Use After Free The advisory has been revoked - it doesn't affect any version of package kernel-headers (opens in a new tab)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-KERNELHEADERS-12981780
- published20 Sept 2025
- disclosed19 Sept 2025
Introduced: 19 Sep 2025
CVE-2025-39861 (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 kernel-headers package and not the kernel-headers package as distributed by RHEL.
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: vhci: Prevent use-after-free by removing debugfs files early
Move the creation of debugfs files into a dedicated function, and ensure they are explicitly removed during vhci_release(), before associated data structures are freed.
Previously, debugfs files such as "force_suspend", "force_wakeup", and others were created under hdev->debugfs but not removed in vhci_release(). Since vhci_release() frees the backing vhci_data structure, any access to these files after release would result in use-after-free errors.
Although hdev->debugfs is later freed in hci_release_dev(), user can access files after vhci_data is freed but before hdev->debugfs is released.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2396933
- https://access.redhat.com/security/cve/CVE-2025-39861
- https://git.kernel.org/stable/c/1503756fffe76d5aea2371a4b8dee20c3577bcfd
- https://git.kernel.org/stable/c/28010791193a4503f054e8d69a950ef815deb539
- https://git.kernel.org/stable/c/7cc08f2f127b9a66f46ea918e34353811a7cb378
- https://git.kernel.org/stable/c/bd75eba88e88d7b896b0c737b02a74a12afc235f