{"cve":"CVE-2024-36008","nvd":{"published":"2024-05-20T10:15:14.703","modified":"2026-10-15T01:18:21.447","status":"Modified","description":"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","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-476"],"references":["https://git.kernel.org/stable/c/03b5a9b2b526862b21bcc31976e393a6e63785d1","https://git.kernel.org/stable/c/58a4c9b1e5a3e53c9148e80b90e1e43897ce77d1","https://git.kernel.org/stable/c/7a25bfd12733a8f38f8ca47c581f876c3d481ac0","https://git.kernel.org/stable/c/7da0f91681c4902bc5c210356fdd963b04d5d1d4","https://git.kernel.org/stable/c/8240c7308c941db4d9a0a91b54eca843c616a655"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:50:30.954589733+00:00"},"epss":{"cve":"CVE-2024-36008","score":0.00214,"percentile":0.1169,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}