CVE-2023-54279
Published Dec 30, 2025
Modified Apr 15, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: MIPS: fw: Allow firmware to pass a empty env fw_getenv will use env entry to determine style of env, however it is legal for firmware to just pass a empty list. Check if first entry exist before running strchr to avoid null pointer dereference.
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References
Other References
https://git.kernel.org/stable/c/0f91290774c798199ba4b8df93de5c3156b5163d
https://git.kernel.org/stable/c/3ef93b7bd9e042db240843f24a80e14da38c6830
https://git.kernel.org/stable/c/47e61cadc7a5f3dffd42d2d6fda81be163f1ab82
https://git.kernel.org/stable/c/830181ddced5a05a711dc9da8043203b1f33a77e
https://git.kernel.org/stable/c/a6b54af407873227caef6262e992f5422cdcb6ae
https://git.kernel.org/stable/c/ad79828f133e98585ab2236cad04a55eb7141bbe
https://git.kernel.org/stable/c/aeed787bbbbe1b842beec9a065a36c915226f704
https://git.kernel.org/stable/c/ee1809ed7bc456a72dc8410b475b73021a3a68d5
https://git.kernel.org/stable/c/f334b31625683418aaa2a335470eec950a95a254
Frequently Asked Questions
What is CVE-2023-54279? +
In the Linux kernel, the following vulnerability has been resolved:
MIPS: fw: Allow firmware to pass a empty env
fw_getenv will use env entry to determine style of env,
however it is legal for firmware to just pass a empty list.
Check if first entry exist before running strchr to avoid
null pointer dereference.
How do I check if I'm vulnerable to CVE-2023-54279? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.