PT-2025-18482 · Linux+2 · Linux Kernel+2

Published 2022-10-07 · Updated 2026-03-14 · CVE-2022-49765

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 has been resolved in the Linux kernel, specifically in the net/9p module. The issue involves inconsistent lock state in the p9 req put() function, which can be caused by the use of different locking mechanisms in the client.c and trans fd.c files. The client.c file uses spin lock irqsave() to protect the IDR for FID/tag allocations, while the trans fd.c file uses spin lock() to protect its own request list and request status field. To resolve this issue, a dedicated spinlock has been introduced for trans fd.

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

Exploit

Allocation of Resources Without Limits

Improper Locking

Weakness Enumeration

CWE-770

CWE-667

Related Identifiers

BDU:2026-02631

CVE-2022-49765

Affected Products

Astra Linux

Debian

Linux Kernel

References · 18

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49765.json · Exploit
• https://osv.dev/vulnerability/CVE-2022-49765 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-11-CVE-2022-49765 · Vendor Advisory
• https://git.kernel.org/stable/c/296ab4a813841ba1d5f40b03190fd1bd8f25aab0 · Patch
• https://git.kernel.org/stable/c/43bbadb7e4636dc02f6a283c2a39e6438e6173cd · Patch
• https://bdu.fstec.ru/vul/2026-02631 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-49765 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-49765 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-49765 · Vendor Advisory
• https://git.kernel.org/stable/c/717b9b4f38703d7f5293059e3a242d16f76fa045 · Patch
• https://security-tracker.debian.org/tracker/CVE-2022-49765 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2022-49765 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2022-49765 · Security Note
• https://twitter.com/CVEnew/status/1918014667621834819 · Twitter Post
• https://kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0.10 · Note