PT-2026-136964

CVE-2026-121944

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Published

2026-11-04

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Updated

2026-11-04

Description by

CVSS 3.1
5.5
Medium
MetricsAV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
sngrep through 1.9.0 contains an infinite loop vulnerability in capture packet reasm ip() in src/capture.c that allows attackers to cause denial of service via crafted NFLOG TLVs. Attackers can supply a pcap file with link type NFLOG containing a non-payload TLV with length under 4, making the capture thread spin at full CPU and stop processing packets.
Exploitability
Fix
Impacts
Researchers
Vendors
Affected products
Weakness enumeration
CWE-835: Loop with Unreachable Exit Condition (\'Infinite Loop\')
Related identifiers
CVE-2026-121944
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