UBUNTU-CVE-2025-38083: Race Condition

Q: Who is exposed to this issue?

Systems running the listed Ubuntu kernel packages are in scope, including linux, linux-fips, linux-azure, linux-gcp, linux-aws-fips, linux-azure-fips, linux-gcp-fips, and linux-realtime. Exploitation requires local access rather than network-only access.

Q: What level of access does an attacker need?

The severity vector indicates that an attacker needs low privileges and local access. Exploitation also has high attack complexity and requires additional preconditions.

Q: What is the potential impact of successful exploitation?

The race can be abused to underflow a parent queue discipline's queue length. The supplied severity vector rates the potential impact on confidentiality, integrity, and availability as high.

Q: How can I determine whether a system may be affected?

Identify whether the system is running one of the listed Ubuntu kernel package families and consult the Ubuntu CVE record for its fix status. The provided data does not include fixed package versions.

Published Jun 20, 2025

Updated

In the Linux kernel, the following vulnerability has been resolved: netsched: prio: fix a race in priotune() Gerrard Tai reported a race condition in PRIO, whenever SFQ perturb timer fires at the wrong time. The race is as follows: CPU 0 CPU 1 [1]: lock root [2]: qdisctreeflushbacklog() [3]: unlock root | | [5]: lock root | [6]: rehash | [7]: qdisctreereducebacklog() | [4]: qdiscput() This can be abused to underflow a parent's qlen. Calling qdiscpurgequeue() instead of qdisctreeflushbacklog() should fix the race, because all packets will be purged from the qdisc before releasing the lock.

Affected Software

187 affected componentsFixes available

ubuntu/linux-hwe-edge*

ubuntu/linux-aws-5.0*

ubuntu/linux-aws-5.3*

ubuntu/linux-aws-5.4<5.4.0-1149.159~18.04.1

5.4.0-1149.159~18.04.1

ubuntu/linux-azure*

ubuntu/linux-azure-5.3*

ubuntu/linux-azure-5.4<5.4.0-1154.161~18.04.1

5.4.0-1154.161~18.04.1

ubuntu/linux-azure-edge*

ubuntu/linux-gcp*

ubuntu/linux-gcp-5.3*

ubuntu/linux-gcp-5.4<5.4.0-1152.161~18.04.1

5.4.0-1152.161~18.04.1

ubuntu/linux-gke-4.15*

ubuntu/linux-gke-5.4*

ubuntu/linux-gkeop-5.4*

ubuntu/linux-hwe*

ubuntu/linux-hwe-5.4<5.4.0-220.240~18.04.1

5.4.0-220.240~18.04.1

ubuntu/linux-hwe-edge*

ubuntu/linux-ibm-5.4<5.4.0-1095.100~18.04.1

5.4.0-1095.100~18.04.1

ubuntu/linux-oem*

ubuntu/linux-oracle-5.0*

ubuntu/linux-oracle-5.3*

ubuntu/linux-oracle-5.4<5.4.0-1148.158~18.04.1

5.4.0-1148.158~18.04.1

ubuntu/linux-raspi-5.4<5.4.0-1132.145~18.04.1

5.4.0-1132.145~18.04.1

ubuntu/linux<5.4.0-220.240

5.4.0-220.240

ubuntu/linux-aws<5.4.0-1149.159

5.4.0-1149.159

ubuntu/linux-aws-5.11*

ubuntu/linux-aws-5.13*

ubuntu/linux-aws-5.15<5.15.0-1089.96~20.04.1

5.15.0-1089.96~20.04.1

ubuntu/linux-aws-5.8*

ubuntu/linux-azure<5.4.0-1154.161

5.4.0-1154.161

ubuntu/linux-azure-5.11*

ubuntu/linux-azure-5.13*

ubuntu/linux-azure-5.15<5.15.0-1094.103~20.04.1

5.15.0-1094.103~20.04.1

ubuntu/linux-azure-5.8*

ubuntu/linux-azure-fde*

ubuntu/linux-bluefield<5.4.0-1108.115

5.4.0-1108.115

ubuntu/linux-gcp<5.4.0-1152.161

5.4.0-1152.161

ubuntu/linux-gcp-5.11*

ubuntu/linux-gcp-5.13*

ubuntu/linux-gcp-5.15<5.15.0-1088.97~20.04.1

5.15.0-1088.97~20.04.1

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-5.15<5.15.0-145.158~20.04.1

