Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: openvswitch: use RCU protection in ovs_vport_cmd_fill_info() ovs_vport_cmd_fill_info() can be called without RTNL or RCU. Use RCU protection and dev_net_rcu() to avoid potential UAF.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 4.15, < 5.4.291 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/5828937742af74666192835d657095d95c53dbd0Patch
- https://git.kernel.org/stable/c/7e01abc34e87abd091e619161a20f54ed4e3e2daPatch
- https://git.kernel.org/stable/c/8ec57509c36c8b9a23e50b7858dda0c520a2d074Patch
- https://git.kernel.org/stable/c/90b2f49a502fa71090d9f4fe29a2f51fe5dff76dPatch
- https://git.kernel.org/stable/c/a849a10de5e04d798f7f286a2f1ca174719a617aPatch
- https://git.kernel.org/stable/c/a8816b3f1f151373fd30f1996f00480126c8bb11Patch
- https://git.kernel.org/stable/c/a884f57600e463f69d7b279c4598b865260b62a1Patch
- https://git.kernel.org/stable/c/e85a25d1a9985645e796039e843d1de581d2de1ePatch
- https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html
- https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
FAQ
What is CVE-2025-21761?
CVE-2025-21761 is a vulnerability with a CVSS score of 7.8 (HIGH). In the Linux kernel, the following vulnerability has been resolved: openvswitch: use RCU protection in ovs_vport_cmd_fill_info() ovs_vport_cmd_fill_info() can be called without RTNL or RCU. Use RCU...
How severe is CVE-2025-21761?
CVE-2025-21761 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-21761?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.