CVE catalog

CVE-2021-39920

wireshark: CVE-2021-39920

Severity: Medium · CVSS 4.3CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Published: Nov 17, 2021, 11:00:00 PM UTC
Source: [NVD] · [CVE record]
EPSS: 3.29% · Oct 25, 2026

NULL pointer exception in the IPPUSB dissector in Wireshark 3.4.0 to 3.4.9 allows denial of service via packet injection or crafted capture file

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	wireshark	sid	`4.6.9-1`	fixed
Debian	wireshark	forky	`4.6.9-1`	fixed
Debian	wireshark	trixie	`4.4.18-0+deb13u1`	fixed
Debian	wireshark	trixie-security	`4.4.19-0+deb13u1`	fixed
Debian	wireshark	bookworm	`4.0.17-0+deb12u3`	fixed
Debian	wireshark	bookworm-security	`4.0.17-0+deb12u3`	fixed
Opensuse	wireshark	leap 15.3	`3.4.10-3.62.1`	fixed
Opensuse	wireshark	leap 15.2	`3.4.10-lp152.2.21.1`	fixed
Suse	wireshark	linux enterprise module for basesystem 15 sp2	`3.4.10-3.62.1`	fixed
Suse	wireshark	linux enterprise module for basesystem 15 sp3	`3.4.10-3.62.1`	fixed
Suse	wireshark	linux enterprise module for desktop applications 15 sp2	`3.4.10-3.62.1`	fixed
Suse	wireshark	linux enterprise module for desktop applications 15 sp3	`3.4.10-3.62.1`	fixed
Opensuse	wireshark	tumbleweed	`3.4.10-1.1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	wireshark	source	sid	`3.6.0-1`	not yet assigned	Not reported	Not reported
Debian	wireshark	source	forky	`3.6.0-1`	not yet assigned	Not reported	Not reported
Debian	wireshark	source	trixie	`3.6.0-1`	not yet assigned	Not reported	Not reported
Debian	wireshark	source	bookworm	`3.6.0-1`	not yet assigned	Not reported	Not reported
Opensuse	wireshark	rpm	leap 15.3	`3.4.10-3.62.1`	Not reported	OPENSUSE-SU-2021:3938-1	Not reported
Opensuse	wireshark	rpm	leap 15.2	`3.4.10-lp152.2.21.1`	Not reported	OPENSUSE-SU-2021:1566-1	Not reported
Suse	wireshark	rpm	linux enterprise module for basesystem 15 sp2	`3.4.10-3.62.1`	Not reported	SUSE-SU-2021:3938-1	Not reported
Suse	wireshark	rpm	linux enterprise module for basesystem 15 sp3	`3.4.10-3.62.1`	Not reported	SUSE-SU-2021:3938-1	Not reported
Suse	wireshark	rpm	linux enterprise module for desktop applications 15 sp2	`3.4.10-3.62.1`	Not reported	SUSE-SU-2021:3938-1	Not reported
Suse	wireshark	rpm	linux enterprise module for desktop applications 15 sp3	`3.4.10-3.62.1`	Not reported	SUSE-SU-2021:3938-1	Not reported
Opensuse	wireshark	rpm	tumbleweed	`3.4.10-1.1`	Not reported	OPENSUSE-SU-2024:11641-1	Not reported

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[libwireshark16]Unknown
Source package: [wireshark]
Details (4)
- 4.0.17-0+deb12u3 · amd64 · bookworm
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · arm64 · bookworm
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
[libwireshark-data]Unknown
Source package: [wireshark]
Details (6)
- 4.0.17-0+deb12u3 · all · bookworm
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · all · bookworm
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · all · bookworm-security
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · all · bookworm-security
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.6-1~deb12u1 · all · bookworm-security
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.6-1~deb12u1 · all · bookworm-security
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
[libwireshark-dev]Unknown
Source package: [wireshark]
Details (4)
- 4.0.17-0+deb12u3 · amd64 · bookworm
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · arm64 · bookworm
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
[libwiretap13]Unknown
Source package: [wireshark]
Details (4)
- 4.0.17-0+deb12u3 · amd64 · bookworm
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · arm64 · bookworm
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
[libwiretap-dev]Unknown
Source package: [wireshark]
Details (4)
- 4.0.17-0+deb12u3 · amd64 · bookworm
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · arm64 · bookworm
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
[libwsutil14]Unknown
Source package: [wireshark]
Details (4)
- 4.0.17-0+deb12u3 · amd64 · bookworm
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · arm64 · bookworm
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
[libwsutil-dev]Unknown
Source package: [wireshark]
Details (4)
- 4.0.17-0+deb12u3 · amd64 · bookworm
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · arm64 · bookworm
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
[tshark]Unknown
Source package: [wireshark]
Details (4)
- 4.0.17-0+deb12u3 · amd64 · bookworm
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · arm64 · bookworm
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
[wireshark]Unknown
Details (4)
- 4.0.17-0+deb12u3 · amd64 · bookworm
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · arm64 · bookworm
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
[wireshark-common]Unknown
Source package: [wireshark]
Details (4)
- 4.0.17-0+deb12u3 · amd64 · bookworm
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · arm64 · bookworm
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
[wireshark-dev]Unknown
Source package: [wireshark]
Details (4)
- 4.0.17-0+deb12u3 · amd64 · bookworm
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · arm64 · bookworm
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
[wireshark-doc]Unknown
Source package: [wireshark]
Details (6)
- 4.0.17-0+deb12u3 · all · bookworm
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · all · bookworm
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · all · bookworm-security
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · all · bookworm-security
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.6-1~deb12u1 · all · bookworm-security
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.6-1~deb12u1 · all · bookworm-security
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
[wireshark-gtk]Unknown
Source package: [wireshark]
Details (2)
- 4.0.6-1~deb12u1 · amd64 · bookworm-security
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.6-1~deb12u1 · arm64 · bookworm-security
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
[wireshark-qt]Unknown
Source package: [wireshark]
Details (4)
- 4.0.17-0+deb12u3 · amd64 · bookworm
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · arm64 · bookworm
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12
- 4.0.17-0+deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · bookworm; dsa · wireshark · debian · 12