5.15.0-145.158~20.04.1

ubuntu/linux-hwe-5.8*

ubuntu/linux-ibm<5.4.0-1095.100

5.4.0-1095.100

ubuntu/linux-ibm-5.15<5.15.0-1081.84~20.04.1

5.15.0-1081.84~20.04.1

ubuntu/linux-intel-5.13*

ubuntu/linux-intel-iotg-5.15<5.15.0-1084.90~20.04.1

5.15.0-1084.90~20.04.1

ubuntu/linux-iot<5.4.0-1053.56

5.4.0-1053.56

ubuntu/linux-kvm<5.4.0-1136.145

5.4.0-1136.145

ubuntu/linux-lowlatency-hwe-5.15<5.15.0-145.158~20.04.1

5.15.0-145.158~20.04.1

ubuntu/linux-nvidia-tegra-5.15<5.15.0-1042.42~20.04.1

5.15.0-1042.42~20.04.1

ubuntu/linux-oem-5.10*

ubuntu/linux-oem-5.13*

ubuntu/linux-oem-5.6*

ubuntu/linux-oracle<5.4.0-1147.157

5.4.0-1147.157

ubuntu/linux-oracle-5.11*

ubuntu/linux-oracle-5.13*

ubuntu/linux-oracle-5.15<5.15.0-1086.92~20.04.1

5.15.0-1086.92~20.04.1

ubuntu/linux-oracle-5.8*

ubuntu/linux-raspi<5.4.0-1132.145

5.4.0-1132.145

ubuntu/linux-raspi2*

ubuntu/linux-riscv*

ubuntu/linux-riscv-5.11*

ubuntu/linux-riscv-5.15<5.15.0-1084.88~20.04.1

5.15.0-1084.88~20.04.1

ubuntu/linux-riscv-5.8*

ubuntu/linux-xilinx-zynqmp<5.4.0-1067.71

5.4.0-1067.71

ubuntu/linux-aws-fips<5.4.0-1149.159+fips1

5.4.0-1149.159+fips1

ubuntu/linux-azure-fips<5.4.0-1155.162+fips1

5.4.0-1155.162+fips1

ubuntu/linux-fips<5.4.0-1123.133

5.4.0-1123.133

ubuntu/linux-gcp-fips<5.4.0-1152.161+fips1

5.4.0-1152.161+fips1

ubuntu/linux-aws-fips*

ubuntu/linux-azure-fips*

ubuntu/linux-fips*

ubuntu/linux-gcp-fips*

ubuntu/linux<5.15.0-151.161

5.15.0-151.161

ubuntu/linux-allwinner-5.19*

ubuntu/linux-aws<5.15.0-1089.96

5.15.0-1089.96

ubuntu/linux-aws-5.19*

ubuntu/linux-aws-6.2*

ubuntu/linux-aws-6.5*

ubuntu/linux-aws-6.8<6.8.0-1033.35~22.04.1

6.8.0-1033.35~22.04.1

ubuntu/linux-azure<5.15.0-1094.103

5.15.0-1094.103

ubuntu/linux-azure-5.19*

ubuntu/linux-azure-6.2*

ubuntu/linux-azure-6.5*

ubuntu/linux-azure-6.8<6.8.0-1034.39~22.04.1

6.8.0-1034.39~22.04.1

ubuntu/linux-azure-fde<5.15.0-1094.103.1

5.15.0-1094.103.1

ubuntu/linux-azure-fde-5.19*

ubuntu/linux-azure-fde-6.2*

ubuntu/linux-gcp<5.15.0-1088.97

5.15.0-1088.97

ubuntu/linux-gcp-5.19*

ubuntu/linux-gcp-6.2*

ubuntu/linux-gcp-6.5*

ubuntu/linux-gcp-6.8<6.8.0-1034.36~22.04.2

6.8.0-1034.36~22.04.2

ubuntu/linux-gke<5.15.0-1086.92

5.15.0-1086.92

ubuntu/linux-gkeop<5.15.0-1071.79

5.15.0-1071.79

ubuntu/linux-hwe-5.19*

ubuntu/linux-hwe-6.2*

ubuntu/linux-hwe-6.5*

ubuntu/linux-hwe-6.8<6.8.0-65.68~22.04.1

6.8.0-65.68~22.04.1

ubuntu/linux-ibm<5.15.0-1081.84

5.15.0-1081.84

ubuntu/linux-ibm-6.8<6.8.0-1030.30~22.04.1

6.8.0-1030.30~22.04.1

ubuntu/linux-intel-iot-realtime*

ubuntu/linux-intel-iotg<5.15.0-1084.90

5.15.0-1084.90

ubuntu/linux-kvm<5.15.0-1085.90

5.15.0-1085.90

ubuntu/linux-lowlatency<5.15.0-145.158

5.15.0-145.158

ubuntu/linux-lowlatency-hwe-5.19*

ubuntu/linux-lowlatency-hwe-6.2*

ubuntu/linux-lowlatency-hwe-6.5*

ubuntu/linux-lowlatency-hwe-6.8<6.8.0-65.68.1~22.04.1

6.8.0-65.68.1~22.04.1

ubuntu/linux-nvidia<5.15.0-1083.84

5.15.0-1083.84

ubuntu/linux-nvidia-6.2*

ubuntu/linux-nvidia-6.5*

ubuntu/linux-nvidia-6.8<6.8.0-1032.35~22.04.1

6.8.0-1032.35~22.04.1

ubuntu/linux-nvidia-tegra<5.15.0-1042.42

5.15.0-1042.42

ubuntu/linux-nvidia-tegra-igx<5.15.0-1031.31

5.15.0-1031.31

ubuntu/linux-oem-5.17*

ubuntu/linux-oem-6.0*

ubuntu/linux-oem-6.1*

ubuntu/linux-oem-6.5*

ubuntu/linux-oracle<5.15.0-1086.92

5.15.0-1086.92

