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

CVE-2022-50643 · Published 2022-10-17 · Updated 2026-02-24

Positive Technologies (AI Summary)

CVSS v2.0

4.6

Medium

Base vector

AV:L/AC:L/Au:S/C:N/I:N/A:C

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

Missing Release of Resource after Effective Lifetime

Weakness Enumeration

CWE-772

Related Identifiers

BDU:2026-10571

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 · 1111

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50643.json · Exploit
• https://bdu.fstec.ru/vul/2026-10571 · Security Note
• https://cve.org/CVERecord?id=CVE-2022-50643 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2026:0411-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-50643 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-50643 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0617-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2022-50643 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0263-1 · 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://ubuntu.com/security/CVE-2022-50643 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-50643 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0317-1 · Vendor Advisory
• https://suse.com/security/cve/CVE-2023-53254 · Note