Answer in brief
CVE-2026-98872 records a Unknown severity vulnerability in freevxfs: don't BUG() on unknown typed-extent type. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=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 | fe40a19d571cbb584eea46038ee919d8712b2d2c, 500e9d5bf9eff2096a21b7ac25a0a06ca46ab821, f1f2d54a576f0e4133b979e545abcfefd439c300, 7ada9807e37103b41f586d34e3075e1209182b65, 1284d687d46953fff9c0d969df108114611aca8b, 405f13d7b270913e06e8e2b4de568985f94ef7d6, 704d48d81dc41470e108811c32c577ada66192d4, 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.111, 6.18.53 |
Published upstream
Oct 23, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 23, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 23, 2026
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.
Quoted source text, attributed separately from HOL analysis.