CVE-2026-63930
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
19/07/2026
Last modified:
27/07/2026
Description
In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
iio: buffer: hw-consumer: fix use-after-free in error path<br />
<br />
In the err_put_buffers cleanup path of iio_hw_consumer_alloc(), the code<br />
was using list_for_each_entry() to iterate through buffers while calling<br />
iio_buffer_put() which can free the current buffer if refcount drops to 0.<br />
The list_for_each_entry() loop macro then evaluates buf->head.next to<br />
continue iteration, accessing the freed buffer.<br />
<br />
Fix this by using list_for_each_entry_safe().
Impact
Base Score 3.x
7.80
Severity 3.x
HIGH
References to Advisories, Solutions, and Tools
- https://git.kernel.org/stable/c/29783e6b6ec0b7152a15e53a063f17537e81177d
- https://git.kernel.org/stable/c/2ff615fc455acda5425c4900160cbe11cfea4449
- https://git.kernel.org/stable/c/6f5ed4f2c7c83f33344e0ba179f72a12e5dad4a4
- https://git.kernel.org/stable/c/9319c94f63ed10723afd738d79f5617daba87cc8
- https://git.kernel.org/stable/c/a3763ae33476328cf8d661742deb9daec78eac96
- https://git.kernel.org/stable/c/b71893c57730809c222766e5718bb33610f11963
- https://git.kernel.org/stable/c/d2759d49860b9a39b5cde2fb88e4b822ddf5f58f
- https://git.kernel.org/stable/c/e965627f0d442bfcae3f496c90cb653fb0917a61