Incomplete Cleanup Affecting kernel-debuginfo-common-x86_64 package, versions <0:4.14.256-197.484.amzn2
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Test your applications- Snyk ID SNYK-AMZN2-KERNELDEBUGINFOCOMMONX8664-2315640
- published 11 Dec 2021
- disclosed 3 Mar 2022
Introduced: 11 Dec 2021
CVE-2021-4002 Open this link in a new tabHow to fix?
Upgrade Amazon-Linux:2 kernel-debuginfo-common-x86_64 to version 0:4.14.256-197.484.amzn2 or higher.
This issue was patched in ALAS2-2021-1727.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-debuginfo-common-x86_64 package and not the kernel-debuginfo-common-x86_64 package as distributed by Amazon-Linux.
See How to fix? for Amazon-Linux:2 relevant fixed versions and status.
A memory leak flaw in the Linux kernel's hugetlbfs memory usage was found in the way the user maps some regions of memory twice using shmget() which are aligned to PUD alignment with the fault of some of the memory pages. A local user could use this flaw to get unauthorized access to some data.
References
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4002
- https://bugzilla.redhat.com/show_bug.cgi?id=2025726
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=13e4ad2ce8df6e058ef482a31fdd81c725b0f7ea
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a4a118f2eead1d6c49e00765de89878288d4b890
- https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html
- https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
- https://www.debian.org/security/2022/dsa-5096
- https://www.openwall.com/lists/oss-security/2021/11/25/1
- https://www.oracle.com/security-alerts/cpujul2022.html