Race Condition Affecting kernel package, versions <0:4.14.77-80.57.amzn2
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-AMZN2-KERNEL-1666553
- published27 Sept 2021
- disclosed3 Oct 2018
Introduced: 3 Oct 2018
CVE-2018-17972 (opens in a new tab)How to fix?
Upgrade Amazon-Linux:2 kernel to version 0:4.14.77-80.57.amzn2 or higher.
This issue was patched in ALAS2-2018-1100.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel package and not the kernel package as distributed by Amazon-Linux.
See How to fix? for Amazon-Linux:2 relevant fixed versions and status.
An issue was discovered in the proc_pid_stack function in fs/proc/base.c in the Linux kernel through 4.18.11. It does not ensure that only root may inspect the kernel stack of an arbitrary task, allowing a local attacker to exploit racy stack unwinding and leak kernel task stack contents.
References
- http://www.securityfocus.com/bid/105525
- https://support.f5.com/csp/article/K27673650?utm_source=f5support&utm_medium=RSS
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-17972
- https://marc.info/?l=linux-fsdevel&m=153806242024956&w=2
- https://lists.debian.org/debian-lts-announce/2019/03/msg00017.html
- https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html
- https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html
- https://access.redhat.com/errata/RHSA-2019:0512
- https://access.redhat.com/errata/RHSA-2019:0514
- https://access.redhat.com/errata/RHSA-2019:0831
- https://access.redhat.com/errata/RHSA-2019:2473
- http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00043.html
- https://usn.ubuntu.com/3821-1/
- https://usn.ubuntu.com/3821-2/
- https://usn.ubuntu.com/3832-1/
- https://usn.ubuntu.com/3835-1/
- https://usn.ubuntu.com/3871-1/
- https://usn.ubuntu.com/3871-3/
- https://usn.ubuntu.com/3871-4/
- https://usn.ubuntu.com/3871-5/
- https://usn.ubuntu.com/3880-1/
- https://usn.ubuntu.com/3880-2/
- https://support.f5.com/csp/article/K27673650?utm_source=f5support&%3Butm_medium=RSS