CVE-2026-63930

Last refreshed2026-10-30

Status: UPDATED | Advisory ID: CVE-2026-63930

Key Details

CVE	CVE-2026-63930
CVSS Score / Version	7.8 (High) / CVSS v3.1
Updated	2026-10-30
CVSS Vector	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`
CVSS Prose	attack vector is local; attack complexity is low; privileges required is low; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected products	Linux Kernel
Classified as	CWE-416 (Use After Free)

Vendor	Product	Affected Versions	Patch Status
Linux	Linux Kernel

Vendor

Product

Affected Versions

Patch Status

Linux

Linux Kernel

Subsystems	OT Supporting Infrastructure
Sectors	All Sectors

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(). (NVD)

Monitor Linux's web page for any future patch releases.

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-63930
CVE	https://www.cve.org/CVERecord?id=CVE-2026-63930

Source

Reference

NVD

CVE