Kernel: blkio memory leakage due to blkcg and some blkgs are not freed after they are made offline.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
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| unaffected |
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| Red Hat | Red Hat Enterprise Linux 8 | affected |
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| Red Hat | Red Hat Enterprise Linux 9.2 Extended Update Support | affected |
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| Red Hat | Red Hat Enterprise Linux 6 | unaffected | — | ||||||
| Red Hat | Red Hat Enterprise Linux 7 | unaffected | — | ||||||
| Red Hat | Red Hat Enterprise Linux 7 | unaffected | — | ||||||
| Red Hat | Red Hat Enterprise Linux 8 | affected | — | ||||||
| Red Hat | Red Hat Enterprise Linux 9 | affected | — | ||||||
| Red Hat | Red Hat Enterprise Linux 9 | unaffected | — |
Configuration 1 [-]
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Configuration 2 [-]
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Configuration 3 [-]
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| Package | CPE | Advisory | Released Date |
|---|---|---|---|
| Red Hat Enterprise Linux 8 | |||
| kernel-0:4.18.0-513.5.1.el8_9 | cpe:/o:redhat:enterprise_linux:8 | RHSA-2023:7077 | 2023-11-14T00:00:00Z |
| Red Hat Enterprise Linux 9 | |||
| kernel-0:5.14.0-362.8.1.el9_3 | cpe:/a:redhat:enterprise_linux:9 | RHSA-2023:6583 | 2023-11-07T00:00:00Z |
| kernel-0:5.14.0-362.8.1.el9_3 | cpe:/o:redhat:enterprise_linux:9 | RHSA-2023:6583 | 2023-11-07T00:00:00Z |
| Red Hat Enterprise Linux 9.2 Extended Update Support | |||
| kernel-0:5.14.0-284.40.1.el9_2 | cpe:/a:redhat:rhel_eus:9.2 | RHSA-2023:7370 | 2023-11-21T00:00:00Z |
No data available yet.
Vendor Workaround
This flaw can be mitigated with the possible workaround identified below: - systemd.unified_cgroup_hierarchy=1 or - cgroup_disable=blkio
| Source | ID | Title |
|---|---|---|
EUVD |
EUVD-2024-16238 | 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. |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.249% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Redhat rhel Els
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| CPEs | cpe:/o:redhat:enterprise_linux:7 |
cpe:/a:redhat:enterprise_linux:8 cpe:/o:redhat:rhel_els:6 cpe:/o:redhat:rhel_els:7 |
| Vendors & Products |
Redhat rhel Els
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| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:/a:redhat:enterprise_linux:9::crb cpe:/a:redhat:enterprise_linux:9::nfv cpe:/a:redhat:enterprise_linux:9::realtime cpe:/o:redhat:enterprise_linux:9::baseos |
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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