CVE-2025-37932: sch_htb: make htb_qlen_notify() idempotent

Published May 20, 2025
·
Updated

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

schhtb: make htbqlennotify() idempotent

htbqlennotify() always deactivates the HTB class and in fact could trigger a warning if it is already deactivated. Therefore, it is not idempotent and not friendly to its callers, like fqcodeldequeue().

Let's make it idempotent to ease qdisctreereducebacklog() callers' life.

Affected Software

220 affected componentsFixes available
Linux Linux kernel
Linux Linux kernel<5.4.294
Linux Linux kernel>=5.5<5.10.241
Linux Linux kernel>=5.11<5.15.190
Linux Linux kernel>=5.16<6.1.138
Linux Linux kernel>=6.2<6.6.90
Linux Linux kernel>=6.7<6.12.28
Linux Linux kernel>=6.13<6.14.6
Linux Linux kernel=6.15-rc1
Debian Debian Linux=11.0
Microsoft azl3 kernel 6.6.92.2-1
Patch available
Microsoft azl3 kernel 6.6.85.1-4
Patch available
Microsoft cbl2 kernel 5.15.186.1-1
Patch available
debian/linux
6.1.176-16.1.190-16.12.107-16.12.115-27.2.12-17.2.15-1
ubuntu/linux-azure<4.15.0-1190.205~14.04.1
4.15.0-1190.205~14.04.1
ubuntu/linux-aws-hwe<4.15.0-1182.195~16.04.1
4.15.0-1182.195~16.04.1
ubuntu/linux-azure<4.15.0-1190.205~16.04.1
4.15.0-1190.205~16.04.1
ubuntu/linux-gcp<4.15.0-1175.192~16.04.1
4.15.0-1175.192~16.04.1
ubuntu/linux-hwe<4.15.0-239.251~16.04.1
4.15.0-239.251~16.04.1
ubuntu/linux-oracle<4.15.0-1144.155~16.04.1
4.15.0-1144.155~16.04.1
ubuntu/linux-hwe-edge*
ubuntu/linux<4.15.0-239.251
4.15.0-239.251
ubuntu/linux-aws<4.15.0-1182.195
4.15.0-1182.195
ubuntu/linux-aws-5.0*
ubuntu/linux-aws-5.3*
ubuntu/linux-aws-5.4<5.4.0-1148.158~18.04.1
5.4.0-1148.158~18.04.1
ubuntu/linux-azure*
ubuntu/linux-azure-4.15<4.15.0-1190.205
4.15.0-1190.205
ubuntu/linux-azure-5.3*
ubuntu/linux-azure-5.4<5.4.0-1153.160~18.04.1
5.4.0-1153.160~18.04.1
ubuntu/linux-azure-edge*
ubuntu/linux-gcp*
ubuntu/linux-gcp-4.15<4.15.0-1175.192
4.15.0-1175.192
ubuntu/linux-gcp-5.3*
ubuntu/linux-gcp-5.4<5.4.0-1151.160~18.04.1
5.4.0-1151.160~18.04.1
ubuntu/linux-gke-4.15*
ubuntu/linux-gke-5.4*
ubuntu/linux-gkeop-5.4*
ubuntu/linux-hwe*
ubuntu/linux-hwe-5.4<5.4.0-219.239~18.04.1
5.4.0-219.239~18.04.1
ubuntu/linux-hwe-edge*
ubuntu/linux-ibm-5.4<5.4.0-1094.99~18.04.1
5.4.0-1094.99~18.04.1
ubuntu/linux-kvm<4.15.0-1165.170
4.15.0-1165.170
ubuntu/linux-oem*
