PT-2025-8224 · Linux+2 · Linux Kernel+2

Xiubo Li · Published 2022-01-01 · Updated 2026-05-26 · CVE-2022-49296

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 potential deadlock issue has been identified in the Linux kernel related to the Ceph file system. The issue occurs when a file is created with O RDWR and a request is sent to the metadata server (mds). The ceph atomic open() function calls ceph mdsc do request(openc), which can lead to a deadlock when the kernel client holds the Fwb caps and waits for a getattr(Fsr) request. This happens because the ceph netfs issue op inline() function sends a getattr(Fsr) request to mds, which then requests the rd lock for CInode::filelock from the auth mds, causing a state transition from excl to sync. However, this transition requires revoking the Fxwb caps back from the clients, leading to a deadlock.

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

Exploit

Improper Locking

Weakness Enumeration

CWE-667

Related Identifiers

AZL-60327

CVE-2022-49296

SUSE-SU-2025:1176-1

SUSE-SU-2025:1241-1

SUSE-SU-2025_1241-1

Affected Products

Debian

Linux Kernel

Suse

References · 1301

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49296.json · Exploit
• https://security-tracker.debian.org/tracker/CVE-2022-49296 · Vendor Advisory
• https://osv.dev/vulnerability/AZL-60327 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-49296 · Security Note
• https://git.kernel.org/stable/c/292b7a7275ce535a1abfa4dd0b2e586162aaae1e · Patch
• https://cve.org/CVERecord?id=CVE-2022-49296 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-49296 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2204-CVE-2022-49296 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:1176-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-49296 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-11-CVE-2022-49296 · Vendor Advisory
• https://git.kernel.org/stable/c/825978fd6a0defc3c29d8a38b6cea76a0938d21e · Patch
• https://ubuntu.com/security/CVE-2022-49296 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:1241-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-49296 · Vendor Advisory