Vulnerability in Linux Kernel
CVE-2022-39188
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.
Vulnerability class: Race Condition
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.002 (12.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 12th percentile — 12.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Linux Kernel
- Debian Linux — versions 10.0, 11.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugs.chromium.org/p/project-zero/issues/detail (Patch, Third Party Advisory, Issue Tracking)
- lore.kernel.org/stable/CAG48ez3SEqOPcPCYGHVZv4iqEApujD5VtM3Re-tCKLDEFdEdbg@mail…
- cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19 (Patch, Release Notes, Vendor Advisory)
- github.com/torvalds/linux/commit/b67fbebd4cf980aecbcc750e1462128bffe8ae15 (Patch, Third Party Advisory)
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Vendor Advisory)
- lists.debian.org/debian-lts-announce/2022/10/msg00000.html (mailing-list, Mailing List, Third Party Advisory)
- www.debian.org/security/2022/dsa-5257 (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2022/11/msg00001.html (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-39188?
- CVE-2022-39188 is a medium-severity vulnerability in Linux Kernel, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 4.7/10. Published 2022-09-02.
- How severe is CVE-2022-39188?
- Medium severity. CVSS v3 base score is 4.7 out of 10.
- Is CVE-2022-39188 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.