{"cve":"CVE-2026-63930","nvd":{"published":"2026-07-19T16:17:11.380","modified":"2026-10-30T14:28:54.070","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\niio: buffer: hw-consumer: fix use-after-free in error path\n\nIn the err_put_buffers cleanup path of iio_hw_consumer_alloc(), the code\nwas using list_for_each_entry() to iterate through buffers while calling\niio_buffer_put() which can free the current buffer if refcount drops to 0.\nThe list_for_each_entry() loop macro then evaluates buf->head.next to\ncontinue iteration, accessing the freed buffer.\n\nFix this by using list_for_each_entry_safe().","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8},"cwes":["CWE-416"],"references":["https://git.kernel.org/stable/c/29783e6b6ec0b7152a15e53a063f17537e81177d","https://git.kernel.org/stable/c/2ff615fc455acda5425c4900160cbe11cfea4449","https://git.kernel.org/stable/c/6f5ed4f2c7c83f33344e0ba179f72a12e5dad4a4","https://git.kernel.org/stable/c/9319c94f63ed10723afd738d79f5617daba87cc8","https://git.kernel.org/stable/c/a3763ae33476328cf8d661742deb9daec78eac96"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-30T14:49:48.263840089+00:00"},"epss":{"cve":"CVE-2026-63930","score":0.0016,"percentile":0.05091,"date":"2026-10-30"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}