PT-2025-8362 · Linux+2 · Linux Kernel+2

Wenqing Liu · Published 2022-01-01 · Updated 2026-03-14 · CVE-2022-49428

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 identified, which can cause a kernel panic. The issue arises when the inline dots flag is set in a special file, such as a character, block, FIFO, or socket file, and the f2fs filesystem attempts to recover dot dentries. This can lead to a NULL pointer access when f2fs add regular entry() calls a ops->set dirty page(). The vulnerability can be triggered by creating a directory, mounting a fuzzed image, and listing the directory contents.

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

Exploit

NULL Pointer Dereference

Improper Resource Release

Weakness Enumeration

CWE-476

CWE-404

Related Identifiers

BDU:2026-04029

CVE-2022-49428

Affected Products

Astra Linux

Debian

Linux Kernel

References · 21

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49428.json · Exploit
• https://git.kernel.org/stable/c/34f48ce5d5936eea33e3b6415403e57eb84aff97 · Patch
• https://git.kernel.org/stable/c/2f46160d0a19b13bfe96c0dd50eed5c5d253ab7a · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2022-49428 · Security Note
• https://cve.org/CVERecord?id=CVE-2022-49428 · Security Note
• https://git.kernel.org/stable/c/250e5a6be52a6b9d82fe91976c83cc158868b4e9 · Patch
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-11-CVE-2022-49428 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-49428 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-49428 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-04029 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2022-49428 · Vendor Advisory
• https://git.kernel.org/stable/c/12662d19467b391b5b509ac5e9ab4f583c6dde16 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-49428 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-49428 · Vendor Advisory
• https://twitter.com/CVEnew/status/1895982025783591008 · Twitter Post