CVE-2025-39822: io_uring/kbuf: fix signedness in this_len calculation
In the Linux kernel, the following vulnerability has been resolved:
iouring/kbuf: fix signedness in thislen calculation
When importing and using buffers, buf->len is considered unsigned. However, buf->len is converted to signed int when committing. This can lead to unexpected behavior if the buffer is large enough to be interpreted as a negative value. Make mint calculation unsigned.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2025-39822?
CVE-2025-39822 is considered a medium severity vulnerability due to its potential impact on system stability and data integrity.
How do I fix CVE-2025-39822?
To fix CVE-2025-39822, update the Linux kernel to the latest stable version that includes the patch for this vulnerability.
What systems are affected by CVE-2025-39822?
CVE-2025-39822 affects the Linux kernel, particularly systems that utilize io_uring for buffer management.
What are the potential consequences of CVE-2025-39822?
Potential consequences of CVE-2025-39822 include unexpected behavior in applications using io_uring, leading to data corruption or application crashes.
Is there a known exploit for CVE-2025-39822?
As of the latest information, there are no publicly known exploits for CVE-2025-39822, but it is recommended to apply the patch promptly.