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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-52916 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: batman-adv: frag: disallow unicast fragment in fragment batadv_frag_skb_buffer() is called by batadv_batman_skb_recv() when a BATADV_UNICAST_FRAG packet is received. Once all fragments are collected and the packet is reassembled, batadv_recv_frag_packet() calls batadv_batman_skb_recv() again to process the defragmented payload. A malicious sender can craft a BATADV_UNICAST_FRAG packet whose reassembled payload is itself a BATADV_UNICAST_FRAG packet (matryoshka-style nesting). Each nesting level recurses through batadv_batman_skb_recv() without bound, growing the kernel stack until it is exhausted. Since refragmentation or fragments in fragments are not actually allowed, discard all packets which are still BATADV_UNICAST_FRAG packets after the defragmentation process.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/0c208fa3859e3a33a1c38bebc41d021166e94ac8 kernel.org
https://git.kernel.org/stable/c/5418be6c2e117bf8a316582795a8e3ff90f45e5d kernel.org
https://git.kernel.org/stable/c/5895ad21c7059a652da83fb817510f7a1e962abf kernel.org
https://git.kernel.org/stable/c/7138c35c9ad39a2fca6264af6b87466471f04ffc kernel.org
https://git.kernel.org/stable/c/aea54d0bbe156d5ab7d00d68f66149ff41f4612a kernel.org
https://git.kernel.org/stable/c/b54e459cf86943583c1aa2ee3081874e7ab1f5f3 kernel.org
https://git.kernel.org/stable/c/bc62216dc8e221e3781afa14430f45208bfa9af9 kernel.org
https://git.kernel.org/stable/c/bcda4814dc6524283c0b958882cb963d75fe411d kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-52916
NVD Published Date:
06/24/2026
NVD Last Modified:
06/24/2026
Source:
kernel.org