🔐 CVE Alert

CVE-2026-98872

UNKNOWN 0.0

freevxfs: don't BUG() on unknown typed-extent type

CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th

In the Linux kernel, the following vulnerability has been resolved: freevxfs: don't BUG() on unknown typed-extent type vxfs_bmap_typed() handles four typed-extent types and calls BUG() in its default case, so an on-disk typed extent with any other type value crashes the kernel. It is reachable from ioctl(FIBMAP) on a regular file: kernel BUG at fs/freevxfs/vxfs_bmap.c:230! RIP: vxfs_bmap_typed fs/freevxfs/vxfs_bmap.c:230 [inline] vxfs_bmap1+0x128a/0x12d0 fs/freevxfs/vxfs_bmap.c:257 Replace the BUG() with WARN_ON_ONCE() and return 0 -- the value vxfs_bmap_typed() already returns on failure (and from the DEV4 case above); vxfs_getblk() maps 0 to -EIO, so the ioctl fails cleanly.

Vendor linux
Product linux
Ecosystems
Industries
Technology
Published Oct 23, 2026
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Affected Versions

Linux / Linux
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < fe40a19d571cbb584eea46038ee919d8712b2d2c 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 500e9d5bf9eff2096a21b7ac25a0a06ca46ab821 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < f1f2d54a576f0e4133b979e545abcfefd439c300 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 7ada9807e37103b41f586d34e3075e1209182b65 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 1284d687d46953fff9c0d969df108114611aca8b 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 405f13d7b270913e06e8e2b4de568985f94ef7d6 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 704d48d81dc41470e108811c32c577ada66192d4 0 < 5.10.271 0 < 5.15.222 0 < 6.1.189 0 < 6.6.158 0 < 6.12.111 0 < 6.18.53
Linux / Linux
All versions affected

References

NVD ↗ CVE.org ↗ EPSS Data ↗
git.kernel.org: https://git.kernel.org/stable/c/fe40a19d571cbb584eea46038ee919d8712b2d2c git.kernel.org: https://git.kernel.org/stable/c/500e9d5bf9eff2096a21b7ac25a0a06ca46ab821 git.kernel.org: https://git.kernel.org/stable/c/f1f2d54a576f0e4133b979e545abcfefd439c300 git.kernel.org: https://git.kernel.org/stable/c/7ada9807e37103b41f586d34e3075e1209182b65 git.kernel.org: https://git.kernel.org/stable/c/1284d687d46953fff9c0d969df108114611aca8b git.kernel.org: https://git.kernel.org/stable/c/405f13d7b270913e06e8e2b4de568985f94ef7d6 git.kernel.org: https://git.kernel.org/stable/c/704d48d81dc41470e108811c32c577ada66192d4