{"id":"DEBIAN-CVE-2024-56654","details":"In the Linux kernel, the following vulnerability has been resolved:  Bluetooth: hci_event: Fix using rcu_read_(un)lock while iterating  The usage of rcu_read_(un)lock while inside list_for_each_entry_rcu is not safe since for the most part entries fetched this way shall be treated as rcu_dereference:  \tNote that the value returned by rcu_dereference() is valid \tonly within the enclosing RCU read-side critical section [1]_. \tFor example, the following is **not** legal::  \t\trcu_read_lock(); \t\tp = rcu_dereference(head.next); \t\trcu_read_unlock(); \t\tx = p-\u003eaddress;\t/* BUG!!! */ \t\trcu_read_lock(); \t\ty = p-\u003edata;\t/* BUG!!! */ \t\trcu_read_unlock();","modified":"2026-09-15T09:03:17.035369768Z","published":"2024-12-27T15:15:25.237Z","upstream":["CVE-2024-56654"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2024-56654"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.12.6-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2024-56654.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.12.6-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2024-56654.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}