Out-of-bounds Read Affecting libpcap package, versions <14:1.10.7-1.amzn2023.0.1


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.11% (2nd percentile)

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  • Snyk IDSNYK-AMZN2023-LIBPCAP-20245521
  • published29 Sept 2026
  • disclosed5 Sept 2026

Introduced: 5 Sep 2026

CVE-2026-0799  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 libpcap to version 14:1.10.7-1.amzn2023.0.1 or higher.
This issue was patched in ALAS2023-2026-3100.

NVD Description

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

In BPF instructions that load/store a value from/to a scratch memory register the register index is an unsigned 32-bit integer and must not exceed 15, but libpcap BPF interpreter does not validate the value. In particular uncommon use cases a crafted filter program can cause the interpreter to try reading and writing the OS process memory in the 16GiB starting at the current stack frame on 64-bit architectures and in the entire address space on 32-bit architectures.

CVSS Base Scores

version 3.1