vulnerability

Ubuntu: USN-6976-1 (CVE-2021-47521): Linux kernel vulnerabilities

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Severity
7
CVSS
(AV:L/AC:L/Au:S/C:C/I:C/A:C)
Published
May 24, 2024
Added
Nov 19, 2024
Modified
Aug 18, 2025

Description

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.

Solutions

ubuntu-upgrade-linux-image-4-4-0-1135-awsubuntu-upgrade-linux-image-4-4-0-1136-kvmubuntu-upgrade-linux-image-4-4-0-1173-awsubuntu-upgrade-linux-image-4-4-0-258-genericubuntu-upgrade-linux-image-4-4-0-258-lowlatencyubuntu-upgrade-linux-image-awsubuntu-upgrade-linux-image-genericubuntu-upgrade-linux-image-generic-lts-xenialubuntu-upgrade-linux-image-kvmubuntu-upgrade-linux-image-lowlatencyubuntu-upgrade-linux-image-lowlatency-lts-xenialubuntu-upgrade-linux-image-virtualubuntu-upgrade-linux-image-virtual-lts-xenial

References

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