PT-2024-11254 · Linux+3 · Linux Kernel+3
Published
2021-06-09
·
Updated
2025-05-25
·
CVE-2021-47247
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 versions prior to 5.13.0-rc3+
Description
The vulnerability is a use-after-free issue in the
mlx5e encap take function, which can be triggered by concurrent encap entry insertion/deletion. This can lead to a use-after-free error, potentially causing a denial-of-service or allowing an attacker to execute arbitrary code.Recommendations
To resolve this issue, update the Linux kernel to a version newer than 5.13.0-rc3+. As a temporary workaround, consider disabling the
mlx5e rep neigh update function until a patch is available. However, this may have performance implications and should be carefully evaluated before implementation.Note: The provided input descriptions do not contain information about the fixed version or specific mitigation measures. The recommendation to update the Linux kernel is based on the assumption that the issue has been fixed in a later version. If no information is provided about a newer version that contains a fix for this vulnerability, the recommendation would be:
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Use After Free
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Weakness Enumeration
Related Identifiers
Affected Products
Astra Linux
Debian
Linux Kernel
Suse