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Vulnerability Details CVE-2026-64375

In the Linux kernel, the following vulnerability has been resolved: proc: protect ptrace_may_access() with exec_update_lock (FD links) proc_pid_get_link() and proc_pid_readlink() currently look up the task from the pid once, then do the ptrace access check on that task, then look up the task from the pid a second time to do the actual access. That's racy in several ways. To fix it, pass the task to the ->proc_get_link() handler, and instead of proc_fd_access_allowed(), introduce a new helper call_proc_get_link() that looks up and locks the task, does the access check, and calls ->proc_get_link().
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 3.3%
CVSS Severity
CVSS v3 Score 7.8
Products affected by CVE-2026-64375


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