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.
References
Link | Resource |
---|---|
https://access.redhat.com/errata/RHSA-2023:6583 | |
https://access.redhat.com/errata/RHSA-2023:7077 | Third Party Advisory |
https://access.redhat.com/errata/RHSA-2023:7370 | |
https://access.redhat.com/security/cve/CVE-2024-0443 | Third Party Advisory |
https://bugzilla.redhat.com/show_bug.cgi?id=2257968 | Issue Tracking Third Party Advisory |
https://lore.kernel.org/linux-block/20221215033132.230023-3-longman@redhat.com/ | Mailing List |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: redhat
Published: 2024-01-11T23:30:52.291Z
Updated: 2024-05-20T10:22:20.763Z
Reserved: 2024-01-11T20:41:30.877Z
Link: CVE-2024-0443
JSON object: View
NVD Information
Status : Modified
Published: 2024-01-12T00:15:45.230
Modified: 2024-05-20T11:15:08.403
Link: CVE-2024-0443
JSON object: View
Redhat Information
No data.