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CVE-2021-3905

Published: 8 November 2021

A memory leak was found in Open vSwitch (OVS) during userspace IP fragmentation processing. An attacker could use this flaw to potentially exhaust available memory by keeping sending packet fragments.

Notes

AuthorNote
mdeslaur
introduced by https://github.com/openvswitch/ovs/commit/640d4db788eda96bb904abcfc7de2327107bafe1

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
openvswitch
Launchpad, Ubuntu, Debian
focal Not vulnerable
(2.13.3-0ubuntu0.20.04.2)
hirsute Not vulnerable
(2.15.0-0ubuntu3.1)
impish
Released (2.16.0-0ubuntu2.1)
trusty Ignored
(end of standard support)
xenial Not vulnerable
(code not present)
bionic Not vulnerable
(2.9.8-0ubuntu0.18.04.2)
upstream Needs triage

jammy Not vulnerable
(2.17.0~git20220105.0d1ffb7-0ubuntu1)
Patches:
upstream: https://github.com/openvswitch/ovs/commit/803ed12e31b0377c37d7aa8c94b3b92f2081e349

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H