ubuntu/linux-oracle-6.5*

ubuntu/linux-oracle-6.8<6.8.0-1030.31~22.04.1

6.8.0-1030.31~22.04.1

ubuntu/linux-raspi<5.15.0-1083.86

5.15.0-1083.86

ubuntu/linux-realtime*

ubuntu/linux-riscv*

ubuntu/linux-riscv-5.19*

ubuntu/linux-riscv-6.5*

ubuntu/linux-riscv-6.8<6.8.0-71.71~22.04.1

6.8.0-71.71~22.04.1

ubuntu/linux-starfive-5.19*

ubuntu/linux-starfive-6.2*

ubuntu/linux-starfive-6.5*

ubuntu/linux-xilinx-zynqmp<5.15.0-1053.57

5.15.0-1053.57

ubuntu/linux-bluefield<5.15.0-1072.74

5.15.0-1072.74

ubuntu/linux-intel-iot-realtime<5.15.0-1082.84

5.15.0-1082.84

ubuntu/linux-realtime<5.15.0-1089.98

5.15.0-1089.98

ubuntu/linux-realtime-6.8<6.8.1-1026.27~22.04.1

6.8.1-1026.27~22.04.1

ubuntu/linux-aws-fips*

ubuntu/linux-azure-fips*

ubuntu/linux-fips*

ubuntu/linux-gcp-fips*

ubuntu/linux-aws-fips<5.15.0-1089.96+fips1

5.15.0-1089.96+fips1

ubuntu/linux-azure-fips<5.15.0-1094.103+fips1

5.15.0-1094.103+fips1

ubuntu/linux-fips<5.15.0-145.158+fips1

5.15.0-145.158+fips1

ubuntu/linux-gcp-fips<5.15.0-1088.97+fips1

5.15.0-1088.97+fips1

ubuntu/linux<6.8.0-71.71

6.8.0-71.71

ubuntu/linux-aws<6.8.0-1033.35

6.8.0-1033.35

ubuntu/linux-aws-6.14<6.14.0-1010.10~24.04.1

6.14.0-1010.10~24.04.1

ubuntu/linux-azure<6.8.0-1034.39

6.8.0-1034.39

ubuntu/linux-azure-6.11*

ubuntu/linux-azure-nvidia<6.8.0-1022.23

6.8.0-1022.23

ubuntu/linux-gcp<6.8.0-1034.36

6.8.0-1034.36

ubuntu/linux-gcp-6.11*

ubuntu/linux-gcp-6.14<6.14.0-1012.12~24.04.1

6.14.0-1012.12~24.04.1

ubuntu/linux-gke<6.8.0-1029.33

6.8.0-1029.33

ubuntu/linux-gkeop<6.8.0-1016.18

6.8.0-1016.18

ubuntu/linux-hwe-6.11*

ubuntu/linux-ibm<6.8.0-1030.30

6.8.0-1030.30

ubuntu/linux-lowlatency<6.8.0-65.68.1

6.8.0-65.68.1

ubuntu/linux-lowlatency-hwe-6.11*

ubuntu/linux-nvidia<6.8.0-1032.35

6.8.0-1032.35

ubuntu/linux-nvidia-6.11*

ubuntu/linux-nvidia-lowlatency<6.8.0-1032.35.1

6.8.0-1032.35.1

ubuntu/linux-nvidia-tegra<6.8.0-1009.9

6.8.0-1009.9

ubuntu/linux-oem-6.11*

ubuntu/linux-oem-6.14<6.14.0-1008.8

6.14.0-1008.8

ubuntu/linux-oem-6.8<6.8.0-1032.32

6.8.0-1032.32

ubuntu/linux-oracle<6.8.0-1030.31

6.8.0-1030.31

ubuntu/linux-oracle-6.14<6.14.0-1010.10~24.04.1

6.14.0-1010.10~24.04.1

ubuntu/linux-raspi<6.8.0-1032.36

6.8.0-1032.36

ubuntu/linux-raspi-realtime*

ubuntu/linux-realtime*

ubuntu/linux-riscv*

ubuntu/linux-riscv-6.14<6.14.0-27.27.1~24.04.1

6.14.0-27.27.1~24.04.1

ubuntu/linux-xilinx<6.8.0-1017.18

6.8.0-1017.18

ubuntu/linux-raspi-realtime<6.8.0-2028.29

6.8.0-2028.29

ubuntu/linux-realtime<6.8.1-1026.27

6.8.1-1026.27

ubuntu/linux-realtime-6.14<6.14.0-1010.10~24.04.1

6.14.0-1010.10~24.04.1

ubuntu/linux-fips<6.8.0-78.78+fips1

6.8.0-78.78+fips1

ubuntu/linux-azure-fde*

ubuntu/linux-vmware*

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
Upgrade ubuntu/linux-aws-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1149.159~18.04.1
Upgrade
Upgrade ubuntu/linux-azure-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1154.161~18.04.1
Upgrade
Upgrade ubuntu/linux-gcp-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1152.161~18.04.1
Upgrade
Upgrade ubuntu/linux-hwe-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-220.240~18.04.1
Upgrade
Upgrade ubuntu/linux-ibm-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1095.100~18.04.1
Upgrade
Upgrade ubuntu/linux-oracle-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1148.158~18.04.1
