01 Record

CVE-2026-31674

netfilter: ip6t_rt: reject oversized addrnr in rt_mt6_check()

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

View raw JSON

02 Description

netfilter: ip6t_rt: reject oversized addrnr in rt_mt6_check()

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: 0.12% probability of exploitation activity in the next 30 days.
EPSS percentile: Ranks above 2.5% 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 2026-07-14.
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 7.1)

CNA CVSS vector

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

Weaknesses

CWE-1284Improper Validation of Specified Quantity in InputBase

Data version

5.2

Document digest

df91e9b4694f44c998229c351732f9c9e6aa51b4c9e482a626167e2cef3bc66b

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 13e3e30ed3b5b67cc1db2bd58a5d09b0f07debfa, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < af9b7e2b765966457f4ec23be5bd34a141f89574, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 29ea965a1353bc8303877422f79c8211e9ba9c55, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < c6a503a9f4debc654e3a6a7ca1f7fce6a9953c59, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < ded71f5684df16fa645cca5bf4fe6b0cd8a46119, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < d8795fde1f78669a87c87ac29fceab2f104daa8c, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < a28ebf6f99de270d6338ccdc3b49f3e818f99b7b, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 9d3f027327c2fa265f7f85ead41294792c3296ed, 2.6.12—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/13e3e30ed3b5b67cc1db2bd58a5d09b0f07debfa
git.kernel.orghttps://git.kernel.org/stable/c/af9b7e2b765966457f4ec23be5bd34a141f89574
git.kernel.orghttps://git.kernel.org/stable/c/29ea965a1353bc8303877422f79c8211e9ba9c55
git.kernel.orghttps://git.kernel.org/stable/c/c6a503a9f4debc654e3a6a7ca1f7fce6a9953c59
git.kernel.orghttps://git.kernel.org/stable/c/ded71f5684df16fa645cca5bf4fe6b0cd8a46119
git.kernel.orghttps://git.kernel.org/stable/c/d8795fde1f78669a87c87ac29fceab2f104daa8c
git.kernel.orghttps://git.kernel.org/stable/c/a28ebf6f99de270d6338ccdc3b49f3e818f99b7b
git.kernel.orghttps://git.kernel.org/stable/c/9d3f027327c2fa265f7f85ead41294792c3296ed
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-2026-31674

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2026-31674

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References