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.
Fix
Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.
Change history 1
- First seenCVSS 5.5 · linux, redhat, fedoraprojectNVD modified 2026-10-26 18:17
Affected (CPE criteria) 10
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.4:rc1:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.4:rc2:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.4:rc3:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.4:rc4:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.4:rc5:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.4:rc6:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*
References 12
- 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/[email protected]/ Mailing List
- 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/[email protected]/ Mailing List