Upgrade
Upgrade ubuntu/linux-raspi-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1132.145~18.04.1
Upgrade
Upgrade ubuntu/linux to a version that resolves this vulnerability.
Fixed in 5.4.0-220.240
Upgrade
Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.
Fixed in 5.4.0-1149.159
Upgrade
Upgrade ubuntu/linux-aws-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1089.96~20.04.1
Upgrade
Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.
Fixed in 5.4.0-1154.161
Upgrade
Upgrade ubuntu/linux-azure-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1094.103~20.04.1
Upgrade
Upgrade ubuntu/linux-bluefield to a version that resolves this vulnerability.
Fixed in 5.4.0-1108.115
Upgrade
Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.
Fixed in 5.4.0-1152.161
Upgrade
Upgrade ubuntu/linux-gcp-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1088.97~20.04.1
Upgrade
Upgrade ubuntu/linux-hwe-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-145.158~20.04.1
Upgrade
Upgrade ubuntu/linux-ibm to a version that resolves this vulnerability.
Fixed in 5.4.0-1095.100
Upgrade
Upgrade ubuntu/linux-ibm-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1081.84~20.04.1
Upgrade
Upgrade ubuntu/linux-intel-iotg-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1084.90~20.04.1
Upgrade
Upgrade ubuntu/linux-iot to a version that resolves this vulnerability.
Fixed in 5.4.0-1053.56
Upgrade
Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.
Fixed in 5.4.0-1136.145
Upgrade
Upgrade ubuntu/linux-lowlatency-hwe-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-145.158~20.04.1
Upgrade
Upgrade ubuntu/linux-nvidia-tegra-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1042.42~20.04.1
Upgrade
Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.
Fixed in 5.4.0-1147.157
Upgrade
Upgrade ubuntu/linux-oracle-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1086.92~20.04.1
Upgrade
Upgrade ubuntu/linux-raspi to a version that resolves this vulnerability.
Fixed in 5.4.0-1132.145
Upgrade
Upgrade ubuntu/linux-riscv-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1084.88~20.04.1
Upgrade
Upgrade ubuntu/linux-xilinx-zynqmp to a version that resolves this vulnerability.
Fixed in 5.4.0-1067.71
Upgrade
Upgrade ubuntu/linux-aws-fips to a version that resolves this vulnerability.
Fixed in 5.4.0-1149.159+fips1
Upgrade
Upgrade ubuntu/linux-azure-fips to a version that resolves this vulnerability.
Fixed in 5.4.0-1155.162+fips1
Upgrade
Upgrade ubuntu/linux-fips to a version that resolves this vulnerability.
Fixed in 5.4.0-1123.133
Upgrade
Upgrade ubuntu/linux-gcp-fips to a version that resolves this vulnerability.
Fixed in 5.4.0-1152.161+fips1
Upgrade
Upgrade ubuntu/linux to a version that resolves this vulnerability.
Fixed in 5.15.0-151.161
Upgrade
Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.
Fixed in 5.15.0-1089.96
Upgrade
Upgrade ubuntu/linux-aws-6.8 to a version that resolves this vulnerability.
Fixed in 6.8.0-1033.35~22.04.1
Upgrade
Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.
Fixed in 5.15.0-1094.103
Upgrade
Upgrade ubuntu/linux-azure-6.8 to a version that resolves this vulnerability.
Fixed in 6.8.0-1034.39~22.04.1
Upgrade
Upgrade ubuntu/linux-azure-fde to a version that resolves this vulnerability.
Fixed in 5.15.0-1094.103.1
