NULL Pointer Dereference Affecting kernel-debuginfo package, versions <0:4.14.343-259.562.amzn2
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Test your applications- Snyk ID SNYK-AMZN2-KERNELDEBUGINFO-7365082
- published 25 Jun 2024
- disclosed 29 Jan 2024
Introduced: 29 Jan 2024
CVE-2023-46838 Open this link in a new tabHow to fix?
Upgrade Amazon-Linux:2 kernel-debuginfo to version 0:4.14.343-259.562.amzn2 or higher.
This issue was patched in ALAS2-2024-2549.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-debuginfo package and not the kernel-debuginfo package as distributed by Amazon-Linux.
See How to fix? for Amazon-Linux:2 relevant fixed versions and status.
Transmit requests in Xen's virtual network protocol can consist of multiple parts. While not really useful, except for the initial part any of them may be of zero length, i.e. carry no data at all. Besides a certain initial portion of the to be transferred data, these parts are directly translated into what Linux calls SKB fragments. Such converted request parts can, when for a particular SKB they are all of length zero, lead to a de-reference of NULL in core networking code.
References
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-46838
- https://xenbits.xenproject.org/xsa/advisory-448.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RGEKT4DKSDXDS34EL7M4UVJMMPH7Z3ZZ/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZFYW6R64GPLUOXSQBJI3JBUX3HGLAYPP/
- https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html