ubuntu/linux-oracle<4.15.0-1144.155
4.15.0-1144.155
ubuntu/linux-oracle-5.0*
ubuntu/linux-oracle-5.3*
ubuntu/linux-oracle-5.4<5.4.0-1146.156~18.04.1
5.4.0-1146.156~18.04.1
ubuntu/linux-raspi-5.4<5.4.0-1131.144~18.04.1
5.4.0-1131.144~18.04.1
ubuntu/linux-aws-fips<4.15.0-2120.126
4.15.0-2120.126
ubuntu/linux-azure-fips<4.15.0-2099.105
4.15.0-2099.105
ubuntu/linux-fips<4.15.0-1137.148
4.15.0-1137.148
ubuntu/linux-gcp-fips<4.15.0-2083.89
4.15.0-2083.89
ubuntu/linux-aws-fips*
ubuntu/linux-azure-fips*
ubuntu/linux-fips*
ubuntu/linux-gcp-fips*
ubuntu/linux<5.4.0-219.239
5.4.0-219.239
ubuntu/linux-aws<5.4.0-1148.158
5.4.0-1148.158
ubuntu/linux-aws-5.11*
ubuntu/linux-aws-5.13*
ubuntu/linux-aws-5.15<5.15.0-1087.94~20.04.1
5.15.0-1087.94~20.04.1
ubuntu/linux-aws-5.8*
ubuntu/linux-azure<5.4.0-1153.160
5.4.0-1153.160
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<5.4.0-1107.114
5.4.0-1107.114
ubuntu/linux-gcp<5.4.0-1151.160
5.4.0-1151.160
ubuntu/linux-gcp-5.11*
ubuntu/linux-gcp-5.13*
ubuntu/linux-gcp-5.15<5.15.0-1086.95~20.04.1
5.15.0-1086.95~20.04.1
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<5.15.0-143.153~20.04.1
5.15.0-143.153~20.04.1
ubuntu/linux-hwe-5.8*
ubuntu/linux-ibm<5.4.0-1094.99
5.4.0-1094.99
ubuntu/linux-ibm-5.15<5.15.0-1079.82~20.04.1
5.15.0-1079.82~20.04.1
ubuntu/linux-intel-5.13*
ubuntu/linux-intel-iotg-5.15<5.15.0-1083.89~20.04.1
5.15.0-1083.89~20.04.1
ubuntu/linux-iot<5.4.0-1052.55
5.4.0-1052.55
ubuntu/linux-kvm<5.4.0-1135.144
5.4.0-1135.144
ubuntu/linux-lowlatency-hwe-5.15<5.15.0-143.153~20.04.1
5.15.0-143.153~20.04.1
ubuntu/linux-nvidia-tegra-5.15<5.15.0-1040.40~20.04.1
5.15.0-1040.40~20.04.1
ubuntu/linux-oem-5.10*
ubuntu/linux-oem-5.13*
ubuntu/linux-oem-5.6*
ubuntu/linux-oracle<5.4.0-1146.156
5.4.0-1146.156
ubuntu/linux-oracle-5.11*
ubuntu/linux-oracle-5.13*
ubuntu/linux-oracle-5.15<5.15.0-1084.90~20.04.1
5.15.0-1084.90~20.04.1
ubuntu/linux-oracle-5.8*
ubuntu/linux-raspi<5.4.0-1131.144
5.4.0-1131.144
ubuntu/linux-raspi2*
ubuntu/linux-riscv*
ubuntu/linux-riscv-5.11*
ubuntu/linux-riscv-5.15<5.15.0-1082.86~20.04.1
5.15.0-1082.86~20.04.1
ubuntu/linux-riscv-5.8*
ubuntu/linux-xilinx-zynqmp<5.4.0-1066.70
5.4.0-1066.70
ubuntu/linux-aws-fips<5.4.0-1148.158+fips1
5.4.0-1148.158+fips1
ubuntu/linux-azure-fips<5.4.0-1154.161+fips1
5.4.0-1154.161+fips1
ubuntu/linux-fips<5.4.0-1122.132
