Use After Free The advisory has been revoked - it doesn't affect any version of package perf (opens in a new tab)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-RHEL10-PERF-18642135
- published14 Aug 2026
- disclosed10 Aug 2026
Introduced: 10 Aug 2026
CVE-2026-68393 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:10.
NVD Description
Note: Versions mentioned in the description apply only to the upstream perf package and not the perf package as distributed by RHEL.
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: hci_sync: extend conn_hash lookup critical sections
Using RCU-protected pointers outside the critical sections without refcount is incorrect and may result to UAF.
Extend critical section to cover both hci_conn_hash lookup and use of the returned conn.
Add surrounding rcu_read_lock() also when return value is not used, in preparation for RCU lockdep requirement to hci_lookup_le_connect().
This avoids concurrent deletion of the conn before we are done dereferencing it.
Also, make sure to hold hdev->lock when accessing hdev->accept_list.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2513317
- https://access.redhat.com/security/cve/CVE-2026-68393
- https://git.kernel.org/stable/c/38326774df6198df0cc2744cc73bf77cb741c538
- https://git.kernel.org/stable/c/83b7e67698d0b93f685875ce82c8d335436834f7
- https://git.kernel.org/stable/c/d5efd6e4b8b0634af6843178fe1a7dd2b2178a3d
- https://git.kernel.org/stable/c/3f98e7f38e1bb761a9964a8851f9c08e9c23b3dd