CVE-2026-46072In 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 re…
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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).
- CVSS
- 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Undergoing Analysis
- Record last updated
- Jun 24, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
linux linux_kernel linux:linux_kernel | from 5.15 before 5.15.209; from 5.16 before 6.1.175; from 6.2 before 6.6.140; from 6.7 before 6.12.86; from 6.13 before 6.18.27; from 6.19 before 7.0.4 | NVD |
References
- https://git.kernel.org/stable/c/41aadf5cb482793a24e05aa136224e179a778586patch
- https://git.kernel.org/stable/c/425de2aba0d061b3e715d51a3b1992c112ed5b99patch
- https://git.kernel.org/stable/c/b62567bca47408e6739dee75f02a2113548af875patch
- https://git.kernel.org/stable/c/bbad75336870b51b81979b97613746237fcb02fepatch
- https://git.kernel.org/stable/c/bf7ac4a1d3bfc6e56e54635c3d331a68170d37c9patch
- https://git.kernel.org/stable/c/d3012690a7065d9ca86521a525ad11e8af491d45patch
- https://git.kernel.org/stable/c/e64f7dfcaff79e7dfff9121a382dd77f9b462f62patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.