Upgrade
Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.
Fixed in 5.15.0-1088.97
Upgrade
Upgrade ubuntu/linux-gcp-6.8 to a version that resolves this vulnerability.
Fixed in 6.8.0-1034.36~22.04.2
Upgrade
Upgrade ubuntu/linux-gke to a version that resolves this vulnerability.
Fixed in 5.15.0-1086.92
Upgrade
Upgrade ubuntu/linux-gkeop to a version that resolves this vulnerability.
Fixed in 5.15.0-1071.79
Upgrade
Upgrade ubuntu/linux-hwe-6.8 to a version that resolves this vulnerability.
Fixed in 6.8.0-65.68~22.04.1
Upgrade
Upgrade ubuntu/linux-ibm to a version that resolves this vulnerability.
Fixed in 5.15.0-1081.84
Upgrade
Upgrade ubuntu/linux-ibm-6.8 to a version that resolves this vulnerability.
Fixed in 6.8.0-1030.30~22.04.1
Upgrade
Upgrade ubuntu/linux-intel-iotg to a version that resolves this vulnerability.
Fixed in 5.15.0-1084.90
Upgrade
Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.
Fixed in 5.15.0-1085.90
Upgrade
Upgrade ubuntu/linux-lowlatency to a version that resolves this vulnerability.
Fixed in 5.15.0-145.158
Upgrade
Upgrade ubuntu/linux-lowlatency-hwe-6.8 to a version that resolves this vulnerability.
Fixed in 6.8.0-65.68.1~22.04.1
Upgrade
Upgrade ubuntu/linux-nvidia to a version that resolves this vulnerability.
Fixed in 5.15.0-1083.84
Upgrade
Upgrade ubuntu/linux-nvidia-6.8 to a version that resolves this vulnerability.
Fixed in 6.8.0-1032.35~22.04.1
Upgrade
Upgrade ubuntu/linux-nvidia-tegra to a version that resolves this vulnerability.
Fixed in 5.15.0-1042.42
Upgrade
Upgrade ubuntu/linux-nvidia-tegra-igx to a version that resolves this vulnerability.
Fixed in 5.15.0-1031.31
Upgrade
Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.
Fixed in 5.15.0-1086.92
Upgrade
Upgrade ubuntu/linux-oracle-6.8 to a version that resolves this vulnerability.
Fixed in 6.8.0-1030.31~22.04.1
Upgrade
Upgrade ubuntu/linux-raspi to a version that resolves this vulnerability.
Fixed in 5.15.0-1083.86
Upgrade
Upgrade ubuntu/linux-riscv-6.8 to a version that resolves this vulnerability.
Fixed in 6.8.0-71.71~22.04.1
Upgrade
Upgrade ubuntu/linux-xilinx-zynqmp to a version that resolves this vulnerability.
Fixed in 5.15.0-1053.57
Upgrade
Upgrade ubuntu/linux-bluefield to a version that resolves this vulnerability.
Fixed in 5.15.0-1072.74
Upgrade
Upgrade ubuntu/linux-intel-iot-realtime to a version that resolves this vulnerability.
Fixed in 5.15.0-1082.84
Upgrade
Upgrade ubuntu/linux-realtime to a version that resolves this vulnerability.
Fixed in 5.15.0-1089.98
Upgrade
Upgrade ubuntu/linux-realtime-6.8 to a version that resolves this vulnerability.
Fixed in 6.8.1-1026.27~22.04.1
Upgrade
Upgrade ubuntu/linux-aws-fips to a version that resolves this vulnerability.
Fixed in 5.15.0-1089.96+fips1
Upgrade
Upgrade ubuntu/linux-azure-fips to a version that resolves this vulnerability.
Fixed in 5.15.0-1094.103+fips1
Upgrade
Upgrade ubuntu/linux-fips to a version that resolves this vulnerability.
Fixed in 5.15.0-145.158+fips1
Upgrade
Upgrade ubuntu/linux-gcp-fips to a version that resolves this vulnerability.
Fixed in 5.15.0-1088.97+fips1
Upgrade
Upgrade ubuntu/linux to a version that resolves this vulnerability.
Fixed in 6.8.0-71.71
Upgrade
Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.
Fixed in 6.8.0-1033.35
Upgrade
Upgrade ubuntu/linux-aws-6.14 to a version that resolves this vulnerability.
