CVE - CVE-2022-49863

CVE-ID
CVE-2022-49863	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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>
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/261178a1c2623077d62e374a75c195e6c99a6f05 URL:https://git.kernel.org/stable/c/261178a1c2623077d62e374a75c195e6c99a6f05 MISC:https://git.kernel.org/stable/c/8aa59e355949442c408408c2d836e561794c40a1 URL:https://git.kernel.org/stable/c/8aa59e355949442c408408c2d836e561794c40a1 MISC:https://git.kernel.org/stable/c/a8055677b054bc2bb78beb1080fdc2dc5158c2fe URL:https://git.kernel.org/stable/c/a8055677b054bc2bb78beb1080fdc2dc5158c2fe MISC:https://git.kernel.org/stable/c/afab4655750fcb3fca359bc7d7214e3d634cdf9c URL:https://git.kernel.org/stable/c/afab4655750fcb3fca359bc7d7214e3d634cdf9c MISC:https://git.kernel.org/stable/c/d68fa77ee3d03bad6fe84e89759ddf7005f9e9c6 URL:https://git.kernel.org/stable/c/d68fa77ee3d03bad6fe84e89759ddf7005f9e9c6
Assigning CNA
kernel.org
Date Record Created
20250501	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20250501)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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