Access of Resource Using Incompatible Type ('Type Confusion') Affecting kernel package, versions <0:4.14.344-262.563.amzn2


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.04% (5th percentile)

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  • Snyk IDSNYK-AMZN2-KERNEL-7447660
  • published13 Jul 2024
  • disclosed27 Mar 2023

Introduced: 27 Mar 2023

CVE-2023-1077  (opens in a new tab)
CWE-843  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 kernel to version 0:4.14.344-262.563.amzn2 or higher.
This issue was patched in ALAS2-2024-2588.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel package and not the kernel package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

In the Linux kernel, pick_next_rt_entity() may return a type confused entry, not detected by the BUG_ON condition, as the confused entry will not be NULL, but list_head.The buggy error condition would lead to a type confused entry with the list head,which would then be used as a type confused sched_rt_entity,causing memory corruption.

CVSS Scores

version 3.1