PT-2026-36346 · Linux · Linux Kernel

Published 2026-05-01 · Updated 2026-05-26 · CVE-2026-31716

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A buffer overflow exists in the NTFS3 driver during journal-replay file record checks. The check file record() function validates rec->total against the record size but fails to validate rec->used. Consequently, journal-replay handlers in do action() use rec->used to calculate memmove() lengths. If rec->used is larger than the record size or smaller than the offset of a validated attribute, subtractions can underflow, leading to excessive memory being copied into a 4kb buffer.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2026-31716

ECHO-7820-2C2B-D208

OPENSUSE-SU-2026:10793-1

Affected Products

Linux Kernel

References · 55

• https://osv.dev/vulnerability/BELL-CVE-2026-31716 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-31716 · Security Note
• https://cve.org/CVERecord?id=CVE-2026-31716 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-31716 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:10793-1 · Vendor Advisory
• https://git.kernel.org/stable/c/0ca0485e4b2e837ebb6cbd4f2451aba665a03e4b · Patch
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2204-CVE-2026-31716 · Vendor Advisory
• https://git.kernel.org/stable/c/0112e6279420d4005b3d57af36fb45c01b8d0116 · Patch
• https://ubuntu.com/security/CVE-2026-31716 · Vendor Advisory
• https://git.kernel.org/stable/c/4b1613d7e2deda831a97e427d1ea586e50fe1be5 · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-31716 · Vendor Advisory
• https://git.kernel.org/stable/c/f90b8a1798b750755a9e9aee66678f0a1820bbaf · Patch
• https://security-tracker.debian.org/tracker/CVE-2026-31716 · Vendor Advisory
• https://git.kernel.org/stable/c/f79d0403ea20a81bc29105bba54fbcab54e8c403 · Patch
• https://docs.bell-sw.com/security/cves/CVE-2026-31716 · Note