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.
Fix
Patch, vendor advisory and mitigation references on NVD 8
- https://bugs.chromium.org/p/project-zero/issues/detail?id=2329 Issue Tracking, Patch, Third Party Advisory
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19 Patch, Release Notes, Vendor Advisory
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b67fbebd4cf980aecbcc750e1462128bffe8ae15 Patch, Vendor Advisory
- https://github.com/torvalds/linux/commit/b67fbebd4cf980aecbcc750e1462128bffe8ae15 Patch, Third Party Advisory
- https://bugs.chromium.org/p/project-zero/issues/detail?id=2329 Issue Tracking, Patch, Third Party Advisory
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19 Patch, Release Notes, Vendor Advisory
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b67fbebd4cf980aecbcc750e1462128bffe8ae15 Patch, Vendor Advisory
- https://github.com/torvalds/linux/commit/b67fbebd4cf980aecbcc750e1462128bffe8ae15 Patch, Third Party Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 4.7 · linux, debianNVD modified 2026-10-14 18:17
Affected (CPE criteria) 3
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
References 19
- https://bugs.chromium.org/p/project-zero/issues/detail?id=2329 Issue Tracking, Patch, Third Party Advisory
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19 Patch, Release Notes, Vendor Advisory
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b67fbebd4cf980aecbcc750e1462128bffe8ae15 Patch, Vendor Advisory
- https://github.com/torvalds/linux/commit/b67fbebd4cf980aecbcc750e1462128bffe8ae15 Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html Mailing List, Third Party Advisory
- https://lore.kernel.org/stable/CAG48ez3SEqOPcPCYGHVZv4iqEApujD5VtM3Re-tCKLDEFdEdbg%40mail.gmail.com/
- https://www.debian.org/security/2022/dsa-5257 Third Party Advisory
- https://bugs.chromium.org/p/project-zero/issues/detail?id=2329 Issue Tracking, Patch, Third Party Advisory
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19 Patch, Release Notes, Vendor Advisory
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b67fbebd4cf980aecbcc750e1462128bffe8ae15 Patch, Vendor Advisory
- https://github.com/torvalds/linux/commit/b67fbebd4cf980aecbcc750e1462128bffe8ae15 Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html Mailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html Mailing List, Third Party Advisory
- https://lore.kernel.org/stable/CAG48ez3SEqOPcPCYGHVZv4iqEApujD5VtM3Re-tCKLDEFdEdbg%40mail.gmail.com/
- https://www.debian.org/security/2022/dsa-5257 Third Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-769027.html
- https://cert-portal.siemens.com/productcert/html/ssa-794697.html
- https://cert-portal.siemens.com/productcert/html/ssa-831302.html