PT-2025-18580 · Linux+2 · Linux Kernel+2
Published
2022-10-28
·
Updated
2025-07-10
·
CVE-2022-49863
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The issue is caused by a NULL pointer dereference in the
can rx register() function when testing the following scenario:
(a) creating a netlink socket using syscall( NR socket, 0x10ul, 3ul, 0),
(b) creating a bond link device and vxcan link device, and binding the vxcan device to the bond device using syscall( NR sendmsg, ...),
(c) creating a CAN socket using syscall( NR socket, 0x1dul, 3ul, 1), and
(d) binding the bond device to the CAN socket using syscall( NR bind, ...).
The bond device invokes the can-raw protocol registration interface to receive CAN packets, but ml priv is not allocated to the dev, and dev rcv lists is assigned to NULL in can rx register(), resulting in a NULL pointer dereference issue.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
NULL Pointer Dereference
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Weakness Enumeration
Related Identifiers
Affected Products
Astra Linux
Linux Kernel
Suse