Bug 2383899 (CVE-2025-38484)

Summary: CVE-2025-38484 kernel: iio: backend: fix out-of-bound write
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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OS: Linux   
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Description OSIDB Bzimport 2025-07-28 12:01:49 UTC 
In the Linux kernel, the following vulnerability has been resolved:

iio: backend: fix out-of-bound write

The buffer is set to 80 character. If a caller write more characters,
count is truncated to the max available space in "simple_write_to_buffer".
But afterwards a string terminator is written to the buffer at offset count
without boundary check. The zero termination is written OUT-OF-BOUND.

Add a check that the given buffer is smaller then the buffer to prevent.
Comment 1 Avinash Hanwate 2025-07-28 16:09:09 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025072815-CVE-2025-38484-4faf@gregkh/T