CVE-2022-33744 Affecting kernel-debuginfo package, versions <0:4.14.287-215.504.amzn2
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Test your applications- Snyk ID SNYK-AMZN2-KERNELDEBUGINFO-2957208
- published 21 Jul 2022
- disclosed 5 Jul 2022
Introduced: 5 Jul 2022
CVE-2022-33744 Open this link in a new tabHow to fix?
Upgrade Amazon-Linux:2 kernel-debuginfo to version 0:4.14.287-215.504.amzn2 or higher.
This issue was patched in ALAS2-2022-1825.
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.
Arm guests can cause Dom0 DoS via PV devices When mapping pages of guests on Arm, dom0 is using an rbtree to keep track of the foreign mappings. Updating of that rbtree is not always done completely with the related lock held, resulting in a small race window, which can be used by unprivileged guests via PV devices to cause inconsistencies of the rbtree. These inconsistencies can lead to Denial of Service (DoS) of dom0, e.g. by causing crashes or the inability to perform further mappings of other guests' memory pages.
References
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-33744
- http://www.openwall.com/lists/oss-security/2022/07/05/4
- http://xenbits.xen.org/xsa/advisory-406.html
- https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html
- https://www.debian.org/security/2022/dsa-5191
- https://xenbits.xenproject.org/xsa/advisory-406.txt