HighFix available
iio: buffer: hw-consumer: fix use-after-free in error path
Type: advisorySources: OSV
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().
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.259, 5.15.210, 6.1.176, 6.12.93, 6.18.35, 6.6.143, 7.0.12
- CVEs
- CVE-2026-63930
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 7 Nov 2026, 00:35 UTC · Revision 1
Source evidence
iio: buffer: hw-consumer: fix use-after-free in error path
core-osv · Original sourcePublished 19 Jul 2026, 14:55 UTC
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().
osv:CVE-2026-63930
Kernel
Fixed versions: 5.10.259, 5.15.210, 6.1.176, 6.6.143, 6.12.93, 6.18.35, 7.0.12
Complete source record
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"url": "https://osv.dev/vulnerability/CVE-2026-63930",
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"title": "iio: buffer: hw-consumer: fix use-after-free in error path",
"summary": "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().",
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"source_id": "core-osv",
"document_id": 516660,
"published_at": "2026-07-19T14:55:30.016+00:00"
}