5.4.0-1122.132
ubuntu/linux-gcp-fips<5.4.0-1151.160+fips1
5.4.0-1151.160+fips1
ubuntu/linux-aws-fips*
ubuntu/linux-azure-fips*
ubuntu/linux-fips*
ubuntu/linux-gcp-fips*
ubuntu/linux<5.15.0-143.153
5.15.0-143.153
ubuntu/linux-allwinner-5.19*
ubuntu/linux-aws<5.15.0-1087.94
5.15.0-1087.94
ubuntu/linux-aws-5.19*
ubuntu/linux-aws-6.2*
ubuntu/linux-aws-6.5*
ubuntu/linux-aws-6.8<6.8.0-1031.33~22.04.1
6.8.0-1031.33~22.04.1
ubuntu/linux-azure<5.15.0-1092.101
5.15.0-1092.101
ubuntu/linux-azure-5.19*
ubuntu/linux-azure-6.2*
ubuntu/linux-azure-6.5*
ubuntu/linux-azure-6.8<6.8.0-1031.36~22.04.1
6.8.0-1031.36~22.04.1
ubuntu/linux-azure-fde<5.15.0-1092.101.1
5.15.0-1092.101.1
ubuntu/linux-azure-fde-5.19*
ubuntu/linux-azure-fde-6.2*
ubuntu/linux-gcp<5.15.0-1086.95
5.15.0-1086.95
ubuntu/linux-gcp-5.19*
ubuntu/linux-gcp-6.2*
ubuntu/linux-gcp-6.5*
ubuntu/linux-gcp-6.8<6.8.0-1032.34~22.04.1
6.8.0-1032.34~22.04.1
ubuntu/linux-gke<5.15.0-1084.90
5.15.0-1084.90
ubuntu/linux-gkeop<5.15.0-1069.77
5.15.0-1069.77
ubuntu/linux-hwe-5.19*
ubuntu/linux-hwe-6.2*
ubuntu/linux-hwe-6.5*
ubuntu/linux-hwe-6.8<6.8.0-64.67~22.04.1
6.8.0-64.67~22.04.1
ubuntu/linux-ibm<5.15.0-1079.82
5.15.0-1079.82
ubuntu/linux-ibm-6.8<6.8.0-1028.28~22.04.1
6.8.0-1028.28~22.04.1
ubuntu/linux-intel-iot-realtime*
ubuntu/linux-intel-iotg<5.15.0-1082.88
5.15.0-1082.88
ubuntu/linux-kvm<5.15.0-1083.88
5.15.0-1083.88
ubuntu/linux-lowlatency<5.15.0-143.153
5.15.0-143.153
ubuntu/linux-lowlatency-hwe-5.19*
ubuntu/linux-lowlatency-hwe-6.2*
ubuntu/linux-lowlatency-hwe-6.5*
ubuntu/linux-lowlatency-hwe-6.8<6.8.0-63.66.1~22.04.1
6.8.0-63.66.1~22.04.1
ubuntu/linux-nvidia<5.15.0-1081.82
5.15.0-1081.82
ubuntu/linux-nvidia-6.2*
ubuntu/linux-nvidia-6.5*
ubuntu/linux-nvidia-6.8<6.8.0-1030.33~22.04.1
6.8.0-1030.33~22.04.1
ubuntu/linux-nvidia-tegra<5.15.0-1040.40
5.15.0-1040.40
ubuntu/linux-nvidia-tegra-igx<5.15.0-1029.29
5.15.0-1029.29
ubuntu/linux-oem-5.17*
ubuntu/linux-oem-6.0*
ubuntu/linux-oem-6.1*
ubuntu/linux-oem-6.5*
ubuntu/linux-oracle<5.15.0-1084.90
5.15.0-1084.90
ubuntu/linux-oracle-6.5*
ubuntu/linux-oracle-6.8<6.8.0-1028.29~22.04.1
6.8.0-1028.29~22.04.1
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<6.8.0-63.66~22.04.1
6.8.0-63.66~22.04.1
ubuntu/linux-starfive-5.19*
ubuntu/linux-starfive-6.2*
ubuntu/linux-starfive-6.5*
ubuntu/linux-xilinx-zynqmp<5.15.0-1051.55
