PT-2024-11842 · Linux+4 · Linux Kernel+4
Wei Chen
·
Published
2022-12-07
·
Updated
2025-09-29
·
CVE-2022-48977
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 related to a NULL pointer dereference in the
can rcv filter function. This occurs due to a missing initialization of ml priv in the receive path of CAN frames. The problem arose after a commit introduced a CAN-specific pointer in the struct net device, making the check for dev->type to be ARPHRD CAN insufficient. This is because bonding or tun netdevices claim to be CAN devices but do not initialize ml priv accordingly. The vulnerability can be exploited to cause a denial of service.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
NULL Pointer Dereference
RCE
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Related Identifiers
Affected Products
Alt Linux
Astra Linux
Linux Kernel
Red Os
Suse