vulnerability
CentOS Linux: CVE-2019-3901: Moderate: kernel security, bug fix, and enhancement update (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 2 | (AV:L/AC:M/Au:N/C:P/I:N/A:N) | Apr 22, 2019 | Apr 1, 2020 | May 25, 2023 |
Severity
2
CVSS
(AV:L/AC:M/Au:N/C:P/I:N/A:N)
Published
Apr 22, 2019
Added
Apr 1, 2020
Modified
May 25, 2023
Description
A race condition in perf_event_open() allows local attackers to leak sensitive data from setuid programs. As no relevant locks (in particular the cred_guard_mutex) are held during the ptrace_may_access() call, it is possible for the specified target task to perform an execve() syscall with setuid execution before perf_event_alloc() actually attaches to it, allowing an attacker to bypass the ptrace_may_access() check and the perf_event_exit_task(current) call that is performed in install_exec_creds() during privileged execve() calls. This issue affects kernel versions before 4.8.
Solution(s)
centos-upgrade-kernelcentos-upgrade-kernel-rt
References
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