vulnerability
Amazon Linux AMI: CVE-2021-4159: Security patch for kernel (ALAS-2022-1636)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 4 | (AV:L/AC:L/Au:M/C:C/I:N/A:N) | Feb 10, 2022 | Oct 11, 2022 | May 21, 2025 |
Severity
4
CVSS
(AV:L/AC:L/Au:M/C:C/I:N/A:N)
Published
Feb 10, 2022
Added
Oct 11, 2022
Modified
May 21, 2025
Description
A vulnerability was found in the Linux kernel's EBPF verifier when handling internal data structures. Internal memory locations could be returned to userspace. A local attacker with the permissions to insert eBPF code to the kernel can use this to leak internal kernel memory details defeating some of the exploit mitigations in place for the kernel.
Solution
amazon-linux-upgrade-kernel
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