CVE-2019-11191
The Linux kernel through 5.0.7, when CONFIG_IA32_AOUT is enabled and ia32_aout is loaded, allows local users to bypass ASLR on setuid a.out programs (if any exist) because install_exec_creds() is called too late in load_aout_binary() in…
Does this matter?
Lower severity and a low EPSS score (0.50%). Track it; it rarely justifies an emergency change on its own.
Description
The Linux kernel through 5.0.7, when CONFIG_IA32_AOUT is enabled and ia32_aout is loaded, allows local users to bypass ASLR on setuid a.out programs (if any exist) because install_exec_creds() is called too late in load_aout_binary() in fs/binfmt_aout.c, and thus the ptrace_may_access() check has a race condition when reading /proc/pid/stat. NOTE: the software maintainer disputes that this is a vulnerability because ASLR for a.out format executables has never been supported
- CVSS 3.0
- 2.5 LOWCVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
- EPSS
- 0.50% probability · 42th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-362
- Affected
- linux/linux kernel
- Source
- cve@mitre.org
EPSS 0.5% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.html
- http://www.openwall.com/lists/oss-security/2019/04/18/5Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2019/05/22/7
- http://www.securityfocus.com/bid/107887Third Party Advisory, VDB Entry
- https://usn.ubuntu.com/4006-1/
- https://usn.ubuntu.com/4006-2/
- https://usn.ubuntu.com/4007-1/
- https://usn.ubuntu.com/4007-2/
- https://usn.ubuntu.com/4008-1/
- https://usn.ubuntu.com/4008-3/
- https://www.openwall.com/lists/oss-security/2019/04/03/4Exploit, Mailing List, Third Party Advisory
- https://www.openwall.com/lists/oss-security/2019/04/03/4/1Exploit, Mailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.html
- http://www.openwall.com/lists/oss-security/2019/04/18/5Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2019/05/22/7
- http://www.securityfocus.com/bid/107887Third Party Advisory, VDB Entry
- https://usn.ubuntu.com/4006-1/
- https://usn.ubuntu.com/4006-2/
- https://usn.ubuntu.com/4007-1/
- https://usn.ubuntu.com/4007-2/
- https://usn.ubuntu.com/4008-1/
- https://usn.ubuntu.com/4008-3/
- https://www.openwall.com/lists/oss-security/2019/04/03/4Exploit, Mailing List, Third Party Advisory
- https://www.openwall.com/lists/oss-security/2019/04/03/4/1Exploit, Mailing List, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.