrade

    Upgrade ubuntu/linux-oracle-6.8 to a version that resolves this vulnerability.

    Fixed in 6.8.0-1026.27~22.04.1
  81. Upgrade

    Upgrade ubuntu/linux-raspi to a version that resolves this vulnerability.

    Fixed in 5.15.0-1074.77
  82. Upgrade

    Upgrade ubuntu/linux-riscv-6.8 to a version that resolves this vulnerability.

    Fixed in 6.8.0-62.65~22.04.1
  83. Upgrade

    Upgrade ubuntu/linux-xilinx-zynqmp to a version that resolves this vulnerability.

    Fixed in 5.15.0-1044.48
  84. Upgrade

    Upgrade ubuntu/linux-bluefield to a version that resolves this vulnerability.

    Fixed in 5.15.0-1062.64
  85. Upgrade

    Upgrade ubuntu/linux-realtime to a version that resolves this vulnerability.

    Fixed in 5.15.0-1080.88
  86. Upgrade

    Upgrade ubuntu/linux-realtime-6.8 to a version that resolves this vulnerability.

    Fixed in 6.8.1-1022.23~22.04.1
  87. Upgrade

    Upgrade ubuntu/linux-aws-fips to a version that resolves this vulnerability.

    Fixed in 5.15.0-1080.87+fips1
  88. Upgrade

    Upgrade ubuntu/linux-azure-fips to a version that resolves this vulnerability.

    Fixed in 5.15.0-1083.92+fips1
  89. Upgrade

    Upgrade ubuntu/linux-fips to a version that resolves this vulnerability.

    Fixed in 5.15.0-135.146+fips1
  90. Upgrade

    Upgrade ubuntu/linux-gcp-fips to a version that resolves this vulnerability.

    Fixed in 5.15.0-1079.88+fips1
  91. Upgrade

    Upgrade ubuntu/linux to a version that resolves this vulnerability.

    Fixed in 6.8.0-60.63
  92. Upgrade

    Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.

    Fixed in 6.8.0-1029.31
  93. Upgrade

    Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.

    Fixed in 6.8.0-1029.34
  94. Upgrade

    Upgrade ubuntu/linux-azure-6.11 to a version that resolves this vulnerability.

    Fixed in 6.11.0-1012.12~24.04.1
  95. Upgrade

    Upgrade ubuntu/linux-azure-nvidia to a version that resolves this vulnerability.

    Fixed in 6.8.0-1016.17
  96. Upgrade

    Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.

    Fixed in 6.8.0-1030.32
  97. Upgrade

    Upgrade ubuntu/linux-gcp-6.11 to a version that resolves this vulnerability.

    Fixed in 6.11.0-1011.11~24.04.1
  98. Upgrade

    Upgrade ubuntu/linux-gke to a version that resolves this vulnerability.

    Fixed in 6.8.0-1025.29
  99. Upgrade

    Upgrade ubuntu/linux-gkeop to a version that resolves this vulnerability.

    Fixed in 6.8.0-1012.14
  100. Upgrade

    Upgrade ubuntu/linux-hwe-6.11 to a version that resolves this vulnerability.

    Fixed in 6.11.0-21.21~24.04.1
  101. Upgrade

    Upgrade ubuntu/linux-ibm to a version that resolves this vulnerability.

    Fixed in 6.8.0-1026.26
  102. Upgrade

    Upgrade ubuntu/linux-lowlatency to a version that resolves this vulnerability.

    Fixed in 6.8.0-60.63.1
  103. Upgrade

    Upgrade ubuntu/linux-nvidia to a version that resolves this vulnerability.

    Fixed in 6.8.0-1028.31
  104. Upgrade

    Upgrade ubuntu/linux-nvidia-6.11 to a version that resolves this vulnerability.

    Fixed in 6.11.0-1007.7
  105. Upgrade

    Upgrade ubuntu/linux-nvidia-lowlatency to a version that resolves this vulnerability.

    Fixed in 6.8.0-1028.31.1
  106. Upgrade

    Upgrade ubuntu/linux-nvidia-tegra to a version that resolves this vulnerability.

    Fixed in 6.8.0-1008.8
  107. Upgrade

    Upgrade ubuntu/linux-oem-6.11 to a version that resolves this vulnerability.

    Fixed in 6.11.0-1017.17
  108. Upgrade

    Upgrade ubuntu/linux-oem-6.8 to a version that resolves this vulnerability.

    Fixed in 6.8.0-1028.28
  109. Upgrade

    Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.

    Fixed in 6.8.0-1026.27
  110. Upgrade

    Upgrade ubuntu/linux-raspi to a version that resolves this vulnerability.

    Fixed in 6.8.0-1028.32
  111. Upgrade

    Upgrade ubuntu/linux-riscv to a version that resolves this vulnerability.

    Fixed in 6.8.0-60.63.1
  112. Upgrade

    Upgrade ubuntu/linux-xilinx to a version that resolves this vulnerability.

    Fixed in 6.8.0-1017.18
  113. Upgrade

    Upgrade ubuntu/linux-raspi-realtime to a version that resolves this vulnerability.

    Fixed in 6.8.0-2023.24
  114. Upgrade

    Upgrade ubuntu/linux-realtime to a version that resolves this vulnerability.

    Fixed in 6.8.1-1022.23
  115. Upgrade

    Upgrade ubuntu/linux-fips to a version that resolves this vulnerability.

    Fixed in 6.8.0-78.78+fips1
  116. Upgrade

    Upgrade debian/linux to a version that resolves this vulnerability.

    Fixed in 6.1.123-1
  117. Upgrade

    Upgrade debian/linux to a version that resolves this vulnerability.

    Fixed in 6.12.6-1
  118. Upgrade

    Upgrade debian/linux to a version that resolves this vulnerability.

    Fixed in 6.1.176-1Fixed in 6.1.190-1Fixed in 6.12.107-1Fixed in 6.12.115-2Fixed in 7.2.12-1Fixed in 7.2.15-1

Event History

Jan 8, 2025
CVE Published
via MITRE·04:36 PM
Data Sourced
via MITRE·04:36 PM
Description
Data Sourced
via OSV·05:15 PM
DescriptionSeverityAffected Software
Data Sourced
via NVD·05:15 PM
RemedyDescriptionSeverityAffected Software
Mar 8, 2025
Data Sourced
via Microsoft·08:00 AM
DescriptionSeverityWeakness
Data Sourced
via Microsoft·08:00 AM
Affected Software

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What is the severity of CVE-2024-56770?

The severity of CVE-2024-56770 has been categorized as moderate.

2

How do I fix CVE-2024-56770?

To fix CVE-2024-56770, update your Linux kernel to a version that is above the vulnerable versions listed in the advisory.

3

What versions of the Linux kernel are affected by CVE-2024-56770?

CVE-2024-56770 affects multiple versions of the Linux kernel from version 3.3 up to version 6.12.6, as well as specific release candidates.

4

What is the nature of the vulnerability described in CVE-2024-56770?

CVE-2024-56770 is a vulnerability related to backlog updates in the netem module of the Linux kernel affecting classful qdiscs.

5

Is CVE-2024-56770 applicable to all Linux distributions?

CVE-2024-56770 applies to any Linux distribution that runs the affected versions of the Linux kernel.

Company

Resources

Contact

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