Race Condition Affecting kernel-uek-debug package, versions <0:2.6.39-400.311.1.el5uek
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Test your applications- Snyk ID SNYK-ORACLE5-KERNELUEKDEBUG-2546337
- published 10 Apr 2022
- disclosed 12 Apr 2019
Introduced: 12 Apr 2019
CVE-2019-11190 Open this link in a new tabHow to fix?
Upgrade Oracle:5 kernel-uek-debug to version 0:2.6.39-400.311.1.el5uek or higher.
This issue was patched in ELSA-2019-4646.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-uek-debug package and not the kernel-uek-debug package as distributed by Oracle.
See How to fix? for Oracle:5 relevant fixed versions and status.
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.
References
- https://linux.oracle.com/cve/CVE-2019-11190.html
- https://linux.oracle.com/errata/ELSA-2019-4642.html
- https://linux.oracle.com/errata/ELSA-2019-4644.html
- https://linux.oracle.com/errata/ELSA-2019-4646.html
- https://www.openwall.com/lists/oss-security/2019/04/03/4/1
- https://www.openwall.com/lists/oss-security/2019/04/03/4
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/commit/?id=e1676b55d874a43646e8b2c46d87f2f3e45516ff
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/commit/?id=a5b5352558f6808db0589644ea5401b3e3148a0d
- http://www.securityfocus.com/bid/107890
- http://www.openwall.com/lists/oss-security/2019/04/15/1
- 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/
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.html