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Vulnerability Details CVE-2024-38580

In the Linux kernel, the following vulnerability has been resolved: epoll: be better about file lifetimes epoll can call out to vfs_poll() with a file pointer that may race with the last 'fput()'. That would make f_count go down to zero, and while the ep->mtx locking means that the resulting file pointer tear-down will be blocked until the poll returns, it means that f_count is already dead, and any use of it won't actually get a reference to the file any more: it's dead regardless. Make sure we have a valid ref on the file pointer before we call down to vfs_poll() from the epoll routines.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 1.1%
CVSS Severity
CVSS v3 Score 4.7
Products affected by CVE-2024-38580


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