Race Condition Affecting kernel package, versions <0:4.14.198-152.320.amzn2
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Test your applications- Snyk ID SNYK-AMZN2-KERNEL-1684482
- published 27 Sep 2021
- disclosed 13 Sep 2020
How to fix?
Upgrade Amazon-Linux:2 kernel to version 0:4.14.198-152.320.amzn2 or higher.
This issue was patched in ALAS2-2020-1495.
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.
A race condition between hugetlb sysctl handlers in mm/hugetlb.c in the Linux kernel before 5.8.8 could be used by local attackers to corrupt memory, cause a NULL pointer dereference, or possibly have unspecified other impact, aka CID-17743798d812.
References
- https://security.netapp.com/advisory/ntap-20201009-0002/
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25285
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.8
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=17743798d81238ab13050e8e2833699b54e15467
- https://twitter.com/grsecurity/status/1303749848898904067
- https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html
- https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html
- https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html
- https://usn.ubuntu.com/4576-1/
- https://usn.ubuntu.com/4579-1/