CVE-2026-31911 - Vulnerability Details - OpenCVE

libpcap BPF interpreter calls abort() if it encounters a BPF instruction that has an invalid opcode. In particular uncommon use cases a crafted filter program can terminate the OS process.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Vendors	Products
Tcpdump	Libpcap

No data.

No data.

References

Link	Providers
https://github.com/the-tcpdump-group/libpcap/commit/a715bcdde830299cba4171514385cb17ec19b6e9
https://nvd.nist.gov/vuln/detail/CVE-2026-31911
https://www.cve.org/CVERecord?id=CVE-2026-31911

History

Wed, 09 Sep 2026 12:15:00 +0000

Type	Values Removed	Values Added
References		https://nvd.nist.gov/vuln/detail/CVE-2026-31911 https://www.cve.org/CVERecord?id=CVE-2026-31911
Metrics	threat_severity `None`	threat_severity `Moderate`

Tue, 08 Sep 2026 16:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Mon, 07 Sep 2026 08:45:00 +0000

Type	Values Removed	Values Added
First Time appeared		Tcpdump Tcpdump libpcap
Vendors & Products		Tcpdump Tcpdump libpcap

Sat, 05 Sep 2026 19:00:00 +0000

Type	Values Removed	Values Added
Description		libpcap BPF interpreter calls abort() if it encounters a BPF instruction that has an invalid opcode. In particular uncommon use cases a crafted filter program can terminate the OS process.
Title		abort() in libpcap before 1.10.7 on an invalid BPF opcode
Weaknesses		CWE-617
References		https://github.com/the-tcpdump-group/libpcap/commit/a715bcdde830299cba4171514385cb17ec19b6e9
Metrics		cvssV3_1 `{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}`

MITRE

Status: PUBLISHED

Assigner: Tcpdump

Published: 2026-09-05T18:50:03.936Z

Updated: 2026-09-08T15:13:10.881Z

Reserved: 2026-03-10T09:30:50.972Z

Link: CVE-2026-31911

Vulnrichment

Updated: 2026-09-08T15:13:07.935Z

NVD

Status : Awaiting Analysis

Published: 2026-09-05T19:16:55.707

Modified: 2026-09-08T19:20:25.117

Link: CVE-2026-31911

Redhat

Severity : Moderate

Publid Date: 2026-09-05T18:50:03Z

Links: CVE-2026-31911 - Bugzilla

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