PT-2025-18548 · Linux+2 · Linux Kernel+2

Published 2022-11-07 · Updated 2026-03-14 · CVE-2022-49831

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 issue in the Linux kernel has been resolved. The problem occurs when performing seeding on a zoned filesystem, where it is necessary to initialize each zoned device's btrfs zoned device info structure. Failure to do so results in a NULL pointer dereference when mounting the filesystem. This issue was discovered by fstests' testcase btrfs/163.

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

Exploit

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

BDU:2026-02636

CVE-2022-49831

Affected Products

Astra Linux

Debian

Linux Kernel

References · 18

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49831.json · Exploit
• https://security-tracker.debian.org/tracker/CVE-2022-49831 · Vendor Advisory
• https://git.kernel.org/stable/c/544f38a738343d7e75f104e5e9d1ade58d8b71bd · Patch
• https://git.kernel.org/stable/c/a8d1b1647bf8244a5f270538e9e636e2657fffa3 · Patch
• https://ubuntu.com/security/CVE-2022-49831 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-49831 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-02636 · Security Note
• https://git.kernel.org/stable/c/91c38504e589dadbcde47b1cacdfc5b684154d44 · Patch
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-11-CVE-2022-49831 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-49831 · Security Note
• https://cve.org/CVERecord?id=CVE-2022-49831 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-49831 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-49831 · Vendor Advisory
• https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.79 · Note
• https://kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0.9 · Note