CVE-2022-39188

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.

Category

4.7
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.02%
Vendor Advisory debian.org Vendor Advisory kernel.org Vendor Advisory kernel.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://bugs.chromium.org/p/project-zero/issues/detail?id=2329 issue tracking third party advisory patch
https://lore.kernel.org/stable/CAG48ez3SEqOPcPCYGHVZv4iqEApujD5VtM3Re-tCKLDEFdEdbg%40mail.gmail.com/
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19 release notes patch vendor advisory
https://github.com/torvalds/linux/commit/b67fbebd4cf980aecbcc750e1462128bffe8ae15 third party advisory patch
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b67fbebd4cf980aecbcc750e1462128bffe8ae15 patch vendor advisory
https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html third party advisory mailing list
https://www.debian.org/security/2022/dsa-5257 third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2022-39188?
CVE-2022-39188 has been scored as a medium severity vulnerability.
How to fix CVE-2022-39188?
To fix CVE-2022-39188, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-39188 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2022-39188 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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