PT-2026-26102 · Linux · Linux Kernel

Jiaming Zhang · Published 2026-01-01 · Updated 2026-06-01 · CVE-2026-23252

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel versions 6.6 through 6.14

Description The Linux kernel contains an issue where the xchk xfile * descr macros utilize kasprintf, which may fail to allocate memory if the resulting formatted string exceeds a certain length. This can occur because the formatted strings can exceed the memory allocation limits. The issue was identified through fuzzing with syzbot. The xchk xfile * descr macros are used for debugging purposes and are not essential for functionality.

Recommendations Versions 6.6 through 6.14 should be updated to a later version that addresses this issue.

Exploit

Fix

Buffer Overflow

Weakness Enumeration

CWE-805

CWE-119

Related Identifiers

BDU:2026-03486

CVE-2026-23252

Affected Products

Linux Kernel

References · 22

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23252.json · Exploit
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-23252 · Vendor Advisory
• https://git.kernel.org/stable/c/60382993a2e18041f88c7969f567f168cd3b4de3 · Patch
• https://git.kernel.org/stable/c/2d8afee89262762fe0e5547772708c75f320c957 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-23252 · Security Note
• https://bdu.fstec.ru/vul/2026-03486 · Security Note
• https://cve.org/CVERecord?id=CVE-2026-23252 · Security Note
• https://git.kernel.org/stable/c/695455fbc49053cbf555f2f302a5dcd600f412ff · Patch
• https://osv.dev/vulnerability/CVE-2026-23252 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-23252 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-23252 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-23252 · Vendor Advisory
• https://git.kernel.org/stable/c/18e9cf2259b4157fd282b323514375f2f6a59edb · Patch
• https://osv.dev/vulnerability/BELL-CVE-2026-23252 · Vendor Advisory
• https://twitter.com/CVEnew/status/2034365270266159381 · Twitter Post