CVE-2022-48810

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> ipmr,ip6mr: acquire RTNL before calling ip[6]mr_free_table() on failure path<br /> <br /> ip[6]mr_free_table() can only be called under RTNL lock.<br /> <br /> RTNL: assertion failed at net/core/dev.c (10367)<br /> WARNING: CPU: 1 PID: 5890 at net/core/dev.c:10367 unregister_netdevice_many+0x1246/0x1850 net/core/dev.c:10367<br /> Modules linked in:<br /> CPU: 1 PID: 5890 Comm: syz-executor.2 Not tainted 5.16.0-syzkaller-11627-g422ee58dc0ef #0<br /> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011<br /> RIP: 0010:unregister_netdevice_many+0x1246/0x1850 net/core/dev.c:10367<br /> Code: 0f 85 9b ee ff ff e8 69 07 4b fa ba 7f 28 00 00 48 c7 c6 00 90 ae 8a 48 c7 c7 40 90 ae 8a c6 05 6d b1 51 06 01 e8 8c 90 d8 01 0b e9 70 ee ff ff e8 3e 07 4b fa 4c 89 e7 e8 86 2a 59 fa e9 ee<br /> RSP: 0018:ffffc900046ff6e0 EFLAGS: 00010286<br /> RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000<br /> RDX: ffff888050f51d00 RSI: ffffffff815fa008 RDI: fffff520008dfece<br /> RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000<br /> R10: ffffffff815f3d6e R11: 0000000000000000 R12: 00000000fffffff4<br /> R13: dffffc0000000000 R14: ffffc900046ff750 R15: ffff88807b7dc000<br /> FS: 00007f4ab736e700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000<br /> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033<br /> CR2: 00007fee0b4f8990 CR3: 000000001e7d2000 CR4: 00000000003506e0<br /> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000<br /> DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400<br /> Call Trace:<br /> <br /> mroute_clean_tables+0x244/0xb40 net/ipv6/ip6mr.c:1509<br /> ip6mr_free_table net/ipv6/ip6mr.c:389 [inline]<br /> ip6mr_rules_init net/ipv6/ip6mr.c:246 [inline]<br /> ip6mr_net_init net/ipv6/ip6mr.c:1306 [inline]<br /> ip6mr_net_init+0x3f0/0x4e0 net/ipv6/ip6mr.c:1298<br /> ops_init+0xaf/0x470 net/core/net_namespace.c:140<br /> setup_net+0x54f/0xbb0 net/core/net_namespace.c:331<br /> copy_net_ns+0x318/0x760 net/core/net_namespace.c:475<br /> create_new_namespaces+0x3f6/0xb20 kernel/nsproxy.c:110<br /> copy_namespaces+0x391/0x450 kernel/nsproxy.c:178<br /> copy_process+0x2e0c/0x7300 kernel/fork.c:2167<br /> kernel_clone+0xe7/0xab0 kernel/fork.c:2555<br /> __do_sys_clone+0xc8/0x110 kernel/fork.c:2672<br /> do_syscall_x64 arch/x86/entry/common.c:50 [inline]<br /> do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80<br /> entry_SYSCALL_64_after_hwframe+0x44/0xae<br /> RIP: 0033:0x7f4ab89f9059<br /> Code: Unable to access opcode bytes at RIP 0x7f4ab89f902f.<br /> RSP: 002b:00007f4ab736e118 EFLAGS: 00000206 ORIG_RAX: 0000000000000038<br /> RAX: ffffffffffffffda RBX: 00007f4ab8b0bf60 RCX: 00007f4ab89f9059<br /> RDX: 0000000020000280 RSI: 0000000020000270 RDI: 0000000040200000<br /> RBP: 00007f4ab8a5308d R08: 0000000020000300 R09: 0000000020000300<br /> R10: 00000000200002c0 R11: 0000000000000206 R12: 0000000000000000<br /> R13: 00007ffc3977cc1f R14: 00007f4ab736e300 R15: 0000000000022000<br />