PT-2025-53109 · Linux · Linux Kernel

Published 2025-12-24 · Updated 2025-12-25 · CVE-2022-50743

Positive Technologies (AI Summary)

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

Description The Linux kernel contains a memory leak in the erofs filesystem related to pcluster objects. Specifically, the issue occurs when a pcluster is registered with a zero block address, which is illegal for non-inlined pclusters. This can lead to a memory leak as the reference count for a workgroup is added but not released. The issue was identified through syzkaller testing and affects the z erofs do read page, z erofs readahead, and erofs workgroup get functions.

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

Exploit

Related Identifiers

CVE-2022-50743

RHSA-2025:6966

Affected Products

Linux Kernel

References · 14

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50743.json · Exploit
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-50743 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-50743 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2022-50743 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-50743 · Security Note
• https://ubuntu.com/security/CVE-2022-50743 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2022-50743 · Security Note
• https://osv.dev/vulnerability/CVE-2022-50743 · Vendor Advisory
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note
• https://git.kernel.org/stable/c/ac54c1f7b288d83b6ba1e320efff24ecc21309cd · Note
• https://git.kernel.org/stable/c/c42c0ffe81176940bd5dead474216b7198d77675 · Note
• https://twitter.com/CVEnew/status/2004294913551200440 · Twitter Post
• https://lore.kernel.org/linux-cve-announce/2025122449-CVE-2022-50743-8e63@gregkh/T · Note
• https://git.kernel.org/stable/c/618e712b99c78d1004b70a1a9ab0a4830d0b2673 · Note