Bug 2426205 (CVE-2023-54279) - CVE-2023-54279 kernel: MIPS: fw: Allow firmware to pass a empty env
Summary: CVE-2023-54279 kernel: MIPS: fw: Allow firmware to pass a empty env
Keywords:
Status: NEW
Alias: CVE-2023-54279
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-12-30 13:16 UTC by OSIDB Bzimport
Modified: 2025-12-31 01:35 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2025-12-30 13:16:18 UTC 
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.
Comment 1 Alexander B 2025-12-31 01:31:53 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025123003-CVE-2023-54279-1dfa@gregkh/T
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