5.15.0-1051.55
ubuntu/linux-bluefield<5.15.0-1070.72
5.15.0-1070.72
ubuntu/linux-intel-iot-realtime<5.15.0-1080.82
5.15.0-1080.82
ubuntu/linux-realtime<5.15.0-1087.96
5.15.0-1087.96
ubuntu/linux-realtime-6.8<6.8.1-1024.25~22.04.1
6.8.1-1024.25~22.04.1
ubuntu/linux-aws-fips*
ubuntu/linux-azure-fips*
ubuntu/linux-fips*
ubuntu/linux-gcp-fips*
ubuntu/linux-aws-fips<5.15.0-1087.94+fips1
5.15.0-1087.94+fips1
ubuntu/linux-azure-fips<5.15.0-1094.103+fips1
5.15.0-1094.103+fips1
ubuntu/linux-fips<5.15.0-143.153+fips1
5.15.0-143.153+fips1
ubuntu/linux-gcp-fips<5.15.0-1086.95+fips1
5.15.0-1086.95+fips1
ubuntu/linux<6.8.0-63.66
6.8.0-63.66
ubuntu/linux-aws<6.8.0-1031.33
6.8.0-1031.33
ubuntu/linux-aws-6.14<6.14.0-1009.9~24.04.1
6.14.0-1009.9~24.04.1
ubuntu/linux-azure<6.8.0-1031.36
6.8.0-1031.36
ubuntu/linux-azure-6.11<6.11.0-1018.18~24.04.1
6.11.0-1018.18~24.04.1
ubuntu/linux-azure-nvidia<6.8.0-1019.20
6.8.0-1019.20
ubuntu/linux-gcp<6.8.0-1032.34
6.8.0-1032.34
ubuntu/linux-gcp-6.11<6.11.0-1017.17~24.04.1
6.11.0-1017.17~24.04.1
ubuntu/linux-gcp-6.14<6.14.0-1011.11~24.04.1
6.14.0-1011.11~24.04.1
ubuntu/linux-gke<6.8.0-1027.31
6.8.0-1027.31
ubuntu/linux-gkeop<6.8.0-1014.16
6.8.0-1014.16
ubuntu/linux-hwe-6.11<6.11.0-29.29~24.04.1
6.11.0-29.29~24.04.1
ubuntu/linux-ibm<6.8.0-1028.28
6.8.0-1028.28
ubuntu/linux-lowlatency<6.8.0-63.66.1
6.8.0-63.66.1
ubuntu/linux-lowlatency-hwe-6.11<6.11.0-1016.17~24.04.1
6.11.0-1016.17~24.04.1
ubuntu/linux-nvidia<6.8.0-1030.33
6.8.0-1030.33
ubuntu/linux-nvidia-6.11<6.11.0-1012.12
6.11.0-1012.12
ubuntu/linux-nvidia-lowlatency<6.8.0-1030.33.1
6.8.0-1030.33.1
ubuntu/linux-nvidia-tegra<6.8.0-1008.8
6.8.0-1008.8
ubuntu/linux-oem-6.11<6.11.0-1025.25
6.11.0-1025.25
ubuntu/linux-oem-6.14<6.14.0-1006.6
6.14.0-1006.6
ubuntu/linux-oem-6.8<6.8.0-1030.30
6.8.0-1030.30
ubuntu/linux-oracle<6.8.0-1028.29
6.8.0-1028.29
ubuntu/linux-oracle-6.14<6.14.0-1009.9~24.04.1
6.14.0-1009.9~24.04.1
ubuntu/linux-raspi<6.8.0-1030.34
6.8.0-1030.34
ubuntu/linux-raspi-realtime*
ubuntu/linux-realtime*
ubuntu/linux-riscv*
ubuntu/linux-riscv-6.14<6.14.0-23.23.1~24.04.1
6.14.0-23.23.1~24.04.1
ubuntu/linux-xilinx<6.8.0-1017.18
6.8.0-1017.18
ubuntu/linux-raspi-realtime<6.8.0-2025.26
6.8.0-2025.26
ubuntu/linux-realtime<6.8.1-1024.25
6.8.1-1024.25
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*

