01 Record

CVE-2026-31508

net: openvswitch: Avoid releasing netdev before teardown completes

HighPUBLISHEDCNA: Linux

CNA base score7.8 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

View raw JSON

02 Description

net: openvswitch: Avoid releasing netdev before teardown completes

03 Exploitation and scoring

Exploitation: Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision: Not assessed by CISA
EPSS probability: 0.14% probability of exploitation activity in the next 30 days.
EPSS percentile: Ranks above 3.4% of scored records. A rank, not a probability.
NVD base score: 7.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD analysis status: Modified. NVD last modified this record on 2026-07-14.
Red Hat severity: Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2026-04-22 13:54Z4 MO AGO

Last updated

2026-08-05 12:23Z1 MO AGO

Reserved

2026-03-09

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-367Time-of-check Time-of-use (TOCTOU) Race ConditionBase

Data version

5.2

Document digest

4ffac719480e531fcd64ac3a5f3a9493bc7339c90d345f2eea878a6e934f7e8d

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxb823c3344d5446b720227ba561df10a4f0add515 to < df3c95be76103604e752131d9495a24814915ece, 052e5db5be4576e0a8ef1460b210da5f328f4cd1 to < 33609454be4f582e686a4bf13d4482a5ca0f6c4b, c98263d5ace597c096a7a60aeef790da7b54979e to < 5fdeaf591a0942772c2d18ff3563697a49ad01c6, 0fc642f011cb7a7eff41109e66d3b552e9f4d795 to < 4c3e25a7b711a402fcbbbcfbbdf2868ece1ae7c8, 5116f61ab11846844585c9082c547c4ccd97ff1a to < 43579baa17270aa51f93eb09b6e4af6e047b7f6e, f31557fb1b35332cca9994aa196cef284bcf3807 to < 95265232b49765a4d00f4d028c100bb7185600f4, 5498227676303e3ffa9a3a46214af96bc3e81314 to < 755a6300afbd743cda4b102f24f343380ec0e0ff, 5498227676303e3ffa9a3a46214af96bc3e81314 to < 7c770dadfda5cbbde6aa3c4363ed513f1d212bf8, 5.10.248 to < 5.10.253, 5.15.198 to < 5.15.203, 6.1.160 to < 6.1.168, 6.6.120 to < 6.6.131, 6.12.64 to < 6.12.80, 6.18.4 to < 6.18.21, 6.19—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/df3c95be76103604e752131d9495a24814915ece
git.kernel.orghttps://git.kernel.org/stable/c/33609454be4f582e686a4bf13d4482a5ca0f6c4b
git.kernel.orghttps://git.kernel.org/stable/c/5fdeaf591a0942772c2d18ff3563697a49ad01c6
git.kernel.orghttps://git.kernel.org/stable/c/4c3e25a7b711a402fcbbbcfbbdf2868ece1ae7c8
git.kernel.orghttps://git.kernel.org/stable/c/43579baa17270aa51f93eb09b6e4af6e047b7f6e
git.kernel.orghttps://git.kernel.org/stable/c/95265232b49765a4d00f4d028c100bb7185600f4
git.kernel.orghttps://git.kernel.org/stable/c/755a6300afbd743cda4b102f24f343380ec0e0ff
git.kernel.orghttps://git.kernel.org/stable/c/7c770dadfda5cbbde6aa3c4363ed513f1d212bf8
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-082556.html
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-019113.html

01 Record index

CVE-2026-31508

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2026-31508

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References