01 Record

CVE-2026-31659

batman-adv: reject oversized global TT response buffers

CriticalPUBLISHEDCNA: Linux

CNA base score9.8 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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02 Description

batman-adv: reject oversized global TT response buffers

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.
AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
Technical ImpacttotalSuccessful exploitation gives total 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

0.42% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 36.1% of scored records. A rank, not a probability.

NVD base score

9.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

2026-04-24 14:45Z6 MO AGO

Last updated

2026-10-19 18:56Z10 DAYS AGO

Reserved

2026-03-09

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Critical (CVSS 9.8)

CNA CVSS vector

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

Weaknesses

CWE-190Integer Overflow or WraparoundBase

Data version

5.2

Document digest

77aecc546918c0a8230bd06c538df7f6aa19608968c837287614806fe8dc23d0

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux7ea7b4a142758deaf46c1af0ca9ceca6dd55138b to < 7e5d007e0df946bffb8542fb112e0044014a5897, 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b to < 2997f4bd1f982e7013709946e00be89b507693fa, 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b to < 95c71365a2222908441b54d6f2c315e0c79fcec3, 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b to < 69d61639bc7e963c3b645e570279d731e7c89062, 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b to < f970646b9a39539d1bac86822ac78b5915455ea9, 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b to < de6c1dc3c7d01a152607e6fcecee4d5288283f10, 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b to < cf2199171ef799ca7270019125f4a91bd20ad4d9, 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b to < 3a359bf5c61d52e7f09754108309d637532164a6, 3.13—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/7e5d007e0df946bffb8542fb112e0044014a5897
git.kernel.orghttps://git.kernel.org/stable/c/2997f4bd1f982e7013709946e00be89b507693fa
git.kernel.orghttps://git.kernel.org/stable/c/95c71365a2222908441b54d6f2c315e0c79fcec3
git.kernel.orghttps://git.kernel.org/stable/c/69d61639bc7e963c3b645e570279d731e7c89062
git.kernel.orghttps://git.kernel.org/stable/c/f970646b9a39539d1bac86822ac78b5915455ea9
git.kernel.orghttps://git.kernel.org/stable/c/de6c1dc3c7d01a152607e6fcecee4d5288283f10
git.kernel.orghttps://git.kernel.org/stable/c/cf2199171ef799ca7270019125f4a91bd20ad4d9
git.kernel.orghttps://git.kernel.org/stable/c/3a359bf5c61d52e7f09754108309d637532164a6

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 6.19.13-1

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