ipv6: prevent possible NULL deref in fib6_nh_init()
syzbot reminds us that in6_dev_get() can return NULL.
fib6_nh_init()
ip6_validate_gw( &idev )
ip6_route_check_nh( idev )
*idev = in6_dev_get(dev); // can be NULL
Oops: general protection fault, probably for non-canonical address 0xdffffc00000000bc: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x00000000000005e0-0x00000000000005e7]
CPU: 0 PID: 11237 Comm: syz-executor.3 Not tainted 6.10.0-rc2-syzkaller-00249-gbe27b8965297 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:fib6_nh_init+0x640/0x2160 net/ipv6/route.c:3606
Code: 00 00 fc ff df 4c 8b 64 24 58 48 8b 44 24 28 4c 8b 74 24 30 48 89 c1 48 89 44 24 28 48 8d 98 e0 05 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 b3 17 00 00 8b 1b 31 ff 89 de e8 b8 8b
RSP: 0018:ffffc900032775a0 EFLAGS: 00010202
RAX: 00000000000000bc RBX: 00000000000005e0 RCX: 0000000000000000
RDX: 0000000000000010 RSI: ffffc90003277a54 RDI: ffff88802b3a08d8
RBP: ffffc900032778b0 R08: 00000000000002fc R09: 0000000000000000
R10: 00000000000002fc R11: 0000000000000000 R12: ffff88802b3a08b8
R13: 1ffff9200064eec8 R14: ffffc90003277a00 R15: dffffc0000000000
FS: 00007f940feb06c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000000245e8000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
ip6_route_info_create+0x99e/0x12b0 net/ipv6/route.c:3809
ip6_route_add+0x28/0x160 net/ipv6/route.c:3853
ipv6_route_ioctl+0x588/0x870 net/ipv6/route.c:4483
inet6_ioctl+0x21a/0x280 net/ipv6/af_inet6.c:579
sock_do_ioctl+0x158/0x460 net/socket.c:1222
sock_ioctl+0x629/0x8e0 net/socket.c:1341
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:907 [inline]
__se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f940f07cea9
Analysis and contextual insights are available on OpenCVE Cloud.
No vendor fix or workaround currently provided.
Additional remediation guidance may be available on OpenCVE Cloud.
Tracking
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| Source | ID | Title |
|---|---|---|
Debian DLA |
DLA-4008-1 | linux-6.1 security update |
Debian DSA |
DSA-5730-1 | linux security update |
Debian DSA |
DSA-5731-1 | linux security update |
Ubuntu USN |
USN-6999-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-6999-2 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-7003-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-7003-2 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-7003-3 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-7003-4 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-7003-5 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-7004-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-7005-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-7005-2 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-7006-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-7007-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-7007-2 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-7007-3 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-7008-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-7009-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-7009-2 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-7019-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-7029-1 | Linux kernel vulnerabilities |
Tue, 12 May 2026 12:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
Mon, 03 Nov 2025 22:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
Wed, 06 Nov 2024 02:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:/a:redhat:enterprise_linux:8::nfv cpe:/o:redhat:enterprise_linux:8 |
Wed, 11 Sep 2024 13:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Wed, 21 Aug 2024 17:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Linux
Linux linux Kernel |
|
| CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.10:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.10:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.10:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.10:rc4:*:*:*:*:*:* |
|
| Vendors & Products |
Linux
Linux linux Kernel |
Fri, 16 Aug 2024 18:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Redhat
Redhat enterprise Linux |
|
| CPEs | cpe:/a:redhat:enterprise_linux:9 cpe:/o:redhat:enterprise_linux:9 |
|
| Vendors & Products |
Redhat
Redhat enterprise Linux |
Status: PUBLISHED
Assigner: Linux
Published:
Updated: 2026-05-12T11:55:59.038Z
Reserved: 2024-07-12T12:17:45.594Z
Link: CVE-2024-40961
Updated: 2025-11-03T21:58:27.367Z
Status : Modified
Published: 2024-07-12T13:15:18.110
Modified: 2026-05-12T12:17:01.027
Link: CVE-2024-40961
OpenCVE Enrichment
No data.
Debian DLA
Debian DSA
Ubuntu USN