CVE-2022-50285: mm,hugetlb: take hugetlb_lock before decrementing h->resv_huge_pages

Published Sep 15, 2025
·
Updated

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

mm,hugetlb: take hugetlblock before decrementing h->resvhugepages

The h->hugepages counters are protected by the hugetlblock, but allochugepage has a corner case where it can decrement the counter outside of the lock.

This could lead to a corrupted value of h->resvhugepages, which we have observed on our systems.

Take the hugetlblock before decrementing h->resvhugepages to avoid a potential race.

Affected Software

190 affected componentsFixes available
Linux Kernel
Linux Linux kernel>=4.3.6<4.4
Linux Linux kernel>=4.4.1<4.9.332
Linux Linux kernel>=4.10<4.14.298
Linux Linux kernel>=4.15<4.19.264
Linux Linux kernel>=4.20<5.4.223
Linux Linux kernel>=5.5<5.10.153
Linux Linux kernel>=5.11<5.15.76
Linux Linux kernel>=5.16<6.0.6
Linux Linux kernel=4.4
Linux Linux kernel=4.4-rc5
Linux Linux kernel=4.4-rc6
Linux Linux kernel=4.4-rc7
Linux Linux kernel=4.4-rc8
Linux Linux kernel=6.1-rc1
debian/linux<6.0.6-1
6.0.6-1
debian/linux<6.0.6-1
6.0.6-1
debian/linux<6.0.6-1
6.0.6-1
linux/kernel>=4.4.0<4.9.332
4.9.332
linux/kernel>=4.10.0<4.14.298
4.14.298
linux/kernel>=4.15.0<4.19.264
4.19.264
linux/kernel>=4.20.0<5.4.223
5.4.223
linux/kernel>=5.5.0<5.10.153
5.10.153
linux/kernel>=5.11.0<5.15.76
5.15.76
linux/kernel>=5.16.0<6.0.6
6.0.6
debian/linux
6.1.176-16.1.190-16.12.107-16.12.115-27.2.15-1
ubuntu/linux-azure<4.15.0-1162.177~14.04.1
4.15.0-1162.177~14.04.1
ubuntu/linux-aws*
ubuntu/linux-lts-xenial*
ubuntu/linux-aws-hwe<4.15.0-1151.164~16.04.1
4.15.0-1151.164~16.04.1
ubuntu/linux-azure<4.15.0-1162.177~16.04.1
4.15.0-1162.177~16.04.1
ubuntu/linux-gcp<4.15.0-1146.162~16.04.1
4.15.0-1146.162~16.04.1
ubuntu/linux-hwe<4.15.0-206.217~16.04.1
4.15.0-206.217~16.04.1
ubuntu/linux-oracle<4.15.0-1115.126~16.04.1
4.15.0-1115.126~16.04.1
ubuntu/linux*
ubuntu/linux-aws*
ubuntu/linux-hwe-edge*
ubuntu/linux-kvm*
ubuntu/linux-fips*
ubuntu/linux-fips*
ubuntu/linux<4.15.0-204.215
4.15.0-204.215
ubuntu/linux-aws<4.15.0-1150.163
4.15.0-1150.163
ubuntu/linux-aws-5.4<5.4.0-1096.104~18.04.1
5.4.0-1096.104~18.04.1
ubuntu/linux-azure-4.15<4.15.0-1161.176
4.15.0-1161.176
