PT-2021-8173 · Linux+3 · Linux Kernel+3
Nicholas Nunley
·
Published
2021-11-15
·
Updated
2024-10-25
·
CVE-2021-47201
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 resource management error in the iavf disable vf function of the Linux kernel's iavf component. This error can cause a panic when the interface is disabled and then later brought up again after PF communication is restored. The problem arises because iavf free queues clears adapter->num active queues, which iavf free q vectors relies on. To resolve this, the order of the function calls in iavf disable vf needs to be swapped. An attacker could potentially exploit this issue 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
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Weakness Enumeration
Related Identifiers
Affected Products
Astra Linux
Linux Kernel
Red Os
Suse