{"id":"DEBIAN-CVE-2024-53160","details":"In the Linux kernel, the following vulnerability has been resolved:  rcu/kvfree: Fix data-race in __mod_timer / kvfree_call_rcu  KCSAN reports a data race when access the krcp-\u003emonitor_work.timer.expires variable in the schedule_delayed_monitor_work() function:  \u003csnip\u003e BUG: KCSAN: data-race in __mod_timer / kvfree_call_rcu  read to 0xffff888237d1cce8 of 8 bytes by task 10149 on cpu 1:  schedule_delayed_monitor_work kernel/rcu/tree.c:3520 [inline]  kvfree_call_rcu+0x3b8/0x510 kernel/rcu/tree.c:3839  trie_update_elem+0x47c/0x620 kernel/bpf/lpm_trie.c:441  bpf_map_update_value+0x324/0x350 kernel/bpf/syscall.c:203  generic_map_update_batch+0x401/0x520 kernel/bpf/syscall.c:1849  bpf_map_do_batch+0x28c/0x3f0 kernel/bpf/syscall.c:5143  __sys_bpf+0x2e5/0x7a0  __do_sys_bpf kernel/bpf/syscall.c:5741 [inline]  __se_sys_bpf kernel/bpf/syscall.c:5739 [inline]  __x64_sys_bpf+0x43/0x50 kernel/bpf/syscall.c:5739  x64_sys_call+0x2625/0x2d60 arch/x86/include/generated/asm/syscalls_64.h:322  do_syscall_x64 arch/x86/entry/common.c:52 [inline]  do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83  entry_SYSCALL_64_after_hwframe+0x77/0x7f  write to 0xffff888237d1cce8 of 8 bytes by task 56 on cpu 0:  __mod_timer+0x578/0x7f0 kernel/time/timer.c:1173  add_timer_global+0x51/0x70 kernel/time/timer.c:1330  __queue_delayed_work+0x127/0x1a0 kernel/workqueue.c:2523  queue_delayed_work_on+0xdf/0x190 kernel/workqueue.c:2552  queue_delayed_work include/linux/workqueue.h:677 [inline]  schedule_delayed_monitor_work kernel/rcu/tree.c:3525 [inline]  kfree_rcu_monitor+0x5e8/0x660 kernel/rcu/tree.c:3643  process_one_work kernel/workqueue.c:3229 [inline]  process_scheduled_works+0x483/0x9a0 kernel/workqueue.c:3310  worker_thread+0x51d/0x6f0 kernel/workqueue.c:3391  kthread+0x1d1/0x210 kernel/kthread.c:389  ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147  ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244  Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 56 Comm: kworker/u8:4 Not tainted 6.12.0-rc2-syzkaller-00050-g5b7c893ed5ed #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: events_unbound kfree_rcu_monitor \u003csnip\u003e  kfree_rcu_monitor() rearms the work if a \"krcp\" has to be still offloaded and this is done without holding krcp-\u003elock, whereas the kvfree_call_rcu() holds it.  Fix it by acquiring the \"krcp-\u003elock\" for kfree_rcu_monitor() so both functions do not race anymore.","modified":"2026-09-15T09:03:16.088517274Z","published":"2024-12-24T12:15:24.340Z","upstream":["CVE-2024-53160"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2024-53160"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.12.3-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2024-53160.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.12.3-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2024-53160.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:N/I:N/A:H"}]}