CVE-2019-3901
- State
- Published
- Severity
- 5.6 Medium
- Published
- Apr 22, 2019
- Updated
- Aug 4, 2024
- Reserved
- Jan 3, 2019
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.0 | 5.6 Medium | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N | redhat |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
kernelThe Linux Foundation |
|
References
- 89937vdb-entry
- [debian-lts-announce] 20190528 [SECURITY] [DLA 1799-1] linux security updatemailing-list
- [debian-lts-announce] 20190528 [SECURITY] [DLA 1799-2] linux security updatemailing-list
- https://security.netapp.com/advisory/ntap-20190517-0005/
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3901
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