CVE-2022-39188
Public on 2022-09-02
Modified on 2024-03-01
Description
An issue was discovered in include/asm-generic/tlb.h in the Linux kernel before 5.19. Because of a race condition (unmap_mapping_range versus munmap), a device driver can free a page while it still has stale TLB entries. This only occurs in situations with VM_PFNMAP VMAs.
Severity
Medium
CVSS v3 Base Score
See breakdown
Affected Packages
| Platform | Package | Release Date | Advisory | Status |
|---|---|---|---|---|
| Amazon Linux 1 | kernel | 2022-09-30 | ALAS-2022-1636 | Fixed |
| Amazon Linux 2 - Core | kernel | 2022-09-30 | ALAS2-2022-1852 | Fixed |
| Amazon Linux 2 - Kernel-5.10 Extra | kernel | 2022-09-30 | ALAS2KERNEL-5.10-2022-020 | Fixed |
| Amazon Linux 2 - Kernel-5.15 Extra | kernel | 2022-09-30 | ALAS2KERNEL-5.15-2022-008 | Fixed |
| Amazon Linux 2 - Kernel-5.4 Extra | kernel | 2022-09-30 | ALAS2KERNEL-5.4-2022-036 | Fixed |
| Amazon Linux 2023 | kernel | 2023-02-17 | ALAS2023-2023-070 | Fixed |
CVSS Scores
| Score Type | Score | Vector | |
|---|---|---|---|
| Amazon Linux | CVSSv3 | 4.7 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVD | CVSSv3 | 4.7 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H |