SB20260816303 - Improper resource shutdown or release in Linux kernel batman-adv
Published: August 16, 2026
Security Bulletin ID
SB20260816303
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper resource shutdown or release (CVE-ID: CVE-2026-72230)
CWE-ID: CWE-404 - Improper Resource Shutdown or Release
CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper resource shutdown or release in batadv_frag_send_packet() in the batman-adv fragmentation component when processing packets with an empty payload or a zero fragment size. A local user can trigger the error path with such packet conditions to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/04ccbed8179e7d4d0906d00939300ddc5b48ce7e
- https://git.kernel.org/stable/c/08047838817561cef33ada9774a2a4663d499ecb
- https://git.kernel.org/stable/c/59e1da1ab354d1f2b7bab8d44f846262f990ad9d
- https://git.kernel.org/stable/c/601dff01a03ecced59938cdd69eeb2c66e4158f2
- https://git.kernel.org/stable/c/6b628425aed49a1c7a4ffc997583840fc582d32b
- https://git.kernel.org/stable/c/740542f11bf8c86411c429fbd7f84fc6bee80e76
- https://git.kernel.org/stable/c/8f54162e07d3eea1e4ff21464cf2a815d79b6510
- https://git.kernel.org/stable/c/a5155aeeae8ead3c6081f7f197608033e4dcfe75