ubuntu/linux-azure-5.4<5.4.0-1103.109~18.04.1
5.4.0-1103.109~18.04.1
ubuntu/linux-gcp-4.15<4.15.0-1145.161
4.15.0-1145.161
ubuntu/linux-gcp-5.4<5.4.0-1100.109~18.04.1
5.4.0-1100.109~18.04.1
ubuntu/linux-hwe-5.4<5.4.0-139.156~18.04.1
5.4.0-139.156~18.04.1
ubuntu/linux-ibm-5.4<5.4.0-1044.49~18.04.1
5.4.0-1044.49~18.04.1
ubuntu/linux-kvm<4.15.0-1135.140
4.15.0-1135.140
ubuntu/linux-oracle<4.15.0-1114.125
4.15.0-1114.125
ubuntu/linux-oracle-5.4<5.4.0-1093.102~18.04.1
5.4.0-1093.102~18.04.1
ubuntu/linux-raspi-5.4<5.4.0-1080.91~18.04.1
5.4.0-1080.91~18.04.1
ubuntu/linux-aws-5.0*
ubuntu/linux-aws-5.3*
ubuntu/linux-azure*
ubuntu/linux-azure-5.3*
ubuntu/linux-azure-edge*
ubuntu/linux-gcp*
ubuntu/linux-gcp-5.3*
ubuntu/linux-gke-4.15*
ubuntu/linux-gke-5.4*
ubuntu/linux-gkeop-5.4*
ubuntu/linux-hwe*
ubuntu/linux-hwe-edge*
ubuntu/linux-oem*
ubuntu/linux-oracle-5.0*
ubuntu/linux-oracle-5.3*
ubuntu/linux-aws-fips<4.15.0-2089.95
4.15.0-2089.95
ubuntu/linux-azure-fips<4.15.0-2070.76
4.15.0-2070.76
ubuntu/linux-fips<4.15.0-1107.118
4.15.0-1107.118
ubuntu/linux-gcp-fips<4.15.0-2054.59
4.15.0-2054.59
ubuntu/linux-aws-fips*
ubuntu/linux-azure-fips*
ubuntu/linux-fips*
ubuntu/linux-gcp-fips*
ubuntu/linux<5.4.0-139.156
5.4.0-139.156
ubuntu/linux-aws<5.4.0-1096.104
5.4.0-1096.104
ubuntu/linux-aws-5.15<5.15.0-1030.34~20.04.1
5.15.0-1030.34~20.04.1
ubuntu/linux-azure<5.4.0-1103.109
5.4.0-1103.109
ubuntu/linux-azure-5.15<5.15.0-1033.40~20.04.1
5.15.0-1033.40~20.04.1
ubuntu/linux-bluefield<5.4.0-1058.64
5.4.0-1058.64
ubuntu/linux-gcp<5.4.0-1100.109
5.4.0-1100.109
ubuntu/linux-gcp-5.15<5.15.0-1029.36~20.04.1
5.15.0-1029.36~20.04.1
ubuntu/linux-hwe-5.15<5.15.0-60.66~20.04.1
5.15.0-60.66~20.04.1
ubuntu/linux-ibm<5.4.0-1044.49
5.4.0-1044.49
ubuntu/linux-intel-iotg-5.15<5.15.0-1025.30~20.04.1
5.15.0-1025.30~20.04.1
ubuntu/linux-iot<5.4.0-1012.14
5.4.0-1012.14
ubuntu/linux-kvm<5.4.0-1086.92
5.4.0-1086.92
ubuntu/linux-lowlatency-hwe-5.15<5.15.0-60.66~20.04.1
5.15.0-60.66~20.04.1
ubuntu/linux-oracle<5.4.0-1093.102
5.4.0-1093.102
ubuntu/linux-oracle-5.15<5.15.0-1029.35~20.04.1
5.15.0-1029.35~20.04.1
ubuntu/linux-raspi<5.4.0-1080.91
5.4.0-1080.91
ubuntu/linux-riscv-5.15<5.15.0-1029.33~20.04.1
5.15.0-1029.33~20.04.1
ubuntu/linux-xilinx-zynqmp<5.4.0-1021.25
