PT-2026-35143 · Linux · Linux Kernel

CVE-2026-31683 · Published 2026-03-14 · Updated 2026-07-31

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description An issue exists in the batman-adv module where OGM aggregation can lead to a buffer overflow. When the OGM aggregation state is toggled during runtime, a forwarded packet might be allocated with only packet len bytes. If a subsequent packet is selected for aggregation and appended, it can trigger skb put overflow conditions if the target skb tailroom is insufficient to accommodate the new packet.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Weakness Enumeration

CWE-131

Related Identifiers

BDU:2026-08799

CVE-2026-31683

ECHO-DFC6-ED7D-9BDC

OPENSUSE-SU-2026:20965-1

SUSE-SU-2026:22099-1

SUSE-SU-2026:22112-1

SUSE-SU-2026:22117-1

SUSE-SU-2026:22127-1

USN-8567-1

USN-8574-1

USN-8574-2

USN-8574-3

USN-8575-1

USN-8575-2

USN-8575-3

USN-8576-1

USN-8576-2

USN-8595-1

USN-8595-2

USN-8595-3

USN-8596-1

USN-8597-1

USN-8606-1

USN-8607-1

USN-8608-1

USN-8609-1

USN-8610-1

USN-8619-1

USN-8620-1

USN-8620-2

USN-8620-3

USN-8620-4

Affected Products

Linux Kernel

References · 1531

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31683.json · Exploit
• https://ubuntu.com/security/CVE-2026-52916 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-43117 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-43371 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-31416 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-31580 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-46128 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-46157 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-31576 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-45928 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-23361 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-43412 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-23138 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-45969 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-43319 · Vendor Advisory