CVE-2026-46072ntfs3: add buffer boundary checks to run_unpack()
- 5.5MediumCVSS base score
- 0.12%Exploitation in 30 daysEPSS · top 98% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: ntfs3: add buffer boundary checks to run_unpack() run_unpack() checks `run_buf < run_last` at the top of the while loop but then reads size_size and offset_size bytes via run_unpack_s64() without verifying they fit within the remaining buffer. A crafted NTFS image with truncated run data in an MFT attribute triggers an OOB heap read of up to 15 bytes when the filesystem is mounted. Add boundary checks before each run_unpack_s64() call to ensure the declared field size does not exceed the remaining buffer. Found by fuzzing with a source-patched harness (LibAFL + QEMU).
Timeline
ID reserved
By Linux
- 14 days later
· 14 days later
Published
- 18 days later
· 18 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Undergoing Analysis | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.12% · top 98% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 82cae269cfa953032fbb8980a7d554d60fb00b17 – < bbad75336870b51b81979b97613746237fcb02fe
- affected 82cae269cfa953032fbb8980a7d554d60fb00b17 – < 425de2aba0d061b3e715d51a3b1992c112ed5b99
- affected 82cae269cfa953032fbb8980a7d554d60fb00b17 – < bf7ac4a1d3bfc6e56e54635c3d331a68170d37c9
- affected 82cae269cfa953032fbb8980a7d554d60fb00b17 – < e64f7dfcaff79e7dfff9121a382dd77f9b462f62
- affected 82cae269cfa953032fbb8980a7d554d60fb00b17 – < d3012690a7065d9ca86521a525ad11e8af491d45
- affected 82cae269cfa953032fbb8980a7d554d60fb00b17 – < 41aadf5cb482793a24e05aa136224e179a778586
- affected 82cae269cfa953032fbb8980a7d554d60fb00b17 – < b62567bca47408e6739dee75f02a2113548af875
- affected 5.15
- unaffected < 5.15
- unaffected 5.15.209 – ≤ 5.15.*
- unaffected 6.1.175 – ≤ 6.1.*
- unaffected 6.6.140 – ≤ 6.6.*
- unaffected 6.12.86 – ≤ 6.12.*
- unaffected 6.18.27 – ≤ 6.18.*
- unaffected 7.0.4 – ≤ 7.0.*
- unaffected 7.1 – ≤ *
References
References7
- https://git.kernel.org/stable/c/bbad75336870b51b81979b97613746237fcb02fe (opens in a new tab)
- https://git.kernel.org/stable/c/425de2aba0d061b3e715d51a3b1992c112ed5b99 (opens in a new tab)
- https://git.kernel.org/stable/c/bf7ac4a1d3bfc6e56e54635c3d331a68170d37c9 (opens in a new tab)
- https://git.kernel.org/stable/c/e64f7dfcaff79e7dfff9121a382dd77f9b462f62 (opens in a new tab)
- https://git.kernel.org/stable/c/d3012690a7065d9ca86521a525ad11e8af491d45 (opens in a new tab)
- https://git.kernel.org/stable/c/41aadf5cb482793a24e05aa136224e179a778586 (opens in a new tab)
- https://git.kernel.org/stable/c/b62567bca47408e6739dee75f02a2113548af875 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-32454 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-46072)Record last updated .