Loop with Unreachable Exit Condition ('Infinite Loop') Affecting kernel-rt-debug-kvm package, versions <0:3.10.0-957.rt56.910.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-CENTOS7-KERNELRTDEBUGKVM-2111171
- published26 Jul 2021
- disclosed30 Nov 2017
Introduced: 30 Nov 2017
CVE-2017-18208 (opens in a new tab)How to fix?
Upgrade Centos:7 kernel-rt-debug-kvm to version 0:3.10.0-957.rt56.910.el7 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-rt-debug-kvm package and not the kernel-rt-debug-kvm package as distributed by Centos.
See How to fix? for Centos:7 relevant fixed versions and status.
The madvise_willneed function in mm/madvise.c in the Linux kernel before 4.14.4 allows local users to cause a denial of service (infinite loop) by triggering use of MADVISE_WILLNEED for a DAX mapping.
References
- https://access.redhat.com/security/cve/CVE-2017-18208
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6ea8d958a2c95a1d514015d4e29ba21a8c0a1a91
- https://github.com/torvalds/linux/commit/6ea8d958a2c95a1d514015d4e29ba21a8c0a1a91
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.4
- https://access.redhat.com/errata/RHSA-2018:3096
- https://usn.ubuntu.com/3619-1/
- https://usn.ubuntu.com/3619-2/
- https://usn.ubuntu.com/3653-1/
- https://usn.ubuntu.com/3653-2/
- https://usn.ubuntu.com/3655-1/
- https://usn.ubuntu.com/3655-2/
- https://usn.ubuntu.com/3657-1/