Expired Pointer Dereference The advisory has been revoked - it doesn't affect any version of package bpftool (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL7-BPFTOOL-16307100
- published27 Apr 2026
- disclosed24 Apr 2026
Introduced: 24 Apr 2026
CVE-2026-31589 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:7.
NVD Description
Note: Versions mentioned in the description apply only to the upstream bpftool package and not the bpftool package as distributed by RHEL.
In the Linux kernel, the following vulnerability has been resolved:
mm: call ->free_folio() directly in folio_unmap_invalidate()
We can only call filemap_free_folio() if we have a reference to (or hold a lock on) the mapping. Otherwise, we've already removed the folio from the mapping so it no longer pins the mapping and the mapping can be removed, causing a use-after-free when accessing mapping->a_ops.
Follow the same pattern as __remove_mapping() and load the free_folio function pointer before dropping the lock on the mapping. That lets us make filemap_free_folio() static as this was the only caller outside filemap.c.
References
- https://access.redhat.com/security/cve/CVE-2026-31589
- https://git.kernel.org/stable/c/615d9bb2ccad42f9e21d837431e401db2e471195
- https://git.kernel.org/stable/c/b667df39d98a7a24be7c2a40ff0863dac1ad2cd7
- https://git.kernel.org/stable/c/c330e65ea59c4805d6ab6757c4ddfe8c63acef31
- https://git.kernel.org/stable/c/efc52947247a21bbf79059539bbbd40f4ea76f00