{"apiVersion":"1.0","identifier":"CVE-2026-74535","description":"In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: avoid deadlocks in iso_sock_timeout iso_sock_timeout() takes lock_sock, so sync disabling the timer while holding that lock may deadlock. iso_sock_timeout() may also run concurrently with iso_conn_del(), which leads to UAF [Task 1] [Task hdev->workqueue] iso_sock_timeout iso_conn_del iso_conn_hold_unless_zero iso_chan_del `------------> iso_conn_put caller frees hcon iso_conn_put iso_conn_free conn->hcon->iso_data = NULL; /* UAF */ Fix the deadlock by removing the disable from the lock_sock sections. Move the timer from iso_conn to iso_pinfo to decouple it from iso_conn which may need to be freed in lock_sock section. Convert some of the clear_timer to disable_timer.","publishedAt":"2026-08-15T13:17:58","lastModifiedAt":"2026-08-17T06:19:50","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-74535","cvssScore":8.8,"cvssVector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","epssProbability":0.00241,"riskScore":0.9,"affectedProduct":"Linux kernel","affectedVersions":"unknown","vulnerabilityType":"Kernel","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-74535","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-74535","en":"https://www.redsauce.net/en/cves/CVE-2026-74535","fr":"https://www.redsauce.net/fr/cves/CVE-2026-74535","pt":"https://www.redsauce.net/pt/cves/CVE-2026-74535","de":"https://www.redsauce.net/de/cves/CVE-2026-74535","sk":"https://www.redsauce.net/sk/cves/CVE-2026-74535","el":"https://www.redsauce.net/el/cves/CVE-2026-74535"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-74535"}}