{"id":"DEBIAN-CVE-2024-53042","details":"In the Linux kernel, the following vulnerability has been resolved:  ipv4: ip_tunnel: Fix suspicious RCU usage warning in ip_tunnel_init_flow()  There are code paths from which the function is called without holding the RCU read lock, resulting in a suspicious RCU usage warning [1].  Fix by using l3mdev_master_upper_ifindex_by_index() which will acquire the RCU read lock before calling l3mdev_master_upper_ifindex_by_index_rcu().  [1] WARNING: suspicious RCU usage 6.12.0-rc3-custom-gac8f72681cf2 #141 Not tainted ----------------------------- net/core/dev.c:876 RCU-list traversed in non-reader section!!  other info that might help us debug this:  rcu_scheduler_active = 2, debug_locks = 1 1 lock held by ip/361:  #0: ffffffff86fc7cb0 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x377/0xf60  stack backtrace: CPU: 3 UID: 0 PID: 361 Comm: ip Not tainted 6.12.0-rc3-custom-gac8f72681cf2 #141 Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 Call Trace:  \u003cTASK\u003e  dump_stack_lvl+0xba/0x110  lockdep_rcu_suspicious.cold+0x4f/0xd6  dev_get_by_index_rcu+0x1d3/0x210  l3mdev_master_upper_ifindex_by_index_rcu+0x2b/0xf0  ip_tunnel_bind_dev+0x72f/0xa00  ip_tunnel_newlink+0x368/0x7a0  ipgre_newlink+0x14c/0x170  __rtnl_newlink+0x1173/0x19c0  rtnl_newlink+0x6c/0xa0  rtnetlink_rcv_msg+0x3cc/0xf60  netlink_rcv_skb+0x171/0x450  netlink_unicast+0x539/0x7f0  netlink_sendmsg+0x8c1/0xd80  ____sys_sendmsg+0x8f9/0xc20  ___sys_sendmsg+0x197/0x1e0  __sys_sendmsg+0x122/0x1f0  do_syscall_64+0xbb/0x1d0  entry_SYSCALL_64_after_hwframe+0x77/0x7f","modified":"2026-10-01T11:03:24.884045058Z","published":"2024-11-19T18:15:24.737Z","upstream":["CVE-2024-53042"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2024-53042"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.119-1"}]}],"versions":["6.1.106-1","6.1.106-2","6.1.106-3","6.1.112-1","6.1.115-1","6.1.27-1","6.1.37-1","6.1.38-1","6.1.38-2","6.1.38-2~bpo11+1","6.1.38-3","6.1.38-4","6.1.38-4~bpo11+1","6.1.52-1","6.1.55-1","6.1.55-1~bpo11+1","6.1.64-1","6.1.66-1","6.1.67-1","6.1.69-1","6.1.69-1~bpo11+1","6.1.76-1","6.1.76-1~bpo11+1","6.1.82-1","6.1.85-1","6.1.90-1","6.1.90-1~bpo11+1","6.1.94-1","6.1.94-1~bpo11+1","6.1.98-1","6.1.99-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2024-53042.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.11.7-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2024-53042.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.11.7-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2024-53042.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"}]}