VDB

CVE-2026-31911

CVE-2026-31911 PUBLISHED CVSS 5.5 MEDIUM

Reported by Tcpdump · Published September 5, 2026

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.

Risk Scores

CVSS 3.1
5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected Products

VendorProductVersions
The Tcpdump Grouplibpcap0
alpinelibpcap0, 0, 0
The Tcpdump Grouplibpcap
The Tcpdump Grouplibpcap0, 0

Timeline

  • Sep 5, 2026 Coalition ESS Score
  • Sep 5, 2026 CVE Published
  • Sep 6, 2026 EPSS Score
  • Sep 8, 2026 CVE Updated

References

  • patch
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