CVE-2023-52940

mm: multi-gen LRU: fix crash during cgroup migration

Description

In the Linux kernel, the following vulnerability has been resolved: mm: multi-gen LRU: fix crash during cgroup migration lru_gen_migrate_mm() assumes lru_gen_add_mm() runs prior to itself. This isn't true for the following scenario: CPU 1 CPU 2 clone() cgroup_can_fork() cgroup_procs_write() cgroup_post_fork() task_lock() lru_gen_migrate_mm() task_unlock() task_lock() lru_gen_add_mm() task_unlock() And when the above happens, kernel crashes because of linked list corruption (mm_struct->lru_gen.list).

N/A

CVSS

Severity:

EPSS 0.03%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/04448022311cebd30969d3aebdde765f1258b360
https://git.kernel.org/stable/c/de08eaa6156405f2e9369f06ba5afae0e4ab3b62

Frequently Asked Questions

What is the severity of CVE-2023-52940?: CVE-2023-52940 has not yet been assigned a CVSS score.
How to fix CVE-2023-52940?: To fix CVE-2023-52940, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-52940 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2023-52940 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-52940?: CVE-2023-52940 affects Linux Linux, Linux Linux.

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