cbcvebase.
CVE-2024-36902
published 2024-05-30

CVE-2024-36902: In the Linux kernel, the following vulnerability has been resolved: ipv6: fib6_rules: avoid possible NULL dereference in fib6_rule_action() syzbot is able to…

PriorityP422medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.29%
20.9th percentile
In the Linux kernel, the following vulnerability has been resolved: ipv6: fib6_rules: avoid possible NULL dereference in fib6_rule_action() syzbot is able to trigger the following crash [1], caused by unsafe ip6_dst_idev() use. Indeed ip6_dst_idev() can return NULL, and must always be checked. [1] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 0 PID: 31648 Comm: syz-executor.0 Not tainted 6.9.0-rc4-next-20240417-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:__fib6_rule_action net/ipv6/fib6_rules.c:237 [inline] RIP: 0010:fib6_rule_action+0x241/0x7b0 net/ipv6/fib6_rules.c:267 Code: 02 00 00 49 8d 9f d8 00 00 00 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 f9 32 bf f7 48 8b 1b 48 89 d8 48 c1 e8 03 80 3c 20 00 74 08 48 89 df e8 e0 32 bf f7 4c 8b 03 48 89 ef 4c RSP: 0018:ffffc9000fc1f2f0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 1a772f98c8186700 RDX: 0000000000000003 RSI: ffffffff8bcac4e0 RDI: ffffffff8c1f9760 RBP: ffff8880673fb980 R08: ffffffff8fac15ef R09: 1ffffffff1f582bd R10: dffffc0000000000 R11: fffffbfff1f582be R12: dffffc0000000000 R13: 0000000000000080 R14: ffff888076509000 R15: ffff88807a029a00 FS: 00007f55e82ca6c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b31d23000 CR3: 0000000022b66000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: fib_rules_lookup+0x62c/0xdb0 net/core/fib_rules.c:317 fib6_rule_lookup+0x1fd/0x790 net/ipv6/fib6_rules.c:108 ip6_route_output_flags_noref net/ipv6/route.c:2637 [inline] ip6_route_output_flags+0x38e/0x610 net/ipv6/route.c:2649 ip6_route_output include/net/ip6_route.h:93 [inline] ip6_dst_lookup_

Affected

28 ranges· showing 25
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.94-1 (bookworm)linux 6.1.94-1 (bookworm)
linuxlinux
linuxlinux>= 5e5f3f0f801321078c897a5de0b4b4304f234da0 < 4a5a573387da6a6b23a4cc62147453ff1bc32afa4a5a573387da6a6b23a4cc62147453ff1bc32afa
linuxlinux>= 5e5f3f0f801321078c897a5de0b4b4304f234da0 < ddec23f206a944c73bcc2724358b85388837daffddec23f206a944c73bcc2724358b85388837daff
linuxlinux>= 5e5f3f0f801321078c897a5de0b4b4304f234da0 < 674c951ab8a23f7aff9b4c3f2f865901bc76a290674c951ab8a23f7aff9b4c3f2f865901bc76a290
linuxlinux>= 5e5f3f0f801321078c897a5de0b4b4304f234da0 < 35297fc68de36826087e976f86a5b1f94fd0bf9535297fc68de36826087e976f86a5b1f94fd0bf95
linuxlinux>= 5e5f3f0f801321078c897a5de0b4b4304f234da0 < 7e3242c139c38e60844638e394c2877b16b396b07e3242c139c38e60844638e394c2877b16b396b0
linuxlinux>= 5e5f3f0f801321078c897a5de0b4b4304f234da0 < 8745a8d74ba17dafe72b6ab461fa6c007d8797478745a8d74ba17dafe72b6ab461fa6c007d879747
linuxlinux>= 5e5f3f0f801321078c897a5de0b4b4304f234da0 < 1876881c9a49613b5249fb400cbf53412d90cb091876881c9a49613b5249fb400cbf53412d90cb09
linuxlinux>= 5e5f3f0f801321078c897a5de0b4b4304f234da0 < d101291b2681e5ab938554e3e323f7a7ee33e3aad101291b2681e5ab938554e3e323f7a7ee33e3aa
linuxlinux_kernel>= 0 < 5.10.218-15.10.218-1
linuxlinux_kernel>= 0 < 6.1.94-16.1.94-1
linuxlinux_kernel>= 0 < 6.8.11-16.8.11-1
linuxlinux_kernel>= 0 < 6.8.11-16.8.11-1
linuxlinux_kernel>= 0 < 5.4.0-192.2125.4.0-192.212
linuxlinux_kernel>= 0 < 5.15.0-118.1285.15.0-118.128
linuxlinux_kernel>= 0 < 6.8.0-40.406.8.0-40.40
linuxlinux_kernel>= 0 < 4.4.0-257.2914.4.0-257.291
linuxlinux_kernel>= 2.6.26 < 4.19.3144.19.314
linuxlinux_kernel>= 4.20 < 5.4.2765.4.276
linuxlinux_kernel>= 5.15 < 6.1.916.1.91
linuxlinux_kernel>= 5.5 < 5.10.2175.10.217
linuxlinux_kernel>= 6.2 < 6.6.316.6.31
linuxlinux_kernel>= 6.7 < 6.8.106.8.10
msrcazl3_kernel_6.6.29.1-5_on_azure_linux_3.0

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv7.8HIGH
vendor_ubuntu7.8HIGH
vendor_debian5.5MEDIUM
vendor_msrc5.5MEDIUM
vendor_redhat5.5MEDIUM
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