In the Linux kernel, the following vulnerability has been resolved: netrom: Decrease sock refcount when sock timers expire Commit 63346650c1a9 ("netrom: switch to sock timer API") switched to use sock timer API. It replaces mod_timer() by sk_reset_timer(), and del_timer() by sk_stop_timer(). Function sk_reset_timer() will increase the refcount of sock if it is called on an inactive timer, hence, in case the timer expires, we need to decrease the refcount ourselves in the handler, otherwise, the sock refcount will be unbalanced and the sock will never be freed.
Published 2024-05-21 14:35:18
Updated 2024-05-21 16:54:26
Source Linux
View at NVD,   CVE.org

Products affected by CVE-2021-47294

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Exploit prediction scoring system (EPSS) score for CVE-2021-47294

0.04%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 13 %
Percentile, the proportion of vulnerabilities that are scored at or less

References for CVE-2021-47294

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