{"id":"DEBIAN-CVE-2024-56556","details":"In the Linux kernel, the following vulnerability has been resolved:  binder: fix node UAF in binder_add_freeze_work()  In binder_add_freeze_work() we iterate over the proc-\u003enodes with the proc-\u003einner_lock held. However, this lock is temporarily dropped in order to acquire the node-\u003elock first (lock nesting order). This can race with binder_node_release() and trigger a use-after-free:    ==================================================================   BUG: KASAN: slab-use-after-free in _raw_spin_lock+0xe4/0x19c   Write of size 4 at addr ffff53c04c29dd04 by task freeze/640    CPU: 5 UID: 0 PID: 640 Comm: freeze Not tainted 6.11.0-07343-ga727812a8d45 #17   Hardware name: linux,dummy-virt (DT)   Call trace:    _raw_spin_lock+0xe4/0x19c    binder_add_freeze_work+0x148/0x478    binder_ioctl+0x1e70/0x25ac    __arm64_sys_ioctl+0x124/0x190    Allocated by task 637:    __kmalloc_cache_noprof+0x12c/0x27c    binder_new_node+0x50/0x700    binder_transaction+0x35ac/0x6f74    binder_thread_write+0xfb8/0x42a0    binder_ioctl+0x18f0/0x25ac    __arm64_sys_ioctl+0x124/0x190    Freed by task 637:    kfree+0xf0/0x330    binder_thread_read+0x1e88/0x3a68    binder_ioctl+0x16d8/0x25ac    __arm64_sys_ioctl+0x124/0x190   ==================================================================  Fix the race by taking a temporary reference on the node before releasing the proc-\u003einner lock. This ensures the node remains alive while in use.","modified":"2026-09-15T09:03:15.738400682Z","published":"2024-12-27T15:15:14.410Z","upstream":["CVE-2024-56556"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2024-56556"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.12.5-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2024-56556.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.12.5-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2024-56556.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}