CVE-2022-49844

HighCVSS 7.1/10Last modified Jun 17, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

can: dev: fix skb drop check

In commit a6d190f8c767 ("can: skb: drop tx skb if in listen only mode") the priv->ctrlmode element is read even on virtual CAN interfaces that do not create the struct can_priv at startup. This out-of-bounds read may lead to CAN frame drops for virtual CAN interfaces like vcan and vxcan.

This patch mainly reverts the original commit and adds a new helper for CAN interface drivers that provide the required information in struct can_priv.

[mkl: patch pch_can, too]

Metrics

CVSS 3.1 7.1/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Weakness enumeration

CWE-125

Affected software

No affected versions have been published.

Timeline

Published
May 1, 2025
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2022-49844: High severity, CVSS 7.1 | Vulnix