CVE-2023-54279
MIPS: fw: Allow firmware to pass a empty env
Vexday Risk Score
3Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS —EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —
Lifecycle
30 Dec 2025Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
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.
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/0f91290774c798199ba4b8df93de5c3156b5163dhttps://git.kernel.org/stable/c/3ef93b7bd9e042db240843f24a80e14da38c6830https://git.kernel.org/stable/c/47e61cadc7a5f3dffd42d2d6fda81be163f1ab82https://git.kernel.org/stable/c/830181ddced5a05a711dc9da8043203b1f33a77ehttps://git.kernel.org/stable/c/a6b54af407873227caef6262e992f5422cdcb6aehttps://git.kernel.org/stable/c/ad79828f133e98585ab2236cad04a55eb7141bbehttps://git.kernel.org/stable/c/aeed787bbbbe1b842beec9a065a36c915226f704https://git.kernel.org/stable/c/ee1809ed7bc456a72dc8410b475b73021a3a68d5https://git.kernel.org/stable/c/f334b31625683418aaa2a335470eec950a95a254