vulnerability
Debian: CVE-2021-31440: linux -- security update
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:L/AC:M/Au:N/C:C/I:C/A:C) | May 21, 2021 | Jul 30, 2024 | Aug 15, 2025 |
Severity
7
CVSS
(AV:L/AC:M/Au:N/C:C/I:C/A:C)
Published
May 21, 2021
Added
Jul 30, 2024
Modified
Aug 15, 2025
Description
This vulnerability allows local attackers to escalate privileges on affected installations of Linux Kernel 5.11.15. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the handling of eBPF programs. The issue results from the lack of proper validation of user-supplied eBPF programs prior to executing them. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the kernel. Was ZDI-CAN-13661.
Solution
debian-upgrade-linux
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