CVE-2026-46072

ntfs3: add buffer boundary checks to run_unpack()

State: Published
Severity: Not scored
Published: May 27, 2026
Updated: Jun 14, 2026
Reserved: May 13, 2026

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).

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	82cae269cfa953032fbb8980a7d554d60fb00b17 to before bbad75336870b51b81979b97613746237fcb02feAffected 82cae269cfa953032fbb8980a7d554d60fb00b17 to before 425de2aba0d061b3e715d51a3b1992c112ed5b99Affected 82cae269cfa953032fbb8980a7d554d60fb00b17 to before bf7ac4a1d3bfc6e56e54635c3d331a68170d37c9Affected 82cae269cfa953032fbb8980a7d554d60fb00b17 to before e64f7dfcaff79e7dfff9121a382dd77f9b462f62Affected 82cae269cfa953032fbb8980a7d554d60fb00b17 to before d3012690a7065d9ca86521a525ad11e8af491d45Affected 82cae269cfa953032fbb8980a7d554d60fb00b17 to before 41aadf5cb482793a24e05aa136224e179a778586Affected 82cae269cfa953032fbb8980a7d554d60fb00b17 to before b62567bca47408e6739dee75f02a2113548af875Affected
LinuxLinux	5.15Affected before 5.15Not affected 5.15.209 through 5.15.Not affected 6.1.175 through 6.1.Not affected 6.6.140 through 6.6.Not affected 6.12.86 through 6.12.Not affected 6.18.27 through 6.18.Not affected 7.0.4 through 7.0.Not affected 7.1 and laterNot affected

Product

Versions

LinuxLinux

82cae269cfa953032fbb8980a7d554d60fb00b17 to before bbad75336870b51b81979b97613746237fcb02feAffected
82cae269cfa953032fbb8980a7d554d60fb00b17 to before 425de2aba0d061b3e715d51a3b1992c112ed5b99Affected
82cae269cfa953032fbb8980a7d554d60fb00b17 to before bf7ac4a1d3bfc6e56e54635c3d331a68170d37c9Affected
82cae269cfa953032fbb8980a7d554d60fb00b17 to before e64f7dfcaff79e7dfff9121a382dd77f9b462f62Affected
82cae269cfa953032fbb8980a7d554d60fb00b17 to before d3012690a7065d9ca86521a525ad11e8af491d45Affected
82cae269cfa953032fbb8980a7d554d60fb00b17 to before 41aadf5cb482793a24e05aa136224e179a778586Affected
82cae269cfa953032fbb8980a7d554d60fb00b17 to before b62567bca47408e6739dee75f02a2113548af875Affected

LinuxLinux

5.15Affected
before 5.15Not affected
5.15.209 through 5.15.*Not affected
6.1.175 through 6.1.*Not affected
6.6.140 through 6.6.*Not affected
6.12.86 through 6.12.*Not affected
6.18.27 through 6.18.*Not affected
7.0.4 through 7.0.*Not affected
7.1 and laterNot affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.