Out-of-bounds Write Affecting bpftool package, versions <0:4.18.0-193.113.1.el8_2


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.07% (34th percentile)

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  • Snyk IDSNYK-RHEL8-BPFTOOL-5874144
  • published23 Jun 2023
  • disclosed29 May 2023

Introduced: 29 May 2023

CVE-2023-35788  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade RHEL:8 bpftool to version 0:4.18.0-193.113.1.el8_2 or higher.
This issue was patched in RHSA-2023:4815.

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.

An issue was discovered in fl_set_geneve_opt in net/sched/cls_flower.c in the Linux kernel before 6.3.7. It allows an out-of-bounds write in the flower classifier code via TCA_FLOWER_KEY_ENC_OPTS_GENEVE packets. This may result in denial of service or privilege escalation.

CVSS Scores

version 3.1