Heap-based Buffer Overflow Affecting kernel-core package, versions *
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Test your applications- Snyk ID SNYK-RHEL9-KERNELCORE-7581543
- published 5 Aug 2024
- disclosed 29 Jul 2024
Introduced: 29 Jul 2024
CVE-2024-41039 Open this link in a new tabHow to fix?
There is no fixed version for RHEL:9 kernel-core.
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:
firmware: cs_dsp: Fix overflow checking of wmfw header
Fix the checking that firmware file buffer is large enough for the wmfw header, to prevent overrunning the buffer.
The original code tested that the firmware data buffer contained enough bytes for the sums of the size of the structs
wmfw_header + wmfw_adsp1_sizes + wmfw_footer
But wmfw_adsp1_sizes is only used on ADSP1 firmware. For ADSP2 and Halo Core the equivalent struct is wmfw_adsp2_sizes, which is 4 bytes longer. So the length check didn't guarantee that there are enough bytes in the firmware buffer for a header with wmfw_adsp2_sizes.
This patch splits the length check into three separate parts. Each of the wmfw_header, wmfw_adsp?_sizes and wmfw_footer are checked separately before they are used.
References
- https://access.redhat.com/security/cve/CVE-2024-41039
- https://git.kernel.org/stable/c/3019b86bce16fbb5bc1964f3544d0ce7d0137278
- https://git.kernel.org/stable/c/49a79f344d0a17c6a5eef53716cc76fcdbfca9ba
- https://git.kernel.org/stable/c/9c9877a96e033bf6c6470b3b4f06106d91ace11e
- https://git.kernel.org/stable/c/fd035f0810b33c2a8792effdb82bf35920221565