PT-2025-8209 · Linux+4 · Linux Kernel+4

Published 2022-01-01 · Updated 2026-03-14 · CVE-2022-49281

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

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

Description A vulnerability in the Linux kernel has been resolved, related to the handling of multiuser connections to a CIFS share. When unmounting such a share, the kernel must release the pinned down dentry for each individual user's tcon structure to avoid warnings about dentries still in use. The issue arises from the failure to properly release these dentries, leading to errors during the unmount process.

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

Exploit

Infinite Loop

Weakness Enumeration

CWE-835

Related Identifiers

ALSA-2025_16880

BDU:2026-02210

CVE-2022-49281

OPENSUSE-SU-2025_1263-1

RHSA-2022:7318

RHSA-2022:8267

RHSA-2022_7318

RHSA-2022_8267

SUSE-SU-2025:1027-1

SUSE-SU-2025:1176-1

SUSE-SU-2025:1183-1

SUSE-SU-2025:1194-1

SUSE-SU-2025:1241-1

SUSE-SU-2025:1263-1

SUSE-SU-2025:1293-1

SUSE-SU-2025_1027-1

SUSE-SU-2025_1241-1

SUSE-SU-2025_1263-1

SUSE-SU-2025_1293-1

Affected Products

Astra Linux

Debian

Linux Kernel

Red Hat

Suse

References · 1499

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49281.json · Exploit
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-11-CVE-2022-49281 · Vendor Advisory
• https://git.kernel.org/stable/c/2fafbc198613823943c106d1ec9b516da692059f · Patch
• https://security-tracker.debian.org/tracker/CVE-2022-49281 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-02210 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2025:1183-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-49281 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-49281 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2025:1293-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:1176-1 · Vendor Advisory
• https://git.kernel.org/stable/c/e71f6a3a1d5c826a30384fec587ca7503ef6bde5 · Patch
• https://git.kernel.org/stable/c/ffa631c4bff59dde59b598011f570e27dfba3515 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:1194-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:1241-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:1027-1 · Vendor Advisory