Resource Exhaustion Affecting kernel-debug package, versions <0:4.18.0-553.16.1.el8_10
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Test your applications- Snyk ID SNYK-RHEL8-KERNELDEBUG-7329235
- published 21 Jun 2024
- disclosed 19 Jun 2024
How to fix?
Upgrade RHEL:8 kernel-debug to version 0:4.18.0-553.16.1.el8_10 or higher.
This issue was patched in RHSA-2024:5101.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-debug package and not the kernel-debug package as distributed by RHEL.
See How to fix? for RHEL:8 relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
wifi: brcmfmac: pcie: handle randbuf allocation failure
The kzalloc() in brcmf_pcie_download_fw_nvram() will return null if the physical memory has run out. As a result, if we use get_random_bytes() to generate random bytes in the randbuf, the null pointer dereference bug will happen.
In order to prevent allocation failure, this patch adds a separate function using buffer on kernel stack to generate random bytes in the randbuf, which could prevent the kernel stack from overflow.
References
- https://access.redhat.com/security/cve/CVE-2024-38575
- https://git.kernel.org/stable/c/0eb2c0528e232b3c32cde9d5e1c9f80ba2996e49
- https://git.kernel.org/stable/c/316f790ebcf94bdf59f794b7cdea4068dc676d4c
- https://git.kernel.org/stable/c/3729ca9e48d19a03ae049e2bde510e161c2f3720
- https://git.kernel.org/stable/c/7c15eb344b0d4d3468c9b2a7591ad2b859b29b88
- https://git.kernel.org/stable/c/c37466406f075476c2702ecc01917928af871f3b