PT-2025-8277 · Linux+4 · Linux Kernel+4

Jan Kara · Published 2022-05-24 · Updated 2025-04-16 · CVE-2022-49343

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 maliciously corrupted filesystem can contain cycles in the h-tree stored inside a directory, potentially leading to the kernel corrupting tree nodes and accessing unallocated memory. The issue arises when the kernel does a node split and traverses block numbers that are not unique.

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

Exploit

Allocation of Resources Without Limits

Weakness Enumeration

CWE-770

Related Identifiers

BDU:2026-02217

CESA-2022_7683

CVE-2022-49343

OPENSUSE-SU-2025_1263-1

RHSA-2022:7683

RHSA-2022:8267

RHSA-2022_7683

RHSA-2022_8267

SUSE-SU-2025:1027-1

SUSE-SU-2025:1176-1

SUSE-SU-2025:1183-1

SUSE-SU-2025:1194-1

SUSE-SU-2025:1241-1

SUSE-SU-2025:1263-1

SUSE-SU-2025:1293-1

SUSE-SU-2025_1027-1

SUSE-SU-2025_1241-1

SUSE-SU-2025_1263-1

SUSE-SU-2025_1293-1

Affected Products

Astra Linux

Centos

Linux Kernel

Red Hat

Suse

References · 1506

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49343.json · Exploit
• https://bdu.fstec.ru/vul/2026-02217 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2022-49343 · Vendor Advisory
• https://git.kernel.org/stable/c/e157c8f87e8fac112d6c955e69a60cdb9bc80a60 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:1183-1 · Vendor Advisory
• https://git.kernel.org/stable/c/6084240bfc44bf265ab6ae7d96980469b05be0f1 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:1293-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:1176-1 · Vendor Advisory
• https://git.kernel.org/stable/c/ff4cafa51762da3824881a9000ca421d4b78b138 · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-49343 · Vendor Advisory
• https://git.kernel.org/stable/c/d5a16a6df2c16eaf4de04948553ef0089dee463f · Patch
• https://ubuntu.com/security/CVE-2022-49343 · Vendor Advisory
• https://git.kernel.org/stable/c/3ba733f879c2a88910744647e41edeefbc0d92b2 · Patch
• https://git.kernel.org/stable/c/b3ad9ff6f06c1dc6abf7437691c88ca3d6da3ac0 · Patch
• https://git.kernel.org/stable/c/24b8206fec1db21d7e82f21f0b2ff5e5672cf5b3 · Patch