Out-of-bounds Read Affecting bpftool package, versions <0:4.18.0-553.el8_10


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.07% (31st percentile)

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  • Snyk IDSNYK-RHEL8-BPFTOOL-5918978
  • published26 Sept 2023
  • disclosed25 Sept 2023

Introduced: 25 Sep 2023

CVE-2023-42755  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade RHEL:8 bpftool to version 0:4.18.0-553.el8_10 or higher.
This issue was patched in RHSA-2024:3138.

NVD Description

Note: Versions mentioned in the description apply only to the upstream bpftool package and not the bpftool package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

A flaw was found in the IPv4 Resource Reservation Protocol (RSVP) classifier in the Linux kernel. The xprt pointer may go beyond the linear part of the skb, leading to an out-of-bounds read in the rsvp_classify function. This issue may allow a local user to crash the system and cause a denial of service.

CVSS Scores

version 3.1