{"apiVersion":"1.0","identifier":"CVE-2026-74537","description":"In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: hold sk properly in iso_conn_ready sk deref in iso_conn_ready must be done either under conn->lock, or holding a refcount, to avoid concurrent close. conn->sk is currently accessed without either: [Task 1] [Task 2] iso_sock_release iso_conn_ready sk = conn->sk lock_sock(sk) conn->sk = NULL lock_sock(sk) release_sock(sk) iso_sock_kill(sk) UAF on sk deref Fix possible UAF by holding sk refcount in iso_conn_ready(). Also recheck after lock_sock that the socket is still valid. Adjust locking so conn->sk is cleared only under lock_sock.","publishedAt":"2026-08-15T13:17:59","lastModifiedAt":"2026-08-17T06:19:50","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-74537","cvssScore":8.8,"cvssVector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","epssProbability":0.00239,"riskScore":0.9,"affectedProduct":"Linux kernel","affectedVersions":"unknown","vulnerabilityType":"Kernel","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-74537","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-74537","en":"https://www.redsauce.net/en/cves/CVE-2026-74537","fr":"https://www.redsauce.net/fr/cves/CVE-2026-74537","pt":"https://www.redsauce.net/pt/cves/CVE-2026-74537","de":"https://www.redsauce.net/de/cves/CVE-2026-74537","sk":"https://www.redsauce.net/sk/cves/CVE-2026-74537","el":"https://www.redsauce.net/el/cves/CVE-2026-74537"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-74537"}}