01 Record

CVE-2026-31680

net: ipv6: flowlabel: defer exclusive option free until RCU teardown

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: ipv6: flowlabel: defer exclusive option free until RCU teardown

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: 0.13% probability of exploitation activity in the next 30 days.
EPSS percentile: Ranks above 2.7% 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

2026-04-25 08:46Z4 MO AGO

Last updated

2026-08-05 12:24Z1 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-825Expired Pointer DereferenceBase

Data version

5.2

Document digest

e7eedfb4f4e718623de96bfd065996532fbae1950bd04a8e654db2d8530af03f

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxd3aedd5ebd4b0b925b0bcda548066803e1318499 to < 4b6798024f7b2d535f3db1002c760143cdbd1bd3, d3aedd5ebd4b0b925b0bcda548066803e1318499 to < 3c54b66c83fb8fcbde8e6a7bf90b65856e39f827, d3aedd5ebd4b0b925b0bcda548066803e1318499 to < 5a6b15f861b7c1304949e3350d23490a5fe429fd, d3aedd5ebd4b0b925b0bcda548066803e1318499 to < 6c7fbdb8ffde6413640de7cfbd7c976c353e89f8, d3aedd5ebd4b0b925b0bcda548066803e1318499 to < 8027964931785cb73d520ac70a342a3dc16c249b, d3aedd5ebd4b0b925b0bcda548066803e1318499 to < 414726b69921fe6355ae453f5b35e68dd078342a, d3aedd5ebd4b0b925b0bcda548066803e1318499 to < 572ce62778519a7d4d1c15f55dd2e45a474133c4, d3aedd5ebd4b0b925b0bcda548066803e1318499 to < 9ca562bb8e66978b53028fa32b1a190708e6a091, 3.9—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/4b6798024f7b2d535f3db1002c760143cdbd1bd3
git.kernel.orghttps://git.kernel.org/stable/c/3c54b66c83fb8fcbde8e6a7bf90b65856e39f827
git.kernel.orghttps://git.kernel.org/stable/c/5a6b15f861b7c1304949e3350d23490a5fe429fd
git.kernel.orghttps://git.kernel.org/stable/c/6c7fbdb8ffde6413640de7cfbd7c976c353e89f8
git.kernel.orghttps://git.kernel.org/stable/c/8027964931785cb73d520ac70a342a3dc16c249b
git.kernel.orghttps://git.kernel.org/stable/c/414726b69921fe6355ae453f5b35e68dd078342a
git.kernel.orghttps://git.kernel.org/stable/c/572ce62778519a7d4d1c15f55dd2e45a474133c4
git.kernel.orghttps://git.kernel.org/stable/c/9ca562bb8e66978b53028fa32b1a190708e6a091
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-2026-31680

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2026-31680

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References