Fixed in 6.14.0-1010.10~24.04.1
Upgrade
Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.
Fixed in 6.8.0-1034.39
Upgrade
Upgrade ubuntu/linux-azure-nvidia to a version that resolves this vulnerability.
Fixed in 6.8.0-1022.23
Upgrade
Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.
Fixed in 6.8.0-1034.36
Upgrade
Upgrade ubuntu/linux-gcp-6.14 to a version that resolves this vulnerability.
Fixed in 6.14.0-1012.12~24.04.1
Upgrade
Upgrade ubuntu/linux-gke to a version that resolves this vulnerability.
Fixed in 6.8.0-1029.33
Upgrade
Upgrade ubuntu/linux-gkeop to a version that resolves this vulnerability.
Fixed in 6.8.0-1016.18
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Upgrade ubuntu/linux-ibm to a version that resolves this vulnerability.
Fixed in 6.8.0-1030.30
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Upgrade ubuntu/linux-lowlatency to a version that resolves this vulnerability.
Fixed in 6.8.0-65.68.1
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Upgrade ubuntu/linux-nvidia to a version that resolves this vulnerability.
Fixed in 6.8.0-1032.35
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Upgrade ubuntu/linux-nvidia-lowlatency to a version that resolves this vulnerability.
Fixed in 6.8.0-1032.35.1
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Upgrade ubuntu/linux-nvidia-tegra to a version that resolves this vulnerability.
Fixed in 6.8.0-1009.9
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Upgrade ubuntu/linux-oem-6.14 to a version that resolves this vulnerability.
Fixed in 6.14.0-1008.8
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Upgrade ubuntu/linux-oem-6.8 to a version that resolves this vulnerability.
Fixed in 6.8.0-1032.32
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Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.
Fixed in 6.8.0-1030.31
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Upgrade ubuntu/linux-oracle-6.14 to a version that resolves this vulnerability.
Fixed in 6.14.0-1010.10~24.04.1
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Upgrade ubuntu/linux-raspi to a version that resolves this vulnerability.
Fixed in 6.8.0-1032.36
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Upgrade ubuntu/linux-riscv-6.14 to a version that resolves this vulnerability.
Fixed in 6.14.0-27.27.1~24.04.1
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Upgrade ubuntu/linux-xilinx to a version that resolves this vulnerability.
Fixed in 6.8.0-1017.18
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Upgrade ubuntu/linux-raspi-realtime to a version that resolves this vulnerability.
Fixed in 6.8.0-2028.29
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Upgrade ubuntu/linux-realtime to a version that resolves this vulnerability.
Fixed in 6.8.1-1026.27
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Upgrade ubuntu/linux-realtime-6.14 to a version that resolves this vulnerability.
Fixed in 6.14.0-1010.10~24.04.1
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Upgrade ubuntu/linux-fips to a version that resolves this vulnerability.
Fixed in 6.8.0-78.78+fips1
Configuration
Call qdisc_purge_queue() instead of qdisc_tree_flush_backlog() so all packets are purged from the qdisc before releasing the lock.
Linux kernel net_sched PRIO qdisc backlog flush function = qdisc_purge_queue()

