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Vulnerabilities CVE-2025-39826

CVE-2025-39826

None
Open
TLP:CLEAR

net: rose: convert 'use' field to refcount_t

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Description

In the Linux kernel, the following vulnerability has been resolved: net: rose: convert 'use' field to refcount_t The 'use' field in struct rose_neigh is used as a reference counter but lacks atomicity. This can lead to race conditions where a rose_neigh structure is freed while still being referenced by other code paths. For example, when rose_neigh->use becomes zero during an ioctl operation via rose_rt_ioctl(), the structure may be removed while its timer is still active, potentially causing use-after-free issues. This patch changes the type of 'use' from unsigned short to refcount_t and updates all code paths to use rose_neigh_hold() and rose_neigh_put() which operate reference counts atomically.

Details

EPSS Score
0.19%

8.7th percentile

Confidence
90%
Published
Sep 16, 2025
Last Modified
Jul 14, 2026
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