CVE catalog

CVE-2021-3905

openvswitch: CVE-2021-3905

Severity: High · CVSS 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: Sep 29, 2021, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 2.13% · Oct 27, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	openvswitch	sid	`4.0.0-2`	not affected
Debian	openvswitch	forky	`4.0.0-2`	not affected
Debian	openvswitch	trixie	`3.5.0-1`	not affected
Debian	openvswitch	bookworm	`3.1.0-2+deb12u1`	not affected
Debian	openvswitch	bookworm-security	`3.1.0-2+deb12u1`	not affected

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	openvswitch	source	sid	`Not affected`	unimportant	Not reported	Not reported
Debian	openvswitch	source	forky	`Not affected`	unimportant	Not reported	Not reported
Debian	openvswitch	source	trixie	`Not affected`	unimportant	Not reported	Not reported
Debian	openvswitch	source	bookworm	`Not affected`	unimportant	Not reported	Not reported

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[openvswitch-common]Not affected
Source package: [openvswitch]
Details (4)
- 3.1.0-2+deb12u1 · amd64 · bookworm
  Not affected
  dsa · openvswitch · debian · bookworm
- 3.1.0-2+deb12u1 · arm64 · bookworm
  Not affected
  dsa · openvswitch · debian · bookworm
- 3.1.0-2+deb12u1 · amd64 · bookworm-security
  Not affected
  dsa · openvswitch · debian · bookworm
- 3.1.0-2+deb12u1 · arm64 · bookworm-security
  Not affected
  dsa · openvswitch · debian · bookworm
[openvswitch-doc]Not affected
Source package: [openvswitch]
Details (4)
- 3.1.0-2+deb12u1 · all · bookworm
  Not affected
  dsa · openvswitch · debian · bookworm
- 3.1.0-2+deb12u1 · all · bookworm
  Not affected
  dsa · openvswitch · debian · bookworm
- 3.1.0-2+deb12u1 · all · bookworm-security
  Not affected
  dsa · openvswitch · debian · bookworm
- 3.1.0-2+deb12u1 · all · bookworm-security
  Not affected
  dsa · openvswitch · debian · bookworm
[openvswitch-ipsec]Not affected
Source package: [openvswitch]
Details (4)
- 3.1.0-2+deb12u1 · amd64 · bookworm
  Not affected
  dsa · openvswitch · debian · bookworm
- 3.1.0-2+deb12u1 · arm64 · bookworm
  Not affected
  dsa · openvswitch · debian · bookworm
- 3.1.0-2+deb12u1 · amd64 · bookworm-security
  Not affected
  dsa · openvswitch · debian · bookworm
- 3.1.0-2+deb12u1 · arm64 · bookworm-security
  Not affected
  dsa · openvswitch · debian · bookworm
[openvswitch-pki]Not affected
Source package: [openvswitch]
Details (4)
- 3.1.0-2+deb12u1 · all · bookworm
  Not affected
  dsa · openvswitch · debian · bookworm
- 3.1.0-2+deb12u1 · all · bookworm
  Not affected
  dsa · openvswitch · debian · bookworm
- 3.1.0-2+deb12u1 · all · bookworm-security
  Not affected
  dsa · openvswitch · debian · bookworm
- 3.1.0-2+deb12u1 · all · bookworm-security
  Not affected
  dsa · openvswitch · debian · bookworm
[openvswitch-source]Not affected
Source package: [openvswitch]
Details (4)
- 3.1.0-2+deb12u1 · all · bookworm
  Not affected
  dsa · openvswitch · debian · bookworm
- 3.1.0-2+deb12u1 · all · bookworm
  Not affected
  dsa · openvswitch · debian · bookworm
- 3.1.0-2+deb12u1 · all · bookworm-security
  Not affected
  dsa · openvswitch · debian · bookworm
- 3.1.0-2+deb12u1 · all · bookworm-security
  Not affected
  dsa · openvswitch · debian · bookworm
[openvswitch-switch]Not affected
Source package: [openvswitch]
Details (4)
- 3.1.0-2+deb12u1 · amd64 · bookworm
  Not affected
  dsa · openvswitch · debian · bookworm
- 3.1.0-2+deb12u1 · arm64 · bookworm
  Not affected
  dsa · openvswitch · debian · bookworm
- 3.1.0-2+deb12u1 · amd64 · bookworm-security
  Not affected
  dsa · openvswitch · debian · bookworm
- 3.1.0-2+deb12u1 · arm64 · bookworm-security
  Not affected
  dsa · openvswitch · debian · bookworm
[openvswitch-switch-dpdk]Not affected
Source package: [openvswitch]
Details (4)
- 3.1.0-2+deb12u1 · amd64 · bookworm
  Not affected
  dsa · openvswitch · debian · bookworm
- 3.1.0-2+deb12u1 · arm64 · bookworm
  Not affected
  dsa · openvswitch · debian · bookworm
- 3.1.0-2+deb12u1 · amd64 · bookworm-security
  Not affected
  dsa · openvswitch · debian · bookworm
- 3.1.0-2+deb12u1 · arm64 · bookworm-security
  Not affected
  dsa · openvswitch · debian · bookworm
[openvswitch-test]Not affected
Source package: [openvswitch]
Details (4)
- 3.1.0-2+deb12u1 · all · bookworm
  Not affected
  dsa · openvswitch · debian · bookworm
- 3.1.0-2+deb12u1 · all · bookworm
  Not affected
  dsa · openvswitch · debian · bookworm
- 3.1.0-2+deb12u1 · all · bookworm-security
  Not affected
  dsa · openvswitch · debian · bookworm
- 3.1.0-2+deb12u1 · all · bookworm-security
  Not affected
  dsa · openvswitch · debian · bookworm
[openvswitch-testcontroller]Not affected
Source package: [openvswitch]
Details (4)
- 3.1.0-2+deb12u1 · amd64 · bookworm
  Not affected
  dsa · openvswitch · debian · bookworm
- 3.1.0-2+deb12u1 · arm64 · bookworm
  Not affected
  dsa · openvswitch · debian · bookworm
- 3.1.0-2+deb12u1 · amd64 · bookworm-security
  Not affected
  dsa · openvswitch · debian · bookworm
- 3.1.0-2+deb12u1 · arm64 · bookworm-security
  Not affected
  dsa · openvswitch · debian · bookworm
[openvswitch-vtep]Not affected
Source package: [openvswitch]
Details (4)
- 3.1.0-2+deb12u1 · amd64 · bookworm
  Not affected
  dsa · openvswitch · debian · bookworm
- 3.1.0-2+deb12u1 · arm64 · bookworm
  Not affected
  dsa · openvswitch · debian · bookworm
- 3.1.0-2+deb12u1 · amd64 · bookworm-security
  Not affected
  dsa · openvswitch · debian · bookworm
- 3.1.0-2+deb12u1 · arm64 · bookworm-security
  Not affected
  dsa · openvswitch · debian · bookworm
[python3-openvswitch]Not affected
Source package: [openvswitch]
Details (4)
- 3.1.0-2+deb12u1 · amd64 · bookworm
  Not affected
  dsa · openvswitch · debian · bookworm
- 3.1.0-2+deb12u1 · arm64 · bookworm
  Not affected
  dsa · openvswitch · debian · bookworm
- 3.1.0-2+deb12u1 · amd64 · bookworm-security
  Not affected
  dsa · openvswitch · debian · bookworm
- 3.1.0-2+deb12u1 · arm64 · bookworm-security
  Not affected
  dsa · openvswitch · debian · bookworm

Observed: Oct 23, 2026, 6:01:54 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]