Answer in brief
CVE-2026-63930 records a High severity (CVSS 7.8) 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.
CVSS is 7.8. 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.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:7.1:rc5:*:*:*:*:*:* | Not reported | Not reported |
| 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
Oct 30, 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.