Access of Resource Using Incompatible Type ('Type Confusion') Affecting bpftool package, versions <0:6.1.19-30.43.amzn2023


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-AMZN2023-BPFTOOL-3369202
  • published23 Mar 2023
  • disclosed27 Mar 2023

Introduced: 23 Mar 2023

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

How to fix?

Upgrade Amazon-Linux:2023 bpftool to version 0:6.1.19-30.43.amzn2023 or higher.
This issue was patched in ALAS2023-2023-138.

NVD Description

Note: Versions mentioned in the description apply only to the upstream bpftool package and not the bpftool package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 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