Shodan
Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2025-39816

In the Linux kernel, the following vulnerability has been resolved: io_uring/kbuf: always use READ_ONCE() to read ring provided buffer lengths Since the buffers are mapped from userspace, it is prudent to use READ_ONCE() to read the value into a local variable, and use that for any other actions taken. Having a stable read of the buffer length avoids worrying about it changing after checking, or being read multiple times. Similarly, the buffer may well change in between it being picked and being committed. Ensure the looping for incremental ring buffer commit stops if it hits a zero sized buffer, as no further progress can be made at that point.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 5.8%
CVSS Severity
CVSS v3 Score 5.5
Products affected by CVE-2025-39816


Products
Pricing
Contact Us

Shodan ® - All rights reserved