CVE-2024-36019 Affecting kernel-rt-debug package, versions <0:5.14.0-427.35.1.el9_4
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Test your applications- Snyk ID SNYK-ALMALINUX9-KERNELRTDEBUG-8337370
- published 4 Nov 2024
- disclosed 11 Sep 2024
Introduced: 11 Sep 2024
CVE-2024-36019 Open this link in a new tabHow to fix?
Upgrade AlmaLinux:9 kernel-rt-debug to version 0:5.14.0-427.35.1.el9_4 or higher.
This issue was patched in ALSA-2024:6567.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-rt-debug package and not the kernel-rt-debug package as distributed by AlmaLinux.
See How to fix? for AlmaLinux:9 relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
regmap: maple: Fix cache corruption in regcache_maple_drop()
When keeping the upper end of a cache block entry, the entry[] array must be indexed by the offset from the base register of the block, i.e. max - mas.index.
The code was indexing entry[] by only the register address, leading to an out-of-bounds access that copied some part of the kernel memory over the cache contents.
This bug was not detected by the regmap KUnit test because it only tests with a block of registers starting at 0, so mas.index == 0.
References
- https://errata.almalinux.org/9/ALSA-2024-6567.html
- https://access.redhat.com/security/cve/CVE-2024-36019
- https://access.redhat.com/errata/RHSA-2024:6567
- https://git.kernel.org/stable/c/00bb549d7d63a21532e76e4a334d7807a54d9f31
- https://git.kernel.org/stable/c/3af6c5ac72dc5b721058132a0a1d7779e443175e
- https://git.kernel.org/stable/c/51c4440b9d3fd7c8234e6de9170a487c03506e53