5.4.0-1021.25
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-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<5.4.0-1096.104+fips1
5.4.0-1096.104+fips1
ubuntu/linux-azure-fips<5.4.0-1103.109+fips1
5.4.0-1103.109+fips1
ubuntu/linux-fips<5.4.0-1072.81
5.4.0-1072.81
ubuntu/linux-gcp-fips<5.4.0-1100.109+fips1
5.4.0-1100.109+fips1
ubuntu/linux-aws-fips*
ubuntu/linux-azure-fips*
ubuntu/linux-fips*
ubuntu/linux-gcp-fips*
ubuntu/linux<5.15.0-60.66
5.15.0-60.66
ubuntu/linux-allwinner-5.19*
ubuntu/linux-aws<5.15.0-1030.34
5.15.0-1030.34
ubuntu/linux-aws-5.19*
ubuntu/linux-aws-6.2*
ubuntu/linux-aws-6.5*
ubuntu/linux-azure<5.15.0-1033.40
5.15.0-1033.40
ubuntu/linux-azure-5.19*
ubuntu/linux-azure-6.2*
ubuntu/linux-azure-6.5*
ubuntu/linux-azure-fde<5.15.0-1033.40.1
5.15.0-1033.40.1
ubuntu/linux-azure-fde-5.19*
ubuntu/linux-azure-fde-6.2*
ubuntu/linux-gcp<5.15.0-1029.36
5.15.0-1029.36
ubuntu/linux-gcp-5.19*
ubuntu/linux-gcp-6.2*
ubuntu/linux-gcp-6.5*
ubuntu/linux-gke<5.15.0-1027.32
5.15.0-1027.32
ubuntu/linux-gkeop<5.15.0-1015.19
5.15.0-1015.19
ubuntu/linux-hwe-5.19*
ubuntu/linux-hwe-6.2*
ubuntu/linux-hwe-6.5*
ubuntu/linux-ibm<5.15.0-1025.28
5.15.0-1025.28
ubuntu/linux-intel-iot-realtime*
ubuntu/linux-intel-iotg<5.15.0-1025.30
5.15.0-1025.30
ubuntu/linux-kvm<5.15.0-1028.33
5.15.0-1028.33
ubuntu/linux-lowlatency<5.15.0-60.66
5.15.0-60.66
ubuntu/linux-lowlatency-hwe-5.19*
ubuntu/linux-lowlatency-hwe-6.2*
ubuntu/linux-lowlatency-hwe-6.5*
ubuntu/linux-nvidia<5.15.0-1017.17
5.15.0-1017.17
ubuntu/linux-nvidia-6.2*
ubuntu/linux-nvidia-6.5*
ubuntu/linux-oem-5.17*
ubuntu/linux-oem-6.0*
ubuntu/linux-oem-6.1*
ubuntu/linux-oem-6.5*
ubuntu/linux-oracle<5.15.0-1029.35
5.15.0-1029.35
ubuntu/linux-oracle-6.5*
ubuntu/linux-raspi<5.15.0-1024.26
5.15.0-1024.26
ubuntu/linux-realtime*
ubuntu/linux-riscv*
ubuntu/linux-riscv-5.19*
ubuntu/linux-riscv-6.5*
ubuntu/linux-starfive-5.19*
ubuntu/linux-starfive-6.2*
ubuntu/linux-starfive-6.5*
ubuntu/linux-bluefield<5.15.0-1014.16
5.15.0-1014.16
ubuntu/linux-azure-6.11*
ubuntu/linux-gcp-6.11*
ubuntu/linux-hwe-6.11*
ubuntu/linux-intel*
ubuntu/linux-lowlatency-hwe-6.11*
ubuntu/linux-oem-6.11*
ubuntu/linux-oem-6.8*
ubuntu/linux-raspi-realtime*
ubuntu/linux-realtime*
ubuntu/linux-riscv*
ubuntu/linux-vmware*

