CVE-2022-39188
MEDIUM
4.7
CVSS Score
Published: September 2, 2022 at 12:00 AM UTC
Updated: October 14, 2026 at 06:17 PM UTC
2 products affected across 2 vendorsLinux KernelDebian Linux
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Severity
MEDIUM4.7
Exploit prediction
EPSS 0.2%
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Debian Linux· Debiandrupal
95%v < 5.19
Affected range stops below 5.19, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://bugs.chromium.org/p/project-zero/issues/detail?id=2329
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b67fbebd4cf980aecbcc750e1462128bffe8ae15
- https://github.com/torvalds/linux/commit/b67fbebd4cf980aecbcc750e1462128bffe8ae15
- https://www.debian.org/security/2022/dsa-5257
References (11)
Issue TrackingPatchThird Party Advisory
Source: [email protected]
https://bugs.chromium.org/p/project-zero/issues/detail?id=2329PatchRelease NotesVendor Advisory
Source: [email protected]
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19PatchThird Party Advisory
Source: [email protected]
https://github.com/torvalds/linux/commit/b67fbebd4cf980aecbcc750e1462128bffe8ae15Mailing ListThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2022/10/msg00000.htmlMailing ListThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2022/11/msg00001.htmlVendor AdvisoryThird Party Advisory
Source: [email protected]
https://www.debian.org/security/2022/dsa-5257CVSS
- Attack Vector
- LOCAL
- Complexity
- HIGH
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-362
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