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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-52919 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: batman-adv: fix tp_meter counter underflow during shutdown batadv_tp_sender_shutdown() unconditionally decrements the "sending" atomic counter. If multiple paths (e.g. timeout, user cancel, and normal finish) call this function, the counter can underflow to -1. Since the sender logic treats any non-zero value as "still sending", a negative value causes the sender kthread to loop indefinitely. This leads to a use-after-free when the interface is removed while the zombie thread is still active. Fix this by using atomic_xchg() to ensure the counter only transitions from 1 to 0 once. [sven: added missing change in batadv_tp_send]


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/01cefc5923889e29dbb5f281c3d457714ceb9c00 kernel.org
https://git.kernel.org/stable/c/90ae3eae06b7b8ab9f6250b9497c860915b4c17b kernel.org
https://git.kernel.org/stable/c/94f3b133168d1c49895e7cc6afbcf1cc0b354602 kernel.org
https://git.kernel.org/stable/c/abae88fa254f2981d39ac003a7b302528a22af64 kernel.org
https://git.kernel.org/stable/c/aeae11c5dad9cd0d50723890bdd866f8e6db2e7d kernel.org
https://git.kernel.org/stable/c/c1bac194733aabd731aafa6a01350c229e187dba kernel.org
https://git.kernel.org/stable/c/c66d20a3ff095e3f000551d208ec2606616db15c kernel.org
https://git.kernel.org/stable/c/e75e2ab463b5b34df6b98f94d740aff327ce9f6b kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-52919
NVD Published Date:
06/24/2026
NVD Last Modified:
06/24/2026
Source:
kernel.org