NULL Pointer Dereference Affecting kernel-rt package, versions <0:3.10.0-693.rt56.617.el7
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-CENTOS7-KERNELRT-2087885
- published26 Jul 2021
- disclosed21 Mar 2017
Introduced: 21 Mar 2017
CVE-2017-2647 (opens in a new tab)How to fix?
Upgrade Centos:7 kernel-rt to version 0:3.10.0-693.rt56.617.el7 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-rt package and not the kernel-rt package as distributed by Centos.
See How to fix? for Centos:7 relevant fixed versions and status.
The KEYS subsystem in the Linux kernel before 3.18 allows local users to gain privileges or cause a denial of service (NULL pointer dereference and system crash) via vectors involving a NULL value for a certain match field, related to the keyring_search_iterator function in keyring.c.
References
- http://www.securityfocus.com/bid/97258
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81
- https://bugzilla.redhat.com/show_bug.cgi?id=1428353
- https://github.com/torvalds/linux/commit/c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81
- https://access.redhat.com/security/cve/CVE-2017-2647
- https://access.redhat.com/errata/RHSA-2017:2077
- https://usn.ubuntu.com/3849-1/
- https://usn.ubuntu.com/3849-2/