Race Condition Affecting kernel-core package, versions <0:5.14.0-284.75.1.el9_2
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Test your applications- Snyk ID SNYK-RHEL9-KERNELCORE-7559400
- published 25 Jul 2024
- disclosed 5 Apr 2024
Introduced: 5 Apr 2024
CVE-2024-26810 Open this link in a new tabHow to fix?
Upgrade RHEL:9 kernel-core to version 0:5.14.0-284.75.1.el9_2 or higher.
This issue was patched in RHSA-2024:4823.
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:
vfio/pci: Lock external INTx masking ops
Mask operations through config space changes to DisINTx may race INTx configuration changes via ioctl. Create wrappers that add locking for paths outside of the core interrupt code.
In particular, irq_type is updated holding igate, therefore testing is_intx() requires holding igate. For example clearing DisINTx from config space can otherwise race changes of the interrupt configuration.
This aligns interfaces which may trigger the INTx eventfd into two camps, one side serialized by igate and the other only enabled while INTx is configured. A subsequent patch introduces synchronization for the latter flows.
References
- https://access.redhat.com/security/cve/CVE-2024-26810
- https://git.kernel.org/stable/c/03505e3344b0576fd619416793a31eae9c5b73bf
- https://git.kernel.org/stable/c/04a4a017b9ffd7b0f427b8c376688d14cb614651
- https://git.kernel.org/stable/c/3fe0ac10bd117df847c93408a9d428a453cd60e5
- https://git.kernel.org/stable/c/6fe478d855b20ac1eb5da724afe16af5a2aaaa40
- https://git.kernel.org/stable/c/810cd4bb53456d0503cc4e7934e063835152c1b7
- https://git.kernel.org/stable/c/ec73e079729258a05452356cf6d098bf1504d5a6
- https://git.kernel.org/stable/c/1e71b6449d55179170efc8dee8664510bb813b42
- https://git.kernel.org/stable/c/3dd9be6cb55e0f47544e7cdda486413f7134e3b3
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html