PT-2021-8046 · Linux+4 · Linux Kernel+4
Dan Carpenter
·
Published
2021-12-07
·
Updated
2024-08-21
·
CVE-2021-47521
CVSS v3.1
7.8
High
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The issue is related to a use-after-free vulnerability in the
ems pcmcia add card() function in the Linux kernel's Philips/NXP SJA1000 driver. This vulnerability can be exploited to impact the confidentiality, integrity, and availability of protected information. The vulnerability occurs when the last channel is not available, causing dev to be freed. However, pdev->irq can be used instead. It is also recommended to check if at least one channel was set up.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Use After Free
Found an issue in the description? Have something to add? Feel free to write us 👾
Weakness Enumeration
Related Identifiers
Affected Products
Astra Linux
Linux Kernel
Red Os
Suse
Ubuntu