PT-2025-37602 · Linux+3 · Linux Kernel+3

CVE-2022-50300 · Published 2022-11-23 · Updated 2026-04-17

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The Linux kernel contains a flaw within the btrfs subsystem related to extent map handling during read operations. Specifically, a use-after-free condition can occur when processing a chunk stored on a missing device, particularly when the degraded mount option is absent. This issue arises from freeing the extent map without first storing the error code, potentially leading to memory corruption.

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

Exploit

Use After Free

Weakness Enumeration

CWE-911

CWE-416

Related Identifiers

BDU:2026-08822

CVE-2022-50300

OESA-2026-1950

Affected Products

Astra Linux

Debian

Linux Kernel

Btrfs

References · 40

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50300.json · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-23269 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-50300 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2026-1950 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-31408 · Security Note
• https://git.kernel.org/stable/c/169a4cf46882974d4db6d85eb623ec898e51bbc0 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2022-50518 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2022-50300 · Vendor Advisory
• https://git.kernel.org/stable/c/b8e7ed42bc3ca0d0e4191ee394d34962d3624c22 · Patch
• https://ubuntu.com/security/CVE-2022-50300 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-23389 · Security Note
• https://git.kernel.org/stable/c/fce3713197ebba239e1c7e02174ed216ea1ee014 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-23410 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-23253 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-23408 · Security Note