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Missing Release of Resource after Effective Lifetime The advisory has been revoked - it doesn't affect any version of package kernel-rt-64k-devel-matched  (opens in a new tab)

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EPSS
0.16% (6th percentile)

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  • Snyk IDSNYK-RHEL9-KERNELRT64KDEVELMATCHED-14655368
  • published25 Dec 2025
  • disclosed24 Dec 2025
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Introduced: 24 Dec 2025

CVE-2023-54033  (opens in a new tab)
CWE-772  (opens in a new tab)

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:9.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt-64k-devel-matched package and not the kernel-rt-64k-devel-matched package as distributed by RHEL.

In the Linux kernel, the following vulnerability has been resolved:

bpf: fix a memory leak in the LRU and LRU_PERCPU hash maps

The LRU and LRU_PERCPU maps allocate a new element on update before locking the target hash table bucket. Right after that the maps try to lock the bucket. If this fails, then maps return -EBUSY to the caller without releasing the allocated element. This makes the element untracked: it doesn't belong to either of free lists, and it doesn't belong to the hash table, so can't be re-used; this eventually leads to the permanent -ENOMEM on LRU map updates, which is unexpected. Fix this by returning the element to the local free list if bucket locking fails.