PT-2025-13285 · Linux+3 · Linux Kernel+3

Published 2022-02-24 · Updated 2026-03-14 · CVE-2022-49743

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 (affected versions not specified)

Description A vulnerability in the Linux kernel has been resolved. The issue involved the use of a flexible array in the ovl component, which required adjustment to avoid false positive run-time warnings from the FORTIFY SOURCE hardening. Specifically, the buf flexible array needed to be the destination for memcpy() to prevent a field-spanning write warning. The warning was related to the fs/overlayfs/export.c file at line 799.

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

Exploit

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2025-06212

CVE-2022-49743

Affected Products

Astra Linux

Debian

Linux Kernel

Red Os

References · 22

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49743.json · Exploit
• https://git.kernel.org/stable/c/cf8aa9bf97cadf85745506c6a3e244b22c268d63 · Patch
• https://osv.dev/vulnerability/CVE-2022-49743 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-49743 · Vendor Advisory
• https://git.kernel.org/stable/c/07a96977b2f462337a9121302de64277b8747ab1 · Patch
• https://security-tracker.debian.org/tracker/CVE-2022-49743 · Vendor Advisory
• https://git.kernel.org/stable/c/a77141a06367825d639ac51b04703d551163e36c · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-49743 · Vendor Advisory
• http://repo.red-soft.ru/redos/7.3c/x86_64/updates · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-11-CVE-2022-49743 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-49743 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-06212 · Security Note
• https://cve.org/CVERecord?id=CVE-2022-49743 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2022-49743 · Security Note
• https://git.kernel.org/stable/c/012cdef22000f3104e4fa8224ad29fde509b8caf · Note