CVE-2025-21761

openvswitch: use RCU protection in ovs_vport_cmd_fill_info()

HIGH

7.8

CVSS Score

Published: February 27, 2025 at 02:18 AM UTC

Updated: October 15, 2026 at 02:17 AM UTC

2 products affected across 2 vendorsLinux KernelSIMATIC S7-1500 TM MFP

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Severity

HIGH7.8

Exploit prediction

EPSS 0.3%

SSVC

No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

4.15 ≤ v < 5.4.2915.11 ≤ v < 5.15.1795.16 ≤ v < 6.1.1295.5 ≤ v < 5.10.2356.13 ≤ v < 6.13.46.2 ≤ v < 6.6.796.7 ≤ v < 6.12.166.14 6.14 rc1 6.14 rc29354d452034273a50a4fd703bea31e5d6b1fc20b

Vendor states this is fixed in 5828937742af74666192835d657095d95c53dbd0 (fixed)

Vendor states this is fixed in 7e01abc34e87abd091e619161a20f54ed4e3e2da (fixed)

Vendor states this is fixed in 8ec57509c36c8b9a23e50b7858dda0c520a2d074 (fixed)

Vendor states this is fixed in 90b2f49a502fa71090d9f4fe29a2f51fe5dff76d (fixed)

Vendor states this is fixed in a849a10de5e04d798f7f286a2f1ca174719a617a (fixed)

Vendor states this is fixed in a8816b3f1f151373fd30f1996f00480126c8bb11 (fixed)

Vendor states this is fixed in a884f57600e463f69d7b279c4598b865260b62a1 (fixed)

Vendor states this is fixed in e85a25d1a9985645e796039e843d1de581d2de1e (fixed)

Vendor states this is fixed in 4.15 (unaffected)

Vendor states this is fixed in 5.10.235 (unaffected)

Vendor states this is fixed in 5.15.179 (unaffected)

Vendor states this is fixed in 5.4.291 (unaffected)