{"id":"CVE-2024-36901","summary":"ipv6: prevent NULL dereference in ip6_output()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: prevent NULL dereference in ip6_output()\n\nAccording to syzbot, there is a chance that ip6_dst_idev()\nreturns NULL in ip6_output(). Most places in IPv6 stack\ndeal with a NULL idev just fine, but not here.\n\nsyzbot reported:\n\ngeneral protection fault, probably for non-canonical address 0xdffffc00000000bc: 0000 [#1] PREEMPT SMP KASAN PTI\nKASAN: null-ptr-deref in range [0x00000000000005e0-0x00000000000005e7]\nCPU: 0 PID: 9775 Comm: syz-executor.4 Not tainted 6.9.0-rc5-syzkaller-00157-g6a30653b604a #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024\n RIP: 0010:ip6_output+0x231/0x3f0 net/ipv6/ip6_output.c:237\nCode: 3c 1e 00 49 89 df 74 08 4c 89 ef e8 19 58 db f7 48 8b 44 24 20 49 89 45 00 49 89 c5 48 8d 9d e0 05 00 00 48 89 d8 48 c1 e8 03 \u003c42\u003e 0f b6 04 38 84 c0 4c 8b 74 24 28 0f 85 61 01 00 00 8b 1b 31 ff\nRSP: 0018:ffffc9000927f0d8 EFLAGS: 00010202\nRAX: 00000000000000bc RBX: 00000000000005e0 RCX: 0000000000040000\nRDX: ffffc900131f9000 RSI: 0000000000004f47 RDI: 0000000000004f48\nRBP: 0000000000000000 R08: ffffffff8a1f0b9a R09: 1ffffffff1f51fad\nR10: dffffc0000000000 R11: fffffbfff1f51fae R12: ffff8880293ec8c0\nR13: ffff88805d7fc000 R14: 1ffff1100527d91a R15: dffffc0000000000\nFS:  00007f135c6856c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000000020000080 CR3: 0000000064096000 CR4: 00000000003506f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n \u003cTASK\u003e\n  NF_HOOK include/linux/netfilter.h:314 [inline]\n  ip6_xmit+0xefe/0x17f0 net/ipv6/ip6_output.c:358\n  sctp_v6_xmit+0x9f2/0x13f0 net/sctp/ipv6.c:248\n  sctp_packet_transmit+0x26ad/0x2ca0 net/sctp/output.c:653\n  sctp_packet_singleton+0x22c/0x320 net/sctp/outqueue.c:783\n  sctp_outq_flush_ctrl net/sctp/outqueue.c:914 [inline]\n  sctp_outq_flush+0x6d5/0x3e20 net/sctp/outqueue.c:1212\n  sctp_side_effects net/sctp/sm_sideeffect.c:1198 [inline]\n  sctp_do_sm+0x59cc/0x60c0 net/sctp/sm_sideeffect.c:1169\n  sctp_primitive_ASSOCIATE+0x95/0xc0 net/sctp/primitive.c:73\n  __sctp_connect+0x9cd/0xe30 net/sctp/socket.c:1234\n  sctp_connect net/sctp/socket.c:4819 [inline]\n  sctp_inet_connect+0x149/0x1f0 net/sctp/socket.c:4834\n  __sys_connect_file net/socket.c:2048 [inline]\n  __sys_connect+0x2df/0x310 net/socket.c:2065\n  __do_sys_connect net/socket.c:2075 [inline]\n  __se_sys_connect net/socket.c:2072 [inline]\n  __x64_sys_connect+0x7a/0x90 net/socket.c:2072\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n  do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f","modified":"2026-03-20T12:36:50.866900Z","published":"2024-05-30T15:29:03.727Z","related":["ALSA-2024:7000","ALSA-2024:7001","MGASA-2024-0263","MGASA-2024-0266","SUSE-SU-2024:2802-1","SUSE-SU-2024:2892-1","SUSE-SU-2024:2894-1","SUSE-SU-2024:2896-1","SUSE-SU-2024:2901-1","SUSE-SU-2024:2939-1","SUSE-SU-2024:2940-1","SUSE-SU-2024:2947-1","SUSE-SU-2024:2973-1","SUSE-SU-2025:20008-1","SUSE-SU-2025:20028-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/36xxx/CVE-2024-36901.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/2272e2db38f2e85929278146d7c770f22f528579"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4db783d68b9b39a411a96096c10828ff5dfada7a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/55f7eb4001ef2a3b48cf039cf263f9ed0ec5a488"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9df3b2474a627994433a87cbf325a562555b17de"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e31b25cc2066d3f2b6c38579253882008d4469b0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ea0cb87402f774b0e1214ffba0f57028b27cf155"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/36xxx/CVE-2024-36901.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-36901"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"778d80be52699596bf70e0eb0761cf5e1e46088d"},{"fixed":"9df3b2474a627994433a87cbf325a562555b17de"},{"fixed":"2272e2db38f2e85929278146d7c770f22f528579"},{"fixed":"ea0cb87402f774b0e1214ffba0f57028b27cf155"},{"fixed":"e31b25cc2066d3f2b6c38579253882008d4469b0"},{"fixed":"55f7eb4001ef2a3b48cf039cf263f9ed0ec5a488"},{"fixed":"4db783d68b9b39a411a96096c10828ff5dfada7a"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-36901.json"}}],"schema_version":"1.7.5"}