Improper Input Validation Affecting kernel-uek-debug-devel package, versions <0:4.1.12-124.24.1.el7uek
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-ORACLE7-KERNELUEKDEBUGDEVEL-2545335
- published10 Apr 2022
- disclosed7 Mar 2018
Introduced: 7 Mar 2018
CVE-2017-18221 (opens in a new tab)How to fix?
Upgrade Oracle:7 kernel-uek-debug-devel to version 0:4.1.12-124.24.1.el7uek or higher.
This issue was patched in ELSA-2019-4315.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-uek-debug-devel package and not the kernel-uek-debug-devel package as distributed by Oracle.
See How to fix? for Oracle:7 relevant fixed versions and status.
The __munlock_pagevec function in mm/mlock.c in the Linux kernel before 4.11.4 allows local users to cause a denial of service (NR_MLOCK accounting corruption) via crafted use of mlockall and munlockall system calls.
References
- https://linux.oracle.com/cve/CVE-2017-18221.html
- https://linux.oracle.com/errata/ELSA-2019-4315.html
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=70feee0e1ef331b22cc51f383d532a0d043fbdcc
- http://www.securityfocus.com/bid/103321
- https://github.com/torvalds/linux/commit/70feee0e1ef331b22cc51f383d532a0d043fbdcc
- https://usn.ubuntu.com/3655-1/
- https://usn.ubuntu.com/3655-2/
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.11.4