Improper Resource Locking Affecting kernel package, versions *
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.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-CENTOS10-KERNEL-18045048
- published21 Jul 2026
- disclosed19 Jul 2026
Introduced: 19 Jul 2026
NewCVE-2026-64043 (opens in a new tab)How to fix?
There is no fixed version for Centos:10 kernel.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel package and not the kernel package as distributed by Centos.
See How to fix? for Centos:10 relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
ovpn: fix race between deleting interface and adding new peer
While deleting an existing ovpn interface, there is a very narrow window where adding a new peer via netlink may cause the netdevice to hang and prevent its unregistration.
It may happen during ovpn_dellink(), when all existing peers are freed and the device is queued for deregistration, but a CMD_PEER_NEW message comes in adding a new peer that takes again a reference to the netdev.
At this point there is no way to release the device because we are under the assumption that all peers were already released.
Fix the race condition by releasing all peers in ndo_uninit(), when the netdevice has already been removed from the netdev list.
Also ovpn_peer_add() has now an extra check that forces the function to bail out if the device reg_state is not REGISTERED. This way any incoming CMD_PEER_NEW racing with the interface deletion routine will simply stop before adding the peer.
Note that the above check happens while holding the netdev_lock to prevent racing netdev state changes.
ovpn_dellink() is now empty and can be removed.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2502569
- https://access.redhat.com/security/cve/CVE-2026-64043
- https://git.kernel.org/stable/c/097d62df38314c14b88fab9096f3461baf158e2b
- https://git.kernel.org/stable/c/982422b11e6f95f766a8cd2c2b1cbdb77e234a61
- https://git.kernel.org/stable/c/de9fec2a6645f5b4d23398cd870a33e2703728d9