CVE-2022-49786

5.5 MEDIUM 0.2% exploit odds Fix listed Other OS & kernel

What it is

In the Linux kernel, the following vulnerability has been resolved: blk-cgroup: properly pin the parent in blkcg_css_online blkcg_css_online is supposed to pin the blkcg of the parent, but 397c9f46ee4d refactored things and along the way, changed it to pin the css instead. This results in extra pins, and we end up leaking blkcgs and cgroups.

At a glance

Exploitability: Can be exploited locally on the machine with a low-privilege account. High risk of service disruption.
Exploit odds: 0.2% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2025-05-01 15:16 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-11-05 20:17 UTC Last updatedMost recent change to the record

Details

Published: 2025-05-01 15:16 UTC
Last modified: 2026-11-05 20:17 UTC
Exploit probability: 0.2% · EPSS, next 30 days
Record status: Analyzed

Affected

Linux Kernel < 6.0.10
Linux Kernel 6.1

Attack profile CVSS 3.1 · 5.5

Attack vector: Local
Complexity: Low
Privileges needed: Low
User interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: None
Availability: High

Raw vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Download Square Reddit

Fix and advisories

References

NVD record · CVE.org record