High 7.8Published Jul 19, 2026

CVE-2026-63930iio: buffer: hw-consumer: fix use-after-free in error path

Updated under an hour ago (Oct 28, 2026, 11:50 AM ET)

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Exploited in the last 30 days

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().

CVSS: 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Awaiting Analysis
Record last updated: Aug 5, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 48b66f8f936f369bb1a43c12aedbfeb2975baf4c before b71893c57730809c222766e5718bb33610f11963; 48b66f8f936f369bb1a43c12aedbfeb2975baf4c builds before 2ff615fc455acda5425c4900160cbe11cfea4449; from 48b66f8f936f369bb1a43c12aedbfeb2975baf4c before d2759d49860b9a39b5cde2fb88e4b822ddf5f58f; from 48b66f8f936f369bb1a43c12aedbfeb2975baf4c before 29783e6b6ec0b7152a15e53a063f17537e81177d; from 48b66f8f936f369bb1a43c12aedbfeb2975baf4c before e965627f0d442bfcae3f496c90cb653fb0917a61; from 48b66f8f936f369bb1a43c12aedbfeb2975baf4c before a3763ae33476328cf8d661742deb9daec78eac96; from 48b66f8f936f369bb1a43c12aedbfeb2975baf4c before 9319c94f63ed10723afd738d79f5617daba87cc8; 48b66f8f936f369bb1a43c12aedbfeb2975baf4c builds before 6f5ed4f2c7c83f33344e0ba179f72a12e5dad4a4	CNA record

References

References

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.