Premature Release of Resource During Expected Lifetime The advisory has been revoked - it doesn't affect any version of package libperf (opens in a new tab)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-LIBPERF-12494050
- published5 Sept 2025
- disclosed4 Sept 2025
Introduced: 4 Sep 2025
CVE-2025-38703 (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 libperf package and not the libperf package as distributed by RHEL.
In the Linux kernel, the following vulnerability has been resolved:
drm/xe: Make dma-fences compliant with the safe access rules
Xe can free some of the data pointed to by the dma-fences it exports. Most notably the timeline name can get freed if userspace closes the associated submit queue. At the same time the fence could have been exported to a third party (for example a sync_fence fd) which will then cause an use- after-free on subsequent access.
To make this safe we need to make the driver compliant with the newly documented dma-fence rules. Driver has to ensure a RCU grace period between signalling a fence and freeing any data pointed to by said fence.
For the timeline name we simply make the queue be freed via kfree_rcu and for the shared lock associated with multiple queues we add a RCU grace period before freeing the per GT structure holding the lock.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2393157
- https://access.redhat.com/security/cve/CVE-2025-38703
- https://access.redhat.com/errata/RHSA-2026:4012
- https://git.kernel.org/stable/c/683b0e397dad9f26a42dcacf6f7f545a77ce6c06
- https://git.kernel.org/stable/c/6bd90e700b4285e6a7541e00f969cab0d696adde
- https://git.kernel.org/stable/c/b17fcce70733c211cb5dabf54f4f9491920b1d92
- https://git.kernel.org/stable/c/ba37807d08bae67de6139346a85650cab5f6145a