CVE-2025-21761
High
openvswitch: use RCU protection in ovs_vport_cmd_fill_info()
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.
Exploit probability
0.2%
Published
February 27, 2025
Required by
Not available
Last source change
August 12, 2026
02 / AFFECTED SOFTWARE
Affected packages
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
Open Source Vulnerabilities
CVE-2025-21761
View original source
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.
05 / REFERENCES
Further evidence
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/5828937742af74666192835d657095d95c53dbd0
- https://git.kernel.org/stable/c/7e01abc34e87abd091e619161a20f54ed4e3e2da
- https://git.kernel.org/stable/c/8ec57509c36c8b9a23e50b7858dda0c520a2d074
- https://git.kernel.org/stable/c/90b2f49a502fa71090d9f4fe29a2f51fe5dff76d
- https://git.kernel.org/stable/c/a849a10de5e04d798f7f286a2f1ca174719a617a
- https://git.kernel.org/stable/c/a8816b3f1f151373fd30f1996f00480126c8bb11
- https://git.kernel.org/stable/c/a884f57600e463f69d7b279c4598b865260b62a1
- https://git.kernel.org/stable/c/e85a25d1a9985645e796039e843d1de581d2de1e
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21761.json
- https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html
- https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html
- https://nvd.nist.gov/vuln/detail/CVE-2025-21761