PT-2025-43081 · Btrfs+3 · Btrfs+3

Published 2025-10-22 · Updated 2026-05-26 · CVE-2022-50571

Positive Technologies (AI Summary)

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 5.19.0-rc8+

Description The Linux kernel contains an issue within the Btrfs file system related to handling free space cache loading failures. Specifically, when an error occurs during cache loading, the btrfs discard update discardable function is called, which requires a lock (block group->free space ctl->tree lock) that is not held by the temporary free space control structure. This can lead to potential issues with discardable statistics. The resolution involves calling btrfs remove free space cache locked instead to ensure proper cleanup without affecting the discardable stats.

Recommendations Update to a version of the Linux kernel that includes the fix for this issue.

Exploit

Related Identifiers

CVE-2022-50571

SUSE-SU-2025:4189-1

Affected Products

Btrfs

Debian

Linux Kernel

Suse

References · 301

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50571.json · Exploit
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2204-CVE-2022-50571 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-50571 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2025:4189-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2022-50571 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-50571 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-50571 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-50571 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-50571 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2022-50571 · Vendor Advisory
• https://suse.com/security/cve/CVE-2023-53695 · Note
• https://bugzilla.suse.com/1249161 · Note
• https://bugzilla.suse.com/1251052 · Note
• https://bugzilla.suse.com/1251132 · Note
• https://suse.com/security/cve/CVE-2023-53548 · Note