One of the data structures that holds TCP segments in all versions of FreeBSD prior to 11.2-RELEASE-p1, 11.1-RELEASE-p12, and 10.4-RELEASE-p10 uses an inefficient algorithm to reassemble the data. This causes the CPU time spent on segment processing to grow linearly with the number of segments in the reassembly queue. An attacker who has the ability to send TCP traffic to a victim system can degrade the victim system's network performance and/or consume excessive CPU by exploiting the inefficiency of TCP reassembly handling, with relatively small bandwidth cost.
Metrics
Affected Vendors & Products
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: freebsd
Published: 2018-08-09T18:00:00Z
Updated: 2024-09-16T17:53:10.816Z
Reserved: 2018-02-12T00:00:00
Link: CVE-2018-6922
Vulnrichment
No data.
NVD
Status : Modified
Published: 2018-08-09T18:29:00.277
Modified: 2019-10-09T23:42:06.470
Link: CVE-2018-6922
Redhat
No data.