CVE-2026-31911
Medium
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.
SeverityMedium
CVSS5.5
Exploit probability—
ProductThe Tcpdump Group Libpcap
PublishedSep 5, 2026
First seenSep 5, 2026
Weakness typeCWE-617CWE-617
How to fix
Update
- The Tcpdump Group libpcap1.10.7 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| The Tcpdump Group libpcap | v < 1.10.7 | 1.10.7 |
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