{"cve":"CVE-2026-43019","nvd":{"published":"2026-05-01T15:16:46.103","modified":"2026-10-19T20:18:00.497","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_conn: fix potential UAF in set_cig_params_sync\n\nhci_conn lookup and field access must be covered by hdev lock in\nset_cig_params_sync, otherwise it's possible it is freed concurrently.\n\nTake hdev lock to prevent hci_conn from being deleted or modified\nconcurrently.  Just RCU lock is not suitable here, as we also want to\navoid \"tearing\" in the configuration.","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","CWE-362"],"references":["https://git.kernel.org/stable/c/66d432e9b45bae7881ffcdb12cd8fd0bf254ef02","https://git.kernel.org/stable/c/7502c1cf303b69f71d085f5ff7251b0e1b0f09df","https://git.kernel.org/stable/c/7d568fede8eac91161a60b710aa920abe9b0fb9f","https://git.kernel.org/stable/c/a2639a7f0f5bf7d73f337f8f077c19415c62ed2c","https://git.kernel.org/stable/c/bad65b4b0a96139f023eadc28a33125963208449"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-21T03:43:09.190223697+00:00"},"epss":{"cve":"CVE-2026-43019","score":0.001,"percentile":0.00824,"date":"2026-10-25"},"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."]}