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.
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cve-icon 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

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cve-icon 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

cve-icon Redhat Information

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