CVE-2025-38082
HighCVSS 7.8Exploitation Probability (EPSS)
Low risk5th percentile - higher than 5% of all known CVEs
Summary
In the Linux kernel's GPIO virtuser driver, there is a lack of input size validation before writing to the buffer. The simple_write_to_buffer function truncates data but does not check if the input size exceeds the buffer size, potentially leading to out-of-bounds write.
Risk Assessment
An attacker could exploit this vulnerability to write beyond the allowed kernel memory area, potentially leading to data corruption or privilege escalation.
Recommendation
Apply the Linux kernel patch that adds input size checking and writes a null terminator at the end of the buffer.
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Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: gpio: virtuser: fix potential out-of-bound write If the caller wrote more characters, count is truncated to the max available space in "simple_write_to_buffer". Check that the input size does not exceed the buffer size. Write a zero termination afterwards.