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CVE-2021-47521

Updated on 24 May 2024

Severity

7.8 High severity

Details

CVSS score
7.8
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE ID
Links
NISTCIRCLRHELUbuntu

Overview

About vulnerability

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

can: sja1000: fix use after free in ems_pcmcia_add_card()

If the last channel is not available then “dev” is freed. Fortunately, we can just use “pdev->irq” instead.

Also we should check if at least one channel was set up.

Details

Affected product:
Ubuntu 16.04 ELS
Affected packages:
linux-hwe @ 4.15.0 (+1 more)

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

can: sja1000: fix use after free in ems_pcmcia_add_card()

If the last channel is not available then “dev” is freed. Fortunately, we can just use “pdev->irq” instead.

Also we should check if at least one channel was set up.

Fixes