{"apiVersion":"1.0","identifier":"CVE-2026-72478","description":"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","publishedAt":"2026-08-15T06:22:21","lastModifiedAt":"2026-08-17T06:19:15","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-72478","cvssScore":8.4,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","epssProbability":0.00152,"riskScore":0.85,"affectedProduct":"linux","affectedVersions":"unknown","vulnerabilityType":"Kernel","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-72478","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-72478","en":"https://www.redsauce.net/en/cves/CVE-2026-72478","fr":"https://www.redsauce.net/fr/cves/CVE-2026-72478","pt":"https://www.redsauce.net/pt/cves/CVE-2026-72478","de":"https://www.redsauce.net/de/cves/CVE-2026-72478","sk":"https://www.redsauce.net/sk/cves/CVE-2026-72478","el":"https://www.redsauce.net/el/cves/CVE-2026-72478"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-72478"}}