Event History

Jun 20, 2025

CVE Published

via OSV·12:15 PM

Data Sourced

via OSV·12:15 PM

DescriptionSeverityAffected Software

Frequently Asked Questions

Who is exposed to this issue?

Systems running the listed Ubuntu kernel packages are in scope, including linux, linux-fips, linux-azure, linux-gcp, linux-aws-fips, linux-azure-fips, linux-gcp-fips, and linux-realtime. Exploitation requires local access rather than network-only access.

What level of access does an attacker need?

The severity vector indicates that an attacker needs low privileges and local access. Exploitation also has high attack complexity and requires additional preconditions.

What is the potential impact of successful exploitation?

The race can be abused to underflow a parent queue discipline's queue length. The supplied severity vector rates the potential impact on confidentiality, integrity, and availability as high.

How can I determine whether a system may be affected?

Identify whether the system is running one of the listed Ubuntu kernel package families and consult the Ubuntu CVE record for its fix status. The provided data does not include fixed package versions.

UBUNTU-CVE-2025-38083: Race Condition

Affected Software

Remediation

Event History

Frequently Asked Questions

Who is exposed to this issue?

What level of access does an attacker need?

What is the potential impact of successful exploitation?

How can I determine whether a system may be affected?

Company

Resources

Contact

Frequently Asked Questions

Who is exposed to this issue?

What level of access does an attacker need?

What is the potential impact of successful exploitation?

How can I determine whether a system may be affected?