01 Record

CVE-2026-31679

openvswitch: validate MPLS set/set_masked payload length

HighPUBLISHEDCNA: Linux

CNA base score7.1 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

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02 Description

openvswitch: validate MPLS set/set_masked payload length

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.16% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 5.1% of scored records. A rank, not a probability.

NVD base score

7.1 (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:N/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-10-19.

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

2026-04-25 08:46Z6 MO AGO

Last updated

2026-10-19 18:56Z10 DAYS AGO

Reserved

2026-03-09

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.1)

CNA CVSS vector

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

Weaknesses

CWE-20Improper Input ValidationClass

Data version

5.2

Document digest

4100d7778a56133e53dc7cf679ccb111db7602804ff7a9e6ccd804e1ebfdd6f0

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxfbdcdd78da7c95f1b970d371e1b23cbd3aa990f3 to < 68f32ef0683c8d1c05cd2e4f16818fa63ff59c6f, fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3 to < 4cae986225f8b8679ad86b924918e7d75a96aa61, fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3 to < 8ed7b9930cbc3bc71f868fa79a68700ac88d586a, fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3 to < c1f97152df8dfb17e855ddf0fc409b7bd13e9700, fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3 to < 98de18d327ef8cbbb704980e359e4872d8c28997, fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3 to < bd50c7484c3bb34097571c1334174fb8b7408036, fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3 to < 2ca33b88a79ca42f017ae0f7011280325655438e, fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3 to < 546b68ac893595877ffbd7751e5c55fd1c43ede6, 5.5—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/68f32ef0683c8d1c05cd2e4f16818fa63ff59c6f
git.kernel.orghttps://git.kernel.org/stable/c/4cae986225f8b8679ad86b924918e7d75a96aa61
git.kernel.orghttps://git.kernel.org/stable/c/8ed7b9930cbc3bc71f868fa79a68700ac88d586a
git.kernel.orghttps://git.kernel.org/stable/c/c1f97152df8dfb17e855ddf0fc409b7bd13e9700
git.kernel.orghttps://git.kernel.org/stable/c/98de18d327ef8cbbb704980e359e4872d8c28997
git.kernel.orghttps://git.kernel.org/stable/c/bd50c7484c3bb34097571c1334174fb8b7408036
git.kernel.orghttps://git.kernel.org/stable/c/2ca33b88a79ca42f017ae0f7011280325655438e
git.kernel.orghttps://git.kernel.org/stable/c/546b68ac893595877ffbd7751e5c55fd1c43ede6

07 Fixed in

Debian 12

linux
Fixed in 6.1.170-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

linux
Fixed in 6.12.85-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

linux
Fixed in 6.19.11-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.