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

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

    Fixed in 6.0.6-1
  2. Upgrade

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

    Fixed in 4.15.0-1162.177~14.04.1
  3. Upgrade

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

    Fixed in 4.15.0-1151.164~16.04.1
  4. Upgrade

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

    Fixed in 4.15.0-1162.177~16.04.1
  5. Upgrade

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

    Fixed in 4.15.0-1146.162~16.04.1
  6. Upgrade

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

    Fixed in 4.15.0-206.217~16.04.1
  7. Upgrade

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

    Fixed in 4.15.0-1115.126~16.04.1
  8. Upgrade

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

    Fixed in 4.15.0-204.215
  9. Upgrade

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

    Fixed in 4.15.0-1150.163
  10. Upgrade

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

    Fixed in 5.4.0-1096.104~18.04.1
  11. Upgrade

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

    Fixed in 4.15.0-1161.176
  12. Upgrade

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

    Fixed in 5.4.0-1103.109~18.04.1
  13. Upgrade

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

    Fixed in 4.15.0-1145.161
  14. Upgrade

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

    Fixed in 5.4.0-1100.109~18.04.1
  15. Upgrade

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

    Fixed in 5.4.0-139.156~18.04.1
  16. Upgrade

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

    Fixed in 5.4.0-1044.49~18.04.1
  17. Upgrade

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

    Fixed in 4.15.0-1135.140
  18. Upgrade

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

    Fixed in 4.15.0-1114.125
  19. Upgrade

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

    Fixed in 5.4.0-1093.102~18.04.1
  20. Upgrade

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

    Fixed in 5.4.0-1080.91~18.04.1
  21. Upgrade

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

    Fixed in 4.15.0-2089.95
  22. Upgrade

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

    Fixed in 4.15.0-2070.76
  23. Upgrade

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

    Fixed in 4.15.0-1107.118
  24. Upgrade

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

    Fixed in 4.15.0-2054.59
  25. Upgrade

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

    Fixed in 5.4.0-139.156
  26. Upgrade

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

    Fixed in 5.4.0-1096.104
  27. Upgrade

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

    Fixed in 5.15.0-1030.34~20.04.1
  28. Upgrade

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

    Fixed in 5.4.0-1103.109
  29. Upgrade

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

    Fixed in 5.15.0-1033.40~20.04.1
  30. Upgrade

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

    Fixed in 5.4.0-1058.64
  31. Upgrade

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

    Fixed in 5.4.0-1100.109
  32. Upgrade

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

    Fixed in 5.15.0-1029.36~20.04.1
  33. Upgrade

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

    Fixed in 5.15.0-60.66~20.04.1
  34. Upgrade

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

    Fixed in 5.4.0-1044.49
  35. Upgrade

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

    Fixed in 5.15.0-1025.30~20.04.1
  36. Upgrade

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

    Fixed in 5.4.0-1012.14
  37. Upgrade

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

    Fixed in 5.4.0-1086.92
  38. Upgrade

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

    Fixed in 5.15.0-60.66~20.04.1
  39. Upgrade

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

    Fixed in 5.4.0-1093.102
  40. Upgrade

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

    Fixed in 5.15.0-1029.35~20.04.1
  41. Upgrade

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

    Fixed in 5.4.0-1080.91
  42. Upgrade

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

    Fixed in 5.15.0-1029.33~20.04.1
  43. Upgrade

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

    Fixed in 5.4.0-1021.25
  44. Upgrade

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

    Fixed in 5.4.0-1096.104+fips1
  45. Upgrade

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

    Fixed in 5.4.0-1103.109+fips1
  46. Upgrade

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

    Fixed in 5.4.0-1072.81
  47. Upgrade

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

    Fixed in 5.4.0-1100.109+fips1
  48. Upgrade

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

    Fixed in 5.15.0-60.66
  49. Upgrade

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

    Fixed in 5.15.0-1030.34
  50. Upgrade

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

    Fixed in 5.15.0-1033.40
  51. Upgrade

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

    Fixed in 5.15.0-1033.40.1
  52. Upgrade

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

    Fixed in 5.15.0-1029.36
  53. Upgrade

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

    Fixed in 5.15.0-1027.32
  54. Upgrade

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

    Fixed in 5.15.0-1015.19
  55. Upgrade

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

    Fixed in 5.15.0-1025.28
  56. Upgrade

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

    Fixed in 5.15.0-1025.30
  57. Upgrade

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

    Fixed in 5.15.0-1028.33
  58. Upgrade

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

    Fixed in 5.15.0-60.66
  59. Upgrade

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

    Fixed in 5.15.0-1017.17
  60. Upgrade

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

    Fixed in 5.15.0-1029.35
  61. Upgrade

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

    Fixed in 5.15.0-1024.26
  62. Upgrade

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

    Fixed in 5.15.0-1014.16
  63. Upgrade

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

    Fixed in 4.9.332
  64. Upgrade

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

    Fixed in 4.14.298
  65. Upgrade

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

    Fixed in 4.19.264
  66. Upgrade

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

    Fixed in 5.4.223
  67. Upgrade

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

    Fixed in 5.10.153
  68. Upgrade

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

    Fixed in 5.15.76
  69. Upgrade

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

    Fixed in 6.0.6
  70. 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 7.2.15-1

Event History

Sep 15, 2025
CVE Published
via MITRE·02:21 PM
Data Sourced
via MITRE·02:21 PM
Description
Data Sourced
via OSV·02:21 PM
DescriptionAffected Software
Data Sourced
via NVD·03:15 PM
RemedyDescriptionSeverityAffected Software
Nov 11, 2026
Data Sourced
via OSV·09:37 AM
Severity

Frequently Asked Questions

1

What is the severity of CVE-2022-50285?

CVE-2022-50285 has a severity rating that may vary based on the affected Linux kernel version.

2

How do I fix CVE-2022-50285?

To remediate CVE-2022-50285, update your Linux kernel to a version that contains the patch addressing this vulnerability.

3

What versions of Linux kernel are affected by CVE-2022-50285?

CVE-2022-50285 affects various Linux kernel versions between 4.4 and 6.1, particularly those versions that do not include the fixes.

4

What impact does CVE-2022-50285 have on system security?

Exploiting CVE-2022-50285 could lead to potential memory corruption issues, affecting system stability and security.

5

Is CVE-2022-50285 remotely exploitable?

CVE-2022-50285 requires local access to the system to exploit, thus it is not categorized as remotely exploitable.

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Contact

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