CVE-2025-21761
HIGH severity · CVSS 7.8 · Use-after-free
7.8CVSS HIGH
Summary
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.
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://git.kernel.org/stable/c/5828937742af74666192835d657095d95c53dbd0 ↗
Additional information
- NVD record
- 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