Answer in brief
CVE-2026-72478 records a High severity (CVSS 8.4) vulnerability in fs/ntfs3: add bounds check to run_get_highest_vcn(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), 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.
CVSS is 8.4. 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), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=425de2aba0d061b3e715d51a3b1992c112ed5b99 <c69b9003332917b652175d5fa9d84158c5ed8617 || >=bf7ac4a1d3bfc6e56e54635c3d331a68170d37c9 <8afc24a884aff6a6f08028bd779ee65c40054455 || >=e64f7dfcaff79e7dfff9121a382dd77f9b462f62 <c23083b472a720c3f60b147db05b25b751c7c1bf || >=d3012690a7065d9ca86521a525ad11e8af491d45 <a31893206588374d7d16fad387189d8165c7efd3 || >=b62567bca47408e6739dee75f02a2113548af875 <41081202eb823f5b27ff164b12010b24428100ad || >=b62567bca47408e6739dee75f02a2113548af875 <bb11485a87fbb2254b62cfed630b699d50e57da8 || bbad75336870b51b81979b97613746237fcb02fe || 41aadf5cb482793a24e05aa136224e179a778586 || >=6.1.175 <6.1.178 || >=6.6.140 <6.6.145 || >=6.12.86 <6.12.97 || >=6.18.27 <6.18.40 || >=5.15.209 <5.16 || >=7.0.4 <7.1 | c69b9003332917b652175d5fa9d84158c5ed8617, 8afc24a884aff6a6f08028bd779ee65c40054455, c23083b472a720c3f60b147db05b25b751c7c1bf, a31893206588374d7d16fad387189d8165c7efd3, 41081202eb823f5b27ff164b12010b24428100ad, bb11485a87fbb2254b62cfed630b699d50e57da8, 6.1.178, 6.6.145, 6.12.97, 6.18.40, 5.16, 7.1 |
| Linux/Linuxgeneric | 7.1 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: add bounds check to run_get_highest_vcn() run_get_highest_vcn() parses a packed NTFS mapping-pairs buffer without any length bound, relying solely on a 0x00 terminator to stop. A crafted $LogFile UpdateMappingPairs record whose embedded attribute contains mapping-pairs runs without a terminator causes the function to read past the slab allocation, triggering a KASAN slab-out-of-bounds read on mount. The sibling function run_unpack() received an analogous bounds-check in commit b62567bca474 ("ntfs3: add buffer boundary checks to run_unpack()"), but run_get_highest_vcn() was missed. Take a run_buf_size parameter and reject any run header whose payload would extend past the buffer end, mirroring the pattern used by run_unpack(). The caller in fslog.c passes the remaining attribute bytes after the mapping-pairs offset. KASAN report (on mainline v7.1 merge window HEAD): BUG: KASAN: slab-out-of-bounds in run_get_highest_vcn+0x3c0/0x410 Read of size 1 at addr ffff88800e2d5400 by task mount/72 Call Trace: run_get_highest_vcn+0x3c0/0x410 do_action.isra.0+0x3ba8/0x7b50 log_replay+0x9ddd/0x10200 ntfs_loadlog_and_replay+0x4ad/0x610 ntfs_fill_super+0x214a/0x4540
Quoted source text, attributed separately from HOL analysis.