CVE catalog

CVE-2019-11922

libzstd: CVE-2019-11922

Severity: High · CVSS 8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: Jan 1, 2019, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 1.42% · Oct 25, 2026

A race condition in the one-pass compression functions of Zstandard prior to version 1.3.8 could allow an attacker to write bytes out of bounds if an output buffer smaller than the recommended size was used.

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	libzstd	sid	`1.5.7+dfsg-4`	fixed
Debian	libzstd	forky	`1.5.7+dfsg-4`	fixed
Debian	libzstd	trixie	`1.5.7+dfsg-1`	fixed
Debian	libzstd	bookworm	`1.5.4+dfsg2-5`	fixed
Alpine	zstd	3.11	`1.3.8-r0`	fixed
Alpine	zstd	3.12	`1.3.8-r0`	fixed
Alpine	zstd	3.13	`1.3.8-r0`	fixed
Alpine	zstd	3.14	`1.3.8-r0`	fixed
Alpine	zstd	3.15	`1.3.8-r0`	fixed
Alpine	zstd	3.16	`1.3.8-r0`	fixed
Alpine	zstd	3.17	`1.3.8-r0`	fixed
Alpine	zstd	3.18	`1.3.8-r0`	fixed
Alpine	zstd	3.19	`1.3.8-r0`	fixed
Alpine	zstd	3.20	`1.3.8-r0`	fixed
Alpine	zstd	3.21	`1.3.8-r0`	fixed
Alpine	zstd	3.22	`1.3.8-r0`	fixed
Alpine	zstd	3.23	`1.3.8-r0`	fixed
Alpine	zstd	3.24	`1.3.8-r0`	fixed
Ubuntu	libzstd	pro	`0.4.5-1`	vulnerable
Ubuntu	libzstd	pro	`0.5.1-1`	vulnerable
Ubuntu	libzstd	pro	`1.3.1+dfsg-1~ubuntu0.16.04.1`	vulnerable
Ubuntu	libzstd	pro	`1.3.1+dfsg-1~ubuntu0.16.04.1+esm1`	vulnerable
Ubuntu	libzstd	pro	`1.3.1+dfsg-1~ubuntu0.16.04.1+esm2`	fixed
Ubuntu	libzstd	pro	`0.4.5-1`	vulnerable
Ubuntu	libzstd	pro	`0.5.1-1`	vulnerable
Ubuntu	libzstd	pro	`1.3.1+dfsg-1~ubuntu0.16.04.1`	vulnerable
Ubuntu	libzstd	pro	`1.3.1+dfsg-1~ubuntu0.16.04.1+esm1`	vulnerable
Ubuntu	libzstd	pro	`1.3.1+dfsg-1~ubuntu0.16.04.1+esm2`	fixed
Ubuntu	libzstd	18.04	`1.3.1+dfsg-1`	vulnerable
Ubuntu	libzstd	18.04	`1.3.2+dfsg-1`	vulnerable
Ubuntu	libzstd	18.04	`1.3.2+dfsg2-1`	vulnerable
Ubuntu	libzstd	18.04	`1.3.3+dfsg-1`	vulnerable
Ubuntu	libzstd	18.04	`1.3.3+dfsg-1ubuntu1`	vulnerable
Ubuntu	libzstd	18.04	`1.3.3+dfsg-2ubuntu1`	vulnerable
Ubuntu	libzstd	18.04	`1.3.3+dfsg-2ubuntu1.1`	fixed
Ubuntu	libzstd	18.04	`1.3.1+dfsg-1`	vulnerable
Ubuntu	libzstd	18.04	`1.3.2+dfsg-1`	vulnerable
Ubuntu	libzstd	18.04	`1.3.2+dfsg2-1`	vulnerable
Ubuntu	libzstd	18.04	`1.3.3+dfsg-1`	vulnerable
Ubuntu	libzstd	18.04	`1.3.3+dfsg-1ubuntu1`	vulnerable
Ubuntu	libzstd	18.04	`1.3.3+dfsg-2ubuntu1`	vulnerable
Ubuntu	libzstd	18.04	`1.3.3+dfsg-2ubuntu1.1`	fixed
Suse	zstd	package hub 15	`1.4.2-bp151.4.3.1`	fixed
Suse	zstd	package hub 15 sp1	`1.4.2-bp151.4.3.1`	fixed
Opensuse	zstd	tumbleweed	`1.5.0-1.13`	fixed
Opensuse	zstd	leap 15.1	`1.4.2-lp151.3.3.1`	fixed
Opensuse	zstd	leap 15.0	`1.4.2-lp150.2.3.1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	libzstd	source	sid	`1.3.8+dfsg-2`	not yet assigned	Not reported	Not reported
Debian	libzstd	source	forky	`1.3.8+dfsg-2`	not yet assigned	Not reported	Not reported
Debian	libzstd	source	trixie	`1.3.8+dfsg-2`	not yet assigned	Not reported	Not reported