[Debian 13 (Trixie)]

[libwireshark18]Unknown
Source package: [wireshark]
Details (6)
- 4.4.16-0+deb13u1 · amd64 · trixie
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · 13
- 4.4.16-0+deb13u1 · arm64 · trixie
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · 13
- 4.4.15-0+deb13u1 · amd64 · trixie-security · Historical version
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · 13
- 4.4.18-0+deb13u1 · amd64 · trixie-security · Historical version
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · 13
- 4.4.18-0+deb13u1 · arm64 · trixie-security
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · 13
- 4.4.19-0+deb13u1 · amd64 · trixie-security
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · 13
[libwireshark-data]Unknown
Source package: [wireshark]
Details (6)
- 4.4.16-0+deb13u1 · all · trixie
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · 13
- 4.4.16-0+deb13u1 · all · trixie
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · 13
- 4.4.15-0+deb13u1 · all · trixie-security · Historical version
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · 13
- 4.4.18-0+deb13u1 · all · trixie-security · Historical version
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · 13
- 4.4.18-0+deb13u1 · all · trixie-security
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · 13
- 4.4.19-0+deb13u1 · all · trixie-security
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · 13
[libwireshark-dev]Unknown
Source package: [wireshark]
Details (6)
- 4.4.16-0+deb13u1 · amd64 · trixie
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · 13
- 4.4.16-0+deb13u1 · arm64 · trixie
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · 13
- 4.4.15-0+deb13u1 · amd64 · trixie-security · Historical version
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · 13
- 4.4.18-0+deb13u1 · amd64 · trixie-security · Historical version
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · 13
- 4.4.18-0+deb13u1 · arm64 · trixie-security
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · 13
- 4.4.19-0+deb13u1 · amd64 · trixie-security
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · 13
[libwiretap15]Unknown
Source package: [wireshark]
Details (6)
- 4.4.16-0+deb13u1 · amd64 · trixie
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · 13
- 4.4.16-0+deb13u1 · arm64 · trixie
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · 13
- 4.4.15-0+deb13u1 · amd64 · trixie-security · Historical version
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · 13
- 4.4.18-0+deb13u1 · amd64 · trixie-security · Historical version
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · 13
- 4.4.18-0+deb13u1 · arm64 · trixie-security
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · 13
- 4.4.19-0+deb13u1 · amd64 · trixie-security
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · 13
[libwiretap-dev]Unknown
Source package: [wireshark]
Details (6)
- 4.4.16-0+deb13u1 · amd64 · trixie
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · 13
- 4.4.16-0+deb13u1 · arm64 · trixie
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · 13
- 4.4.15-0+deb13u1 · amd64 · trixie-security · Historical version
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · 13
- 4.4.18-0+deb13u1 · amd64 · trixie-security · Historical version
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · 13
- 4.4.18-0+deb13u1 · arm64 · trixie-security
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · 13
- 4.4.19-0+deb13u1 · amd64 · trixie-security
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · 13
[libwsutil16]Unknown
Source package: [wireshark]
Details (6)
- 4.4.16-0+deb13u1 · amd64 · trixie
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · 13
- 4.4.16-0+deb13u1 · arm64 · trixie
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · 13
- 4.4.15-0+deb13u1 · amd64 · trixie-security · Historical version
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · 13
- 4.4.18-0+deb13u1 · amd64 · trixie-security · Historical version
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · 13
- 4.4.18-0+deb13u1 · arm64 · trixie-security
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · 13
- 4.4.19-0+deb13u1 · amd64 · trixie-security
  Fixed · Fixed: 3.6.0-1
  dsa · wireshark · debian · 13

Next results

Observed: Oct 23, 2026, 6:02:18 PM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX]