{ "schema_version": "1.6.1", "id": "RPI-CVE-2024-36008", "modified": "2026-10-07T17:22:01Z", "upstream": [ "CVE-2024-36008" ], "published": "2024-05-20T09:48:48Z", "summary": "ipv4: check for NULL idev in ip_route_use_hint()", "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv4: check for NULL idev in ip_route_use_hint()\n\nsyzbot was able to trigger a NULL deref in fib_validate_source()\nin an old tree [1].\n\nIt appears the bug exists in latest trees.\n\nAll calls to __in_dev_get_rcu() must be checked for a NULL result.\n\n[1]\ngeneral protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN\nKASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]\nCPU: 2 PID: 3257 Comm: syz-executor.3 Not tainted 5.10.0-syzkaller #0\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014\n RIP: 0010:fib_validate_source+0xbf/0x15a0 net/ipv4/fib_frontend.c:425\nCode: 18 f2 f2 f2 f2 42 c7 44 20 23 f3 f3 f3 f3 48 89 44 24 78 42 c6 44 20 27 f3 e8 5d 88 48 fc 4c 89 e8 48 c1 e8 03 48 89 44 24 18 <42> 80 3c 20 00 74 08 4c 89 ef e8 d2 15 98 fc 48 89 5c 24 10 41 bf\nRSP: 0018:ffffc900015fee40 EFLAGS: 00010246\nRAX: 0000000000000000 RBX: ffff88800f7a4000 RCX: ffff88800f4f90c0\nRDX: 0000000000000000 RSI: 0000000004001eac RDI: ffff8880160c64c0\nRBP: ffffc900015ff060 R08: 0000000000000000 R09: ffff88800f7a4000\nR10: 0000000000000002 R11: ffff88800f4f90c0 R12: dffffc0000000000\nR13: 0000000000000000 R14: 0000000000000000 R15: ffff88800f7a4000\nFS: 00007f938acfe6c0(0000) GS:ffff888058c00000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007f938acddd58 CR3: 000000001248e000 CR4: 0000000000352ef0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n ip_route_use_hint+0x410/0x9b0 net/ipv4/route.c:2231\n ip_rcv_finish_core+0x2c4/0x1a30 net/ipv4/ip_input.c:327\n ip_list_rcv_finish net/ipv4/ip_input.c:612 [inline]\n ip_sublist_rcv+0x3ed/0xe50 net/ipv4/ip_input.c:638\n ip_list_rcv+0x422/0x470 net/ipv4/ip_input.c:673\n __netif_receive_skb_list_ptype net/core/dev.c:5572 [inline]\n __netif_receive_skb_list_core+0x6b1/0x890 net/core/dev.c:5620\n __netif_receive_skb_list net/core/dev.c:5672 [inline]\n netif_receive_skb_list_internal+0x9f9/0xdc0 net/core/dev.c:5764\n netif_receive_skb_list+0x55/0x3e0 net/core/dev.c:5816\n xdp_recv_frames net/bpf/test_run.c:257 [inline]\n xdp_test_run_batch net/bpf/test_run.c:335 [inline]\n bpf_test_run_xdp_live+0x1818/0x1d00 net/bpf/test_run.c:363\n bpf_prog_test_run_xdp+0x81f/0x1170 net/bpf/test_run.c:1376\n bpf_prog_test_run+0x349/0x3c0 kernel/bpf/syscall.c:3736\n __sys_bpf+0x45c/0x710 kernel/bpf/syscall.c:5115\n __do_sys_bpf kernel/bpf/syscall.c:5201 [inline]\n __se_sys_bpf kernel/bpf/syscall.c:5199 [inline]\n __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5199", "affected": [ { "package": { 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"https://git.kernel.org/stable/c/7da0f91681c4902bc5c210356fdd963b04d5d1d4" }, { "type": "FIX", "url": "https://git.kernel.org/stable/c/03b5a9b2b526862b21bcc31976e393a6e63785d1" }, { "type": "FIX", "url": "https://git.kernel.org/stable/c/7a25bfd12733a8f38f8ca47c581f876c3d481ac0" }, { "type": "FIX", "url": "https://git.kernel.org/stable/c/8240c7308c941db4d9a0a91b54eca843c616a655" }, { "type": "FIX", "url": "https://git.kernel.org/stable/c/c71ea3534ec0936fc57e6fb271c7cc6a2f68c295" }, { "type": "FIX", "url": "https://git.kernel.org/stable/c/58a4c9b1e5a3e53c9148e80b90e1e43897ce77d1" } ], "database_specific": { "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git", "upstream_modified": "2026-05-12T04:54:46Z" } }