PT-2025-18550 · Linux+2 · Linux Kernel+2

Published 2022-11-07 · Updated 2026-04-20 · CVE-2022-49833

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, related to the btrfs filesystem. When cloning a btrfs device, the associated btrfs zoned device info structure is not cloned, leading to a NULL pointer dereference when accessing the device's zone info. This issue was discovered by the btrfs/161 testcase of fstests.

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

AZL-69917

BDU:2026-04903

CVE-2022-49833

Affected Products

Astra Linux

Debian

Linux Kernel

References · 19

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49833.json · Exploit
• https://cve.org/CVERecord?id=CVE-2022-49833 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-49833 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-49833 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2204-CVE-2022-49833 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-49833 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2022-49833 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-49833 · Security Note
• https://git.kernel.org/stable/c/ad88cabcec942c033f980cd1e28d56ecdaf5f3b8 · Patch
• https://ubuntu.com/security/CVE-2022-49833 · Vendor Advisory
• https://osv.dev/vulnerability/AZL-69917 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-04903 · Security Note
• https://git.kernel.org/stable/c/21e61ec6d0bb786818490e926aa9aeb4de95ad0d · Patch
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note
• https://twitter.com/CVEnew/status/1917950889903751298 · Twitter Post