VulnerabilityModified
CVE-2022-39188
Because of a race condition (unmap_mapping_range versus munmap), a device driver can free a page while it still has stale TLB entries.
MEDIUM 4.7EPSS 0.22%
Does this matter?
Lower severity and a low EPSS score (0.22%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 4.7 MEDIUMCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.22% probability · 13th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-362
- Affected
- linux/linux kernel · debian/debian linux
- Source
- cve@mitre.org
References
- https://bugs.chromium.org/p/project-zero/issues/detail?id=2329Issue Tracking, Patch, Third Party Advisory
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19Patch, Release Notes, Vendor Advisory
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b67fbebd4cf980aecbcc750e1462128bffe8ae15Patch, Vendor Advisory
- https://github.com/torvalds/linux/commit/b67fbebd4cf980aecbcc750e1462128bffe8ae15Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/10/msg00000.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/11/msg00001.htmlMailing List, Third Party Advisory
- https://lore.kernel.org/stable/CAG48ez3SEqOPcPCYGHVZv4iqEApujD5VtM3Re-tCKLDEFdEdbg%40mail.gmail.com/
- https://www.debian.org/security/2022/dsa-5257Third Party Advisory
- https://bugs.chromium.org/p/project-zero/issues/detail?id=2329Issue Tracking, Patch, Third Party Advisory
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19Patch, Release Notes, Vendor Advisory
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b67fbebd4cf980aecbcc750e1462128bffe8ae15Patch, Vendor Advisory
- https://github.com/torvalds/linux/commit/b67fbebd4cf980aecbcc750e1462128bffe8ae15Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/10/msg00000.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/11/msg00001.htmlMailing List, Third Party Advisory
- https://lore.kernel.org/stable/CAG48ez3SEqOPcPCYGHVZv4iqEApujD5VtM3Re-tCKLDEFdEdbg%40mail.gmail.com/
- https://www.debian.org/security/2022/dsa-5257Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.