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. 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
  2. Upgrade

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

    Fixed in 4.15.0-1190.205~14.04.1
  3. Upgrade

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

    Fixed in 4.15.0-1182.195~16.04.1
  4. Upgrade

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

    Fixed in 4.15.0-1190.205~16.04.1
  5. Upgrade

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

    Fixed in 4.15.0-1175.192~16.04.1
  6. Upgrade

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

    Fixed in 4.15.0-239.251~16.04.1
  7. Upgrade

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

    Fixed in 4.15.0-1144.155~16.04.1
  8. Upgrade

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

    Fixed in 4.15.0-239.251
  9. Upgrade

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

    Fixed in 4.15.0-1182.195
  10. Upgrade

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

    Fixed in 5.4.0-1148.158~18.04.1
  11. Upgrade

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

    Fixed in 4.15.0-1190.205
  12. Upgrade

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

    Fixed in 5.4.0-1153.160~18.04.1
  13. Upgrade

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

    Fixed in 4.15.0-1175.192
  14. Upgrade

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

    Fixed in 5.4.0-1151.160~18.04.1
  15. Upgrade

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

    Fixed in 5.4.0-219.239~18.04.1
  16. Upgrade

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

    Fixed in 5.4.0-1094.99~18.04.1
  17. Upgrade

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

    Fixed in 4.15.0-1165.170
  18. Upgrade

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

    Fixed in 4.15.0-1144.155
  19. Upgrade

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

    Fixed in 5.4.0-1146.156~18.04.1
  20. Upgrade

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

    Fixed in 5.4.0-1131.144~18.04.1
  21. Upgrade

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

    Fixed in 4.15.0-2120.126
  22. Upgrade

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

    Fixed in 4.15.0-2099.105
  23. Upgrade

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

    Fixed in 4.15.0-1137.148
  24. Upgrade

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

    Fixed in 4.15.0-2083.89
  25. Upgrade

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

    Fixed in 5.4.0-219.239
  26. Upgrade

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

    Fixed in 5.4.0-1148.158
  27. Upgrade

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

    Fixed in 5.15.0-1087.94~20.04.1
  28. Upgrade

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

    Fixed in 5.4.0-1153.160
  29. Upgrade

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

    Fixed in 5.15.0-1094.103~20.04.1
  30. Upgrade

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

    Fixed in 5.4.0-1107.114
  31. Upgrade

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

    Fixed in 5.4.0-1151.160
  32. Upgrade

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

    Fixed in 5.15.0-1086.95~20.04.1
  33. Upgrade

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

    Fixed in 5.15.0-143.153~20.04.1
  34. Upgrade

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

    Fixed in 5.4.0-1094.99
  35. Upgrade

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

    Fixed in 5.15.0-1079.82~20.04.1
  36. Upgrade

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

    Fixed in 5.15.0-1083.89~20.04.1
  37. Upgrade

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

    Fixed in 5.4.0-1052.55
  38. Upgrade

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

    Fixed in 5.4.0-1135.144
  39. Upgrade

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

    Fixed in 5.15.0-143.153~20.04.1
  40. Upgrade

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

    Fixed in 5.15.0-1040.40~20.04.1
  41. Upgrade

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

    Fixed in 5.4.0-1146.156
  42. Upgrade

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

    Fixed in 5.15.0-1084.90~20.04.1
  43. Upgrade

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

    Fixed in 5.4.0-1131.144
  44. Upgrade

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

    Fixed in 5.15.0-1082.86~20.04.1
  45. Upgrade

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

    Fixed in 5.4.0-1066.70
  46. Upgrade

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

    Fixed in 5.4.0-1148.158+fips1
  47. Upgrade

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

    Fixed in 5.4.0-1154.161+fips1
  48. Upgrade

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

    Fixed in 5.4.0-1122.132
  49. Upgrade

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

    Fixed in 5.4.0-1151.160+fips1
  50. Upgrade

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

    Fixed in 5.15.0-143.153
  51. Upgrade

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

    Fixed in 5.15.0-1087.94
  52. Upgrade

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

    Fixed in 6.8.0-1031.33~22.04.1
  53. Upgrade

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

    Fixed in 5.15.0-1092.101
  54. Upgrade

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

    Fixed in 6.8.0-1031.36~22.04.1
  55. Upgrade

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

    Fixed in 5.15.0-1092.101.1
  56. Upgrade

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

    Fixed in 5.15.0-1086.95
  57. Upgrade

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

    Fixed in 6.8.0-1032.34~22.04.1
  58. Upgrade

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

    Fixed in 5.15.0-1084.90
  59. Upgrade

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

    Fixed in 5.15.0-1069.77
  60. Upgrade

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

    Fixed in 6.8.0-64.67~22.04.1
  61. Upgrade

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

    Fixed in 5.15.0-1079.82
  62. Upgrade

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

    Fixed in 6.8.0-1028.28~22.04.1
  63. Upgrade

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

    Fixed in 5.15.0-1082.88
  64. Upgrade

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

    Fixed in 5.15.0-1083.88
  65. Upgrade

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

    Fixed in 5.15.0-143.153
  66. Upgrade

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

    Fixed in 6.8.0-63.66.1~22.04.1
  67. Upgrade

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

    Fixed in 5.15.0-1081.82
  68. Upgrade

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

    Fixed in 6.8.0-1030.33~22.04.1
  69. Upgrade

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

    Fixed in 5.15.0-1040.40
  70. Upgrade

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

    Fixed in 5.15.0-1029.29
  71. Upgrade

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

    Fixed in 5.15.0-1084.90
  72. Upgrade

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

    Fixed in 6.8.0-1028.29~22.04.1
  73. Upgrade

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

    Fixed in 5.15.0-1083.86
  74. Upgrade

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

    Fixed in 6.8.0-63.66~22.04.1
  75. Upgrade

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

    Fixed in 5.15.0-1051.55
  76. Upgrade

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

    Fixed in 5.15.0-1070.72
  77. Upgrade

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

    Fixed in 5.15.0-1080.82
  78. Upgrade

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

    Fixed in 5.15.0-1087.96
  79. Upgrade

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

    Fixed in 6.8.1-1024.25~22.04.1
  80. Upgrade

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

    Fixed in 5.15.0-1087.94+fips1
  81. Upgrade

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

    Fixed in 5.15.0-1094.103+fips1
  82. Upgrade

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

    Fixed in 5.15.0-143.153+fips1
  83. Upgrade

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

    Fixed in 5.15.0-1086.95+fips1
  84. Upgrade

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

    Fixed in 6.8.0-63.66
  85. Upgrade

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

    Fixed in 6.8.0-1031.33
  86. Upgrade

    Upgrade ubuntu/linux-aws-6.14 to a version that resolves this vulnerability.

