Improper Locking Affecting kernel-rt package, versions *
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Test your applications- Snyk ID SNYK-RHEL7-KERNELRT-7665217
- published 9 Aug 2024
- disclosed 7 Aug 2024
Introduced: 7 Aug 2024
CVE-2024-42250 Open this link in a new tabHow to fix?
There is no fixed version for RHEL:7 kernel-rt.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-rt package and not the kernel-rt package as distributed by RHEL.
See How to fix? for RHEL:7 relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
cachefiles: add missing lock protection when polling
Add missing lock protection in poll routine when iterating xarray, otherwise:
Even with RCU read lock held, only the slot of the radix tree is ensured to be pinned there, while the data structure (e.g. struct cachefiles_req) stored in the slot has no such guarantee. The poll routine will iterate the radix tree and dereference cachefiles_req accordingly. Thus RCU read lock is not adequate in this case and spinlock is needed here.
References
- https://access.redhat.com/security/cve/CVE-2024-42250
- https://git.kernel.org/stable/c/6bb6bd3dd6f382dfd36220d4b210a0c77c066651
- https://git.kernel.org/stable/c/8eadcab7f3dd809edbe5ae20533ff843dfea3a07
- https://git.kernel.org/stable/c/97cfd5e20ddc2e33e16ce369626ce76c9a475fd7
- https://git.kernel.org/stable/c/cf5bb09e742a9cf6349127e868329a8f69b7a014