Race Condition Affecting kernel-core package, versions <0:5.14.0-284.77.1.el9_2
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Test your applications- Snyk ID SNYK-RHEL9-KERNELCORE-7651216
- published 8 Aug 2024
- disclosed 30 May 2024
Introduced: 30 May 2024
CVE-2024-36020 Open this link in a new tabHow to fix?
Upgrade RHEL:9 kernel-core to version 0:5.14.0-284.77.1.el9_2 or higher.
This issue was patched in RHSA-2024:5066.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-core package and not the kernel-core package as distributed by RHEL.
See How to fix? for RHEL:9 relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
i40e: fix vf may be used uninitialized in this function warning
To fix the regression introduced by commit 52424f974bc5, which causes servers hang in very hard to reproduce conditions with resets races. Using two sources for the information is the root cause. In this function before the fix bumping v didn't mean bumping vf pointer. But the code used this variables interchangeably, so stale vf could point to different/not intended vf.
Remove redundant "v" variable and iterate via single VF pointer across whole function instead to guarantee VF pointer validity.
References
- https://access.redhat.com/security/cve/CVE-2024-36020
- https://git.kernel.org/stable/c/06df7618f591b2dc43c59967e294d7b9fc8675b6
- https://git.kernel.org/stable/c/0dcf573f997732702917af1563aa2493dc772fc0
- https://git.kernel.org/stable/c/3e89846283f3cf7c7a8e28b342576fd7c561d2ba
- https://git.kernel.org/stable/c/951d2748a2a8242853abc3d0c153ce4bf8faad31
- https://git.kernel.org/stable/c/9dcf0fcb80f6aeb01469e3c957f8d4c97365450a
- https://git.kernel.org/stable/c/b8e82128b44fa40bf99a50b919488ef361e1683c
- https://git.kernel.org/stable/c/cc9cd02dd9e8b7764ea9effb24f4f1dd73d1b23d
- https://git.kernel.org/stable/c/f37c4eac99c258111d414d31b740437e1925b8e8
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html