Division by Zero Vulnerability in libpcap BPF Interpreter
CVE-2026-6244

5.5MEDIUM

Key Information:

Vendor

The Tcpdump Group

Status
Libpcap
Vendor
CVE Published:
5 September 2026

Badges

👾 Exploit Exists

What is CVE-2026-6244?

The libpcap BPF interpreter contains a vulnerability that arises from improper handling of division and modulus operations with an immediate value of zero. This flaw can be exploited through specially crafted filter programs, leading to potential disruptions in network packet processing and compromising system stability. Users are encouraged to upgrade to the latest version to mitigate this security risk.

Affected Version(s)

libpcap 0 < 1.10.7

References

https://github.com/the-tcpdump-group/libpcap/commit/98bb9...
patch

CVSS V3.1

Score:
5.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Denis Ovsienko
.