cbcvebase.
CVE-2024-36008
published 2024-05-20

CVE-2024-36008: In the Linux kernel, the following vulnerability has been resolved: ipv4: check for NULL idev in ip_route_use_hint() syzbot was able to trigger a NULL deref in…

PriorityP420medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.21%
11.9th percentile
In the Linux kernel, the following vulnerability has been resolved: ipv4: check for NULL idev in ip_route_use_hint() syzbot was able to trigger a NULL deref in fib_validate_source() in an old tree [1]. It appears the bug exists in latest trees. All calls to __in_dev_get_rcu() must be checked for a NULL result. [1] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 2 PID: 3257 Comm: syz-executor.3 Not tainted 5.10.0-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:fib_validate_source+0xbf/0x15a0 net/ipv4/fib_frontend.c:425 Code: 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 80 3c 20 00 74 08 4c 89 ef e8 d2 15 98 fc 48 89 5c 24 10 41 bf RSP: 0018:ffffc900015fee40 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff88800f7a4000 RCX: ffff88800f4f90c0 RDX: 0000000000000000 RSI: 0000000004001eac RDI: ffff8880160c64c0 RBP: ffffc900015ff060 R08: 0000000000000000 R09: ffff88800f7a4000 R10: 0000000000000002 R11: ffff88800f4f90c0 R12: dffffc0000000000 R13: 0000000000000000 R14: 0000000000000000 R15: ffff88800f7a4000 FS: 00007f938acfe6c0(0000) GS:ffff888058c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f938acddd58 CR3: 000000001248e000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ip_route_use_hint+0x410/0x9b0 net/ipv4/route.c:2231 ip_rcv_finish_core+0x2c4/0x1a30 net/ipv4/ip_input.c:327 ip_list_rcv_finish net/ipv4/ip_input.c:612 [inline] ip_sublist_rcv+0x3ed/0xe50 net/ipv4/ip_input.c:638 ip_list_rcv+0x422/0x470 net/ipv4/ip_input.c:673 __netif_receive_skb_list_ptype net/core/dev.c:5572 [inline] __netif_receive_skb_list_core+0x6b1/0x890 net

Affected

27 ranges· showing 25
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.90-1 (bookworm)linux 6.1.90-1 (bookworm)
linuxlinux
linuxlinux>= 02b24941619fcce3d280311ac73b1e461552e9c8 < 7da0f91681c4902bc5c210356fdd963b04d5d1d47da0f91681c4902bc5c210356fdd963b04d5d1d4
linuxlinux>= 02b24941619fcce3d280311ac73b1e461552e9c8 < 03b5a9b2b526862b21bcc31976e393a6e63785d103b5a9b2b526862b21bcc31976e393a6e63785d1
linuxlinux>= 02b24941619fcce3d280311ac73b1e461552e9c8 < 7a25bfd12733a8f38f8ca47c581f876c3d481ac07a25bfd12733a8f38f8ca47c581f876c3d481ac0
linuxlinux>= 02b24941619fcce3d280311ac73b1e461552e9c8 < 8240c7308c941db4d9a0a91b54eca843c616a6558240c7308c941db4d9a0a91b54eca843c616a655
linuxlinux>= 02b24941619fcce3d280311ac73b1e461552e9c8 < c71ea3534ec0936fc57e6fb271c7cc6a2f68c295c71ea3534ec0936fc57e6fb271c7cc6a2f68c295
linuxlinux>= 02b24941619fcce3d280311ac73b1e461552e9c8 < 58a4c9b1e5a3e53c9148e80b90e1e43897ce77d158a4c9b1e5a3e53c9148e80b90e1e43897ce77d1
linuxlinux_kernel>= 0 < 5.10.216-15.10.216-1
linuxlinux_kernel>= 0 < 6.1.90-16.1.90-1
linuxlinux_kernel>= 0 < 6.8.9-16.8.9-1
linuxlinux_kernel>= 0 < 6.8.9-16.8.9-1
linuxlinux_kernel>= 0 < 5.15.0-116.1265.15.0-116.126
linuxlinux_kernel>= 0 < 6.8.0-39.396.8.0-39.39
linuxlinux_kernel>= 5.11 < 5.15.1585.15.158
linuxlinux_kernel>= 5.16 < 6.1.906.1.90
linuxlinux_kernel>= 5.5 < 5.10.2165.10.216
linuxlinux_kernel>= 6.2 < 6.6.306.6.30
linuxlinux_kernel>= 6.7 < 6.8.96.8.9
msrcazl3_hyperv-daemons_6.6.29.1-1_on_azure_linux_3.0
msrcazl3_hyperv-daemons_6.6.35.1-1_on_azure_linux_3.0
msrcazl3_kernel_6.6.29.1-5_on_azure_linux_3.0
msrcazl3_kernel_6.6.35.1-4_on_azure_linux_3.0
msrccbl2_hyperv-daemons_5.15.153.1-1_on_cbl_mariner_2.0
msrccbl2_hyperv-daemons_5.15.158.1-1_on_cbl_mariner_2.0

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv6.5MEDIUM
vendor_ubuntu6.5MEDIUM
vendor_debian5.5MEDIUM
vendor_msrc5.5MEDIUM
vendor_redhat5.5MEDIUM
Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.