{"id":"DEBIAN-CVE-2025-38324","details":"In the Linux kernel, the following vulnerability has been resolved:  mpls: Use rcu_dereference_rtnl() in mpls_route_input_rcu().  As syzbot reported [0], mpls_route_input_rcu() can be called from mpls_getroute(), where is under RTNL.  net-\u003empls.platform_label is only updated under RTNL.  Let's use rcu_dereference_rtnl() in mpls_route_input_rcu() to silence the splat.  [0]: WARNING: suspicious RCU usage 6.15.0-rc7-syzkaller-00082-g5cdb2c77c4c3 #0 Not tainted  ---------------------------- net/mpls/af_mpls.c:84 suspicious rcu_dereference_check() usage!  other info that might help us debug this:  rcu_scheduler_active = 2, debug_locks = 1 1 lock held by syz.2.4451/17730:  #0: ffffffff9012a3e8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline]  #0: ffffffff9012a3e8 (rtnl_mutex){+.+.}-{4:4}, at: rtnetlink_rcv_msg+0x371/0xe90 net/core/rtnetlink.c:6961  stack backtrace: CPU: 1 UID: 0 PID: 17730 Comm: syz.2.4451 Not tainted 6.15.0-rc7-syzkaller-00082-g5cdb2c77c4c3 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace:  \u003cTASK\u003e  __dump_stack lib/dump_stack.c:94 [inline]  dump_stack_lvl+0x16c/0x1f0 lib/dump_stack.c:120  lockdep_rcu_suspicious+0x166/0x260 kernel/locking/lockdep.c:6865  mpls_route_input_rcu+0x1d4/0x200 net/mpls/af_mpls.c:84  mpls_getroute+0x621/0x1ea0 net/mpls/af_mpls.c:2381  rtnetlink_rcv_msg+0x3c9/0xe90 net/core/rtnetlink.c:6964  netlink_rcv_skb+0x16d/0x440 net/netlink/af_netlink.c:2534  netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline]  netlink_unicast+0x53a/0x7f0 net/netlink/af_netlink.c:1339  netlink_sendmsg+0x8d1/0xdd0 net/netlink/af_netlink.c:1883  sock_sendmsg_nosec net/socket.c:712 [inline]  __sock_sendmsg net/socket.c:727 [inline]  ____sys_sendmsg+0xa98/0xc70 net/socket.c:2566  ___sys_sendmsg+0x134/0x1d0 net/socket.c:2620  __sys_sendmmsg+0x200/0x420 net/socket.c:2709  __do_sys_sendmmsg net/socket.c:2736 [inline]  __se_sys_sendmmsg net/socket.c:2733 [inline]  __x64_sys_sendmmsg+0x9c/0x100 net/socket.c:2733  do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]  do_syscall_64+0xcd/0x230 arch/x86/entry/syscall_64.c:94  entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f0a2818e969 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f0a28f52038 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00007f0a283b5fa0 RCX: 00007f0a2818e969 RDX: 0000000000000003 RSI: 0000200000000080 RDI: 0000000000000003 RBP: 00007f0a28210ab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f0a283b5fa0 R15: 00007ffce5e9f268  \u003c/TASK\u003e","modified":"2026-09-01T16:06:14.192721598Z","published":"2025-07-10T09:15:26.520Z","upstream":["CVE-2025-38324"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2025-38324"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.147-1"}]}],"versions":["6.1.106-1","6.1.106-2","6.1.106-3","6.1.112-1","6.1.115-1","6.1.119-1","6.1.123-1","6.1.124-1","6.1.128-1","6.1.129-1","6.1.133-1","6.1.135-1","6.1.137-1","6.1.139-1","6.1.140-1","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-2025-38324.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.12.35-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-38324.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.12.35-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-38324.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"}]}