What is CVE-2022-49786?

CVE-2022-49786 is a medium-severity vulnerability in Linux. CVSS score: 5.5/10. Published 2025-05-01.

How severe is CVE-2022-49786?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Linux

CVE-2022-49786

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.

EPSS: 0.001 (4.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Linux — versions 397c9f46ee4d99024c64954b007c1b5762d01cb4, 5.19, 0
Linux Linux_kernel — versions 6.1

References

416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)

Frequently asked questions

What is CVE-2022-49786?: CVE-2022-49786 is a medium-severity vulnerability in Linux. CVSS score: 5.5/10. Published 2025-05-01.
How severe is CVE-2022-49786?: Medium severity. CVSS v3 base score is 5.5 out of 10.