Answer in brief
CVE-2026-63930 records a Unknown severity vulnerability in iio: buffer: hw-consumer: fix use-after-free in error path. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
Answer in brief
CVE-2026-63930 records a Unknown severity vulnerability in iio: buffer: hw-consumer: fix use-after-free in error path. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=48b66f8f936f369bb1a43c12aedbfeb2975baf4c <b71893c57730809c222766e5718bb33610f11963 || >=48b66f8f936f369bb1a43c12aedbfeb2975baf4c <2ff615fc455acda5425c4900160cbe11cfea4449 || >=48b66f8f936f369bb1a43c12aedbfeb2975baf4c <d2759d49860b9a39b5cde2fb88e4b822ddf5f58f || >=48b66f8f936f369bb1a43c12aedbfeb2975baf4c <29783e6b6ec0b7152a15e53a063f17537e81177d || >=48b66f8f936f369bb1a43c12aedbfeb2975baf4c <e965627f0d442bfcae3f496c90cb653fb0917a61 || >=48b66f8f936f369bb1a43c12aedbfeb2975baf4c <a3763ae33476328cf8d661742deb9daec78eac96 || >=48b66f8f936f369bb1a43c12aedbfeb2975baf4c <9319c94f63ed10723afd738d79f5617daba87cc8 || >=48b66f8f936f369bb1a43c12aedbfeb2975baf4c <6f5ed4f2c7c83f33344e0ba179f72a12e5dad4a4 | b71893c57730809c222766e5718bb33610f11963, 2ff615fc455acda5425c4900160cbe11cfea4449, d2759d49860b9a39b5cde2fb88e4b822ddf5f58f, 29783e6b6ec0b7152a15e53a063f17537e81177d, e965627f0d442bfcae3f496c90cb653fb0917a61, a3763ae33476328cf8d661742deb9daec78eac96, 9319c94f63ed10723afd738d79f5617daba87cc8, 6f5ed4f2c7c83f33344e0ba179f72a12e5dad4a4 |
| Linux/Linuxgeneric | 4.16 | Not reported |
Published upstream
Jul 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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().
Quoted source text, attributed separately from HOL analysis.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=48b66f8f936f369bb1a43c12aedbfeb2975baf4c <b71893c57730809c222766e5718bb33610f11963 || >=48b66f8f936f369bb1a43c12aedbfeb2975baf4c <2ff615fc455acda5425c4900160cbe11cfea4449 || >=48b66f8f936f369bb1a43c12aedbfeb2975baf4c <d2759d49860b9a39b5cde2fb88e4b822ddf5f58f || >=48b66f8f936f369bb1a43c12aedbfeb2975baf4c <29783e6b6ec0b7152a15e53a063f17537e81177d || >=48b66f8f936f369bb1a43c12aedbfeb2975baf4c <e965627f0d442bfcae3f496c90cb653fb0917a61 || >=48b66f8f936f369bb1a43c12aedbfeb2975baf4c <a3763ae33476328cf8d661742deb9daec78eac96 || >=48b66f8f936f369bb1a43c12aedbfeb2975baf4c <9319c94f63ed10723afd738d79f5617daba87cc8 || >=48b66f8f936f369bb1a43c12aedbfeb2975baf4c <6f5ed4f2c7c83f33344e0ba179f72a12e5dad4a4 | b71893c57730809c222766e5718bb33610f11963, 2ff615fc455acda5425c4900160cbe11cfea4449, d2759d49860b9a39b5cde2fb88e4b822ddf5f58f, 29783e6b6ec0b7152a15e53a063f17537e81177d, e965627f0d442bfcae3f496c90cb653fb0917a61, a3763ae33476328cf8d661742deb9daec78eac96, 9319c94f63ed10723afd738d79f5617daba87cc8, 6f5ed4f2c7c83f33344e0ba179f72a12e5dad4a4 |
| Linux/Linuxgeneric | 4.16 | Not reported |
Published upstream
Jul 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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().
Quoted source text, attributed separately from HOL analysis.