CVE-2026-63930
HIGH
7.8
CVSS 3.1
Description
In the Linux kernel, the following vulnerability has been resolved:
iio: buffer: hw-consumer: fix use-after-free in error path
In the err_put_buffers cleanup path of iio_hw_consumer_alloc(), the code
was using list_for_each_entry() to iterate through buffers while calling
iio_buffer_put() which can free the current buffer if refcount drops to 0.
The list_for_each_entry() loop macro then evaluates buf->head.next to
continue iteration, accessing the freed buffer.
Fix this by using list_for_each_entry_safe().
Metadata
Severity & Metrics
7.8
HIGH CVSS 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products (2)
| Vendor | Product | Platform | Versions |
|---|---|---|---|
| Linux | Linux | — | 48b66f8f936f369bb1a43c12aedbfeb2975baf4c < b71893c57730809c222766e5718bb33610f11963, 48b66f8f936f369bb1a43c12aedbfeb2975baf4c < 2ff615fc455acda5425c4900160cbe11cfea4449, 48b66f8f936f369bb1a43c12aedbfeb2975baf4c < d2759d49860b9a39b5cde2fb88e4b822ddf5f58f, 48b66f8f936f369bb1a43c12aedbfeb2975baf4c < 29783e6b6ec0b7152a15e53a063f17537e81177d … |
| Linux | Linux | — | 4.16, 0 < 4.16, 5.10.259 ≤ 5.10.*, 5.15.210 ≤ 5.15.* … |
CVSS scores (1)
| Score | Severity | Version | Source | Vector |
|---|---|---|---|---|
| 7.8 | HIGH | 3.1 | cna | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
References (8)
- https://git.kernel.org/stable/c/b71893c57730809c222766e5718bb33610f11963
- https://git.kernel.org/stable/c/2ff615fc455acda5425c4900160cbe11cfea4449
- https://git.kernel.org/stable/c/d2759d49860b9a39b5cde2fb88e4b822ddf5f58f
- https://git.kernel.org/stable/c/29783e6b6ec0b7152a15e53a063f17537e81177d
- https://git.kernel.org/stable/c/e965627f0d442bfcae3f496c90cb653fb0917a61
- https://git.kernel.org/stable/c/a3763ae33476328cf8d661742deb9daec78eac96
- https://git.kernel.org/stable/c/9319c94f63ed10723afd738d79f5617daba87cc8
- https://git.kernel.org/stable/c/6f5ed4f2c7c83f33344e0ba179f72a12e5dad4a4