Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: can: af_can: fix NULL pointer dereference in can_rx_register() It causes NULL pointer dereference when testing as following: (a) use syscall(__NR_socket, 0x10ul, 3ul, 0) to create netlink socket. (b) use syscall(__NR_sendmsg, ...) to create bond link device and vxcan link device, and bind vxcan device to bond device (can also use ifenslave command to bind vxcan device to bond device). (c) use syscall(__NR_socket, 0x1dul, 3ul, 1) to create CAN socket. (d) use syscall(__NR_bind, ...) to bind the bond device to CAN socket. The bond device invokes the can-raw protocol registration interface to receive CAN packets. However, ml_priv is not allocated to the dev, dev_rcv_lists is assigned to NULL in can_rx_register(). In this case, it will occur the NULL pointer dereference issue. The following is the stack information: BUG: kernel NULL pointer dereference, address: 0000000000000008 PGD 122a4067 P4D 122a4067 PUD 1223c067 PMD 0 Oops: 0000 [#1] PREEMPT SMP RIP: 0010:can_rx_register+0x12d/0x1e0 Call Trace: <TASK> raw_enable_filters+0x8d/0x120 raw_enable_allfilters+0x3b/0x130 raw_bind+0x118/0x4f0 __sys_bind+0x163/0x1a0 __x64_sys_bind+0x1e/0x30 do_syscall_64+0x35/0x80 entry_SYSCALL_64_after_hwframe+0x63/0xcd </TASK>
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 4ac1feff6ea6495cbfd336f4438a6c6d140544a6 before afab4655750fcb3fca359bc7d7214e3d634cdf9c; affected 1a5751d58b14195f763b8c1d9ef33fb8a93e95e7 before d68fa77ee3d03bad6fe84e89759ddf7005f9e9c6; affected 4e096a18867a5a989b510f6999d9c6b6622e8f7b before 261178a1c2623077d62e374a75c195e6c99a6f05; affected 4e096a18867a5a989b510f6999d9c6b6622e8f7b before a8055677b054bc2bb78beb1080fdc2dc5158c2fe; affected 4e096a18867a5a989b510f6999d9c6b6622e8f7b before 8aa59e355949442c408408c2d836e561794c40a1; affected 96340078d50a54f6a1252c62596bc44321c8bff9; affected 5.4.110 before 5.4.225; affected 5.10.28 before 5.10.155; affected 5.11.12 before 5.12 |
| Linux / Linux | affected 5.12; unaffected 0 before 5.12; unaffected 5.4.225 through 5.4.*; unaffected 5.10.155 through 5.10.*; unaffected 5.15.79 through 5.15.*; unaffected 6.0.9 through 6.0.*; unaffected 6.1 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/afab4655750fcb3fca359bc7d7214e3d634cdf9c
- https://git.kernel.org/stable/c/d68fa77ee3d03bad6fe84e89759ddf7005f9e9c6
- https://git.kernel.org/stable/c/261178a1c2623077d62e374a75c195e6c99a6f05
- https://git.kernel.org/stable/c/a8055677b054bc2bb78beb1080fdc2dc5158c2fe
- https://git.kernel.org/stable/c/8aa59e355949442c408408c2d836e561794c40a1
ADP enrichment
No English description supplied.
No references supplied.