Unchecked Error Condition Affecting kernel-headers package, versions <0:3.10.0-862.2.3.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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Test your applications- Snyk IDSNYK-RHEL7-KERNELHEADERS-4783281
- published26 Jul 2021
- disclosed13 Sept 2017
Introduced: 13 Sep 2017
CVE-2018-1091 (opens in a new tab)How to fix?
Upgrade RHEL:7 kernel-headers to version 0:3.10.0-862.2.3.el7 or higher.
This issue was patched in RHSA-2018:1318.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-headers package and not the kernel-headers package as distributed by RHEL.
See How to fix? for RHEL:7 relevant fixed versions and status.
In the flush_tmregs_to_thread function in arch/powerpc/kernel/ptrace.c in the Linux kernel before 4.13.5, a guest kernel crash can be triggered from unprivileged userspace during a core dump on a POWER host due to a missing processor feature check and an erroneous use of transactional memory (TM) instructions in the core dump path, leading to a denial of service.
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c1fa0768a8713b135848f78fd43ffc208d8ded70
- http://openwall.com/lists/oss-security/2018/03/27/4
- https://access.redhat.com/security/cve/cve-2018-1091
- https://bugzilla.redhat.com/show_bug.cgi?id=1558149
- https://github.com/torvalds/linux/commit/c1fa0768a8713b135848f78fd43ffc208d8ded70
- https://marc.info/?l=linuxppc-embedded&m=150535531910494&w=2
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.5
- https://access.redhat.com/security/cve/CVE-2018-1091
- https://access.redhat.com/errata/RHSA-2018:1318