SB20260816294 - Use-after-free in Linux kernel batman-adv
Published: August 16, 2026
Security Bulletin ID
SB20260816294
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Use-after-free (CVE-ID: CVE-2026-72235)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to use-after-free in batadv_interface_rx() in the batman-adv soft interface code when processing received packets after a potential skb reallocation. A remote attacker can send a specially crafted packet to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/035e1fed892d3d06002a73ff73668f618a514644
- https://git.kernel.org/stable/c/2cefa5141cab8ec1e4b24cf585958b13f2e3049d
- https://git.kernel.org/stable/c/6abf73589bed3f27ee240c08108feb72bed0b9c6
- https://git.kernel.org/stable/c/6e189f14d1ea28db212b9d70a02131a7ce518012
- https://git.kernel.org/stable/c/85a71a81854e0e191ad0e533eabb4eff54866feb
- https://git.kernel.org/stable/c/a1820344b180cb55af748f102bc536b5c93164db
- https://git.kernel.org/stable/c/b031fc97e1993d29d6c3a0e86a99140528cf31e8
- https://git.kernel.org/stable/c/f19259395b44af67f3c274e34237c295b526b859