Bug 2531668 (CVE-2026-45762) - CVE-2026-45762 suricata: Suricata: Remote denial of service via crafted fragmented IP traffic
Summary: CVE-2026-45762 suricata: Suricata: Remote denial of service via crafted fragm...
Keywords:
Status: NEW
Alias: CVE-2026-45762
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-10 21:22 UTC by OSIDB Bzimport
Modified: 2026-09-11 14:49 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2026-09-10 21:22:36 UTC
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to versions 7.0.16 and 8.0.5, Suricata's IP defragmentation tracker lookup did not verify that an existing tracker used the same IP address family as the packet being processed. Under crafted fragmented IPv4/IPv6 traffic, an IPv6 fragment could be associated with an IPv4 defragmentation tracker. This can lead to a remote packet-triggered crash and denial of service when Suricata performs the relevant defragmentation. Versions 7.0.16 and 8.0.5 contain a fix. As a workaround, if using Suricata as an IDS with AF_PACKET, enabling AF_PACKET's `defrag` option may prevent Suricata from seeing such fragmented packets.


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