CVE-2024-0443
MEDIUM
MEDIUM
Priority: 0.01
BB Relevance:
36/100
Published: 2024-01-11
Modified: 2026-10-26
First seen: 2026-10-29
Status: active
Attack Surface
Low Complexity
No Interaction
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
Low
UI:
None
S:
Unchanged
C:
None
I:
None
A:
High
Description
A flaw was found in the blkgs destruction path in block/blk-cgroup.c in the Linux kernel, leading to a cgroup blkio memory leakage problem. When a cgroup is being destroyed, cgroup_rstat_flush() is only called at css_release_work_fn(), which is called when the blkcg reference count reaches 0. This circular dependency will prevent blkcg and some blkgs from being freed after they are made offline. This issue may allow an attacker with a local access to cause system instability, such as an out of memory error.
Affected Software (10)
| Vendor | Product | Version |
|---|---|---|
| fedoraproject | fedora | 39 |
| linux | linux_kernel | 6.2 – 6.4 |
| linux | linux_kernel | 6.4 |
| linux | linux_kernel | 6.4 |
| linux | linux_kernel | 6.4 |
| linux | linux_kernel | 6.4 |
| linux | linux_kernel | 6.4 |
| linux | linux_kernel | 6.4 |
| redhat | enterprise_linux | 8.0 |
| redhat | enterprise_linux | 9.0 |
References & Advisories (6)
Third Party Advisory
Third Party Advisory
Mailing List
Issue Tracking
Third Party Advisory