PT-2025-49623 · Linux+1 · Linux Kernel+1

Published 2025-12-09 · Updated 2026-02-24 · CVE-2022-50643

Positive Technologies (AI Summary)

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

Description A flaw exists in the Linux kernel’s Common Internet File System (CIFS) implementation within the cifs copy file range() function. Specifically, a transaction ID (xid) leak can occur when a file is used by swap. If the file is in use by swap, the function should free the xid before returning an error, but it fails to do so, resulting in a leaked xid.

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

Exploit

Related Identifiers

CVE-2022-50643

RHSA-2023:6583

SUSE-SU-2026:0263-1

SUSE-SU-2026:0316-1

SUSE-SU-2026:0317-1

SUSE-SU-2026:0411-1

SUSE-SU-2026:0617-1

Affected Products

Linux Kernel

Red Hat

References · 1105

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50643.json · Exploit
• https://osv.dev/vulnerability/CVE-2022-50643 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2022-50643 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0317-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-50643 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0316-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-50643 · Security Note
• https://cve.org/CVERecord?id=CVE-2022-50643 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-50643 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-50643 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0617-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0411-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0263-1 · Vendor Advisory
• https://bugzilla.suse.com/1255996 · Note
• https://suse.com/security/cve/CVE-2023-54118 · Note