High 7.8Published Feb 26, 2025

CVE-2025-21761openvswitch: use RCU protection in ovs_vport_cmd_fill_info()

Updated under an hour ago (Oct 27, 2026, 5:23 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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: 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-416
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 14, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 9354d452034273a50a4fd703bea31e5d6b1fc20b before e85a25d1a9985645e796039e843d1de581d2de1e; from 9354d452034273a50a4fd703bea31e5d6b1fc20b before a8816b3f1f151373fd30f1996f00480126c8bb11; from 9354d452034273a50a4fd703bea31e5d6b1fc20b before a884f57600e463f69d7b279c4598b865260b62a1; 9354d452034273a50a4fd703bea31e5d6b1fc20b builds before 7e01abc34e87abd091e619161a20f54ed4e3e2da; 9354d452034273a50a4fd703bea31e5d6b1fc20b builds before 8ec57509c36c8b9a23e50b7858dda0c520a2d074; from 9354d452034273a50a4fd703bea31e5d6b1fc20b before a849a10de5e04d798f7f286a2f1ca174719a617a; from 9354d452034273a50a4fd703bea31e5d6b1fc20b before 5828937742af74666192835d657095d95c53dbd0; 9354d452034273a50a4fd703bea31e5d6b1fc20b builds before 90b2f49a502fa71090d9f4fe29a2f51fe5dff76d	CNA record
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name)	all versions	CISA ADP
linux linux_kernel linux:linux_kernel	from 4.15 before 5.4.291; from 5.5 before 5.10.235; from 5.11 before 5.15.179; from 5.16 before 6.1.129; from 6.2 before 6.6.79; from 6.7 before 6.12.16; from 6.13 before 6.13.4; 6.14; and 1 more ranges	NVD

References

References

https://git.kernel.org/stable/c/e85a25d1a9985645e796039e843d1de581d2de1e	patch
https://git.kernel.org/stable/c/a8816b3f1f151373fd30f1996f00480126c8bb11	patch
https://git.kernel.org/stable/c/a884f57600e463f69d7b279c4598b865260b62a1	patch
https://git.kernel.org/stable/c/7e01abc34e87abd091e619161a20f54ed4e3e2da	patch
https://git.kernel.org/stable/c/8ec57509c36c8b9a23e50b7858dda0c520a2d074	patch
https://git.kernel.org/stable/c/a849a10de5e04d798f7f286a2f1ca174719a617a	patch
https://git.kernel.org/stable/c/5828937742af74666192835d657095d95c53dbd0	patch
https://git.kernel.org/stable/c/90b2f49a502fa71090d9f4fe29a2f51fe5dff76d	patch
https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html
https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html
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The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.