    Fixed in 6.14.0-1009.9~24.04.1
  87. Upgrade

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

    Fixed in 6.8.0-1031.36
  88. Upgrade

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

    Fixed in 6.11.0-1018.18~24.04.1
  89. Upgrade

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

    Fixed in 6.8.0-1019.20
  90. Upgrade

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

    Fixed in 6.8.0-1032.34
  91. Upgrade

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

    Fixed in 6.11.0-1017.17~24.04.1
  92. Upgrade

    Upgrade ubuntu/linux-gcp-6.14 to a version that resolves this vulnerability.

    Fixed in 6.14.0-1011.11~24.04.1
  93. Upgrade

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

    Fixed in 6.8.0-1027.31
  94. Upgrade

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

    Fixed in 6.8.0-1014.16
  95. Upgrade

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

    Fixed in 6.11.0-29.29~24.04.1
  96. Upgrade

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

    Fixed in 6.8.0-1028.28
  97. Upgrade

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

    Fixed in 6.8.0-63.66.1
  98. Upgrade

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

    Fixed in 6.11.0-1016.17~24.04.1
  99. Upgrade

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

    Fixed in 6.8.0-1030.33
  100. Upgrade

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

    Fixed in 6.11.0-1012.12
  101. Upgrade

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

    Fixed in 6.8.0-1030.33.1
  102. Upgrade

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

    Fixed in 6.8.0-1008.8
  103. Upgrade

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

    Fixed in 6.11.0-1025.25
  104. Upgrade

    Upgrade ubuntu/linux-oem-6.14 to a version that resolves this vulnerability.

    Fixed in 6.14.0-1006.6
  105. Upgrade

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

    Fixed in 6.8.0-1030.30
  106. Upgrade

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

    Fixed in 6.8.0-1028.29
  107. Upgrade

    Upgrade ubuntu/linux-oracle-6.14 to a version that resolves this vulnerability.

    Fixed in 6.14.0-1009.9~24.04.1
  108. Upgrade

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

    Fixed in 6.8.0-1030.34
  109. Upgrade

    Upgrade ubuntu/linux-riscv-6.14 to a version that resolves this vulnerability.

    Fixed in 6.14.0-23.23.1~24.04.1
  110. Upgrade

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

    Fixed in 6.8.0-1017.18
  111. Upgrade

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

    Fixed in 6.8.0-2025.26
  112. Upgrade

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

    Fixed in 6.8.1-1024.25
  113. Upgrade

    Upgrade ubuntu/linux-realtime-6.14 to a version that resolves this vulnerability.

    Fixed in 6.14.0-1010.10~24.04.1
  114. Upgrade

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

    Fixed in 6.8.0-78.78+fips1

Event History

May 20, 2025
CVE Published
via MITRE·03:21 PM
Data Sourced
via MITRE·03:21 PM
Description
Data Sourced
via OSV·04:15 PM
DescriptionSeverityAffected Software
Data Sourced
via NVD·04:15 PM
RemedyDescriptionSeverityAffected Software
Jul 11, 2025
Data Sourced
via Microsoft·07:00 AM
DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What is the severity of CVE-2025-37932?

CVE-2025-37932 is classified with a medium severity level due to its potential impact on system performance.

2

How do I fix CVE-2025-37932?

To fix CVE-2025-37932, you should update your Linux kernel to the latest version where this vulnerability has been patched.

3

What components are affected by CVE-2025-37932?

CVE-2025-37932 affects the sch_htb module in the Linux Kernel.

4

Is my system vulnerable to CVE-2025-37932?

If you are running an affected version of the Linux Kernel that has not been updated, your system may be vulnerable to CVE-2025-37932.

5

What exploit techniques are associated with CVE-2025-37932?

CVE-2025-37932 may be exploited through denial of service attacks that target the htb_qlen_notify() function.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203