Vulnerability Description
The Linux kernel before 4.8 allows local users to bypass ASLR on setuid programs (such as /bin/su) because install_exec_creds() is called too late in load_elf_binary() in fs/binfmt_elf.c, and thus the ptrace_may_access() check has a race condition when reading /proc/pid/stat.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 4.8 |
Related Weaknesses (CWE)
References
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.html
- http://www.openwall.com/lists/oss-security/2019/04/15/1
- http://www.securityfocus.com/bid/107890
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/commit/?PatchThird Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/commit/?PatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/05/msg00041.html
- https://lists.debian.org/debian-lts-announce/2019/05/msg00042.html
- https://usn.ubuntu.com/4008-1/
- https://usn.ubuntu.com/4008-2/
- https://usn.ubuntu.com/4008-3/
- https://www.openwall.com/lists/oss-security/2019/04/03/4ExploitMailing ListThird Party Advisory
- https://www.openwall.com/lists/oss-security/2019/04/03/4/1ExploitMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.html
- http://www.openwall.com/lists/oss-security/2019/04/15/1
- http://www.securityfocus.com/bid/107890
FAQ
What is CVE-2019-11190?
CVE-2019-11190 is a vulnerability with a CVSS score of 4.7 (MEDIUM). The Linux kernel before 4.8 allows local users to bypass ASLR on setuid programs (such as /bin/su) because install_exec_creds() is called too late in load_elf_binary() in fs/binfmt_elf.c, and thus the...
How severe is CVE-2019-11190?
CVE-2019-11190 has been rated MEDIUM with a CVSS base score of 4.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2019-11190?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.