Debian	libzstd	source	bookworm	`1.3.8+dfsg-2`	not yet assigned	Not reported	Not reported
Alpine	zstd	apk	3.11	`1.3.8-r0`	Not reported	ALPINE-CVE-2019-11922	Not reported
Alpine	zstd	apk	3.12	`1.3.8-r0`	Not reported	ALPINE-CVE-2019-11922	Not reported
Alpine	zstd	apk	3.13	`1.3.8-r0`	Not reported	ALPINE-CVE-2019-11922	Not reported
Alpine	zstd	apk	3.14	`1.3.8-r0`	Not reported	ALPINE-CVE-2019-11922	Not reported
Alpine	zstd	apk	3.15	`1.3.8-r0`	Not reported	ALPINE-CVE-2019-11922	Not reported
Alpine	zstd	apk	3.16	`1.3.8-r0`	Not reported	ALPINE-CVE-2019-11922	Not reported
Alpine	zstd	apk	3.17	`1.3.8-r0`	Not reported	ALPINE-CVE-2019-11922	Not reported
Alpine	zstd	apk	3.18	`1.3.8-r0`	Not reported	ALPINE-CVE-2019-11922	Not reported
Alpine	zstd	apk	3.19	`1.3.8-r0`	Not reported	ALPINE-CVE-2019-11922	Not reported
Alpine	zstd	apk	3.20	`1.3.8-r0`	Not reported	ALPINE-CVE-2019-11922	Not reported
Alpine	zstd	apk	3.21	`1.3.8-r0`	Not reported	ALPINE-CVE-2019-11922	Not reported
Alpine	zstd	apk	3.22	`1.3.8-r0`	Not reported	ALPINE-CVE-2019-11922	Not reported
Alpine	zstd	apk	3.23	`1.3.8-r0`	Not reported	ALPINE-CVE-2019-11922	Not reported
Alpine	zstd	apk	3.24	`1.3.8-r0`	Not reported	ALPINE-CVE-2019-11922	Not reported
Ubuntu	libzstd	deb	pro	`1.3.1+dfsg-1~ubuntu0.16.04.1+esm2`	Not reported	USN-5593-1	Not reported
Ubuntu	libzstd	deb	pro	`1.3.1+dfsg-1~ubuntu0.16.04.1+esm2`	Not reported	UBUNTU-CVE-2019-11922	Not reported
Ubuntu	libzstd	deb	18.04	`1.3.3+dfsg-2ubuntu1.1`	Not reported	UBUNTU-CVE-2019-11922	Not reported
Ubuntu	libzstd	deb	18.04	`1.3.3+dfsg-2ubuntu1.1`	Not reported	USN-4108-1	Not reported
Suse	zstd	rpm	package hub 15	`1.4.2-bp151.4.3.1`	Not reported	OPENSUSE-SU-2019:2008-1	Not reported
Suse	zstd	rpm	package hub 15 sp1	`1.4.2-bp151.4.3.1`	Not reported	OPENSUSE-SU-2019:2008-1	Not reported
Opensuse	zstd	rpm	tumbleweed	`1.5.0-1.13`	Not reported	OPENSUSE-SU-2024:11544-1	Not reported
Opensuse	zstd	rpm	leap 15.1	`1.4.2-lp151.3.3.1`	Not reported	OPENSUSE-SU-2019:1845-1	Not reported
Opensuse	zstd	rpm	leap 15.0	`1.4.2-lp150.2.3.1`	Not reported	OPENSUSE-SU-2019:1952-1	Not reported

OpenFactory catalog packages

[openSUSE Tumbleweed]

[libzstd1]Unknown
Source package: [zstd]
Details (1)
- 1.5.7-6.1 · x86_64 · tumbleweed
  Unknown · Fixed: 1.5.0-1.13
  Version impact unknown
  dsa · zstd · opensuse · tumbleweed
[libzstd1-32bit]Unknown
Source package: [zstd]
Details (1)
- 1.5.7-6.1 · x86_64 · tumbleweed
  Unknown · Fixed: 1.5.0-1.13
  Version impact unknown
  dsa · zstd · opensuse · tumbleweed
[libzstd1-x86-64-v3]Unknown
Source package: [zstd]
Details (1)
- 1.5.7-6.1 · x86_64 · tumbleweed
  Unknown · Fixed: 1.5.0-1.13
  Version impact unknown
  dsa · zstd · opensuse · tumbleweed
[libzstd-devel]Unknown
Source package: [zstd]
Details (1)
- 1.5.7-6.1 · x86_64 · tumbleweed
  Unknown · Fixed: 1.5.0-1.13
  Version impact unknown
  dsa · zstd · opensuse · tumbleweed
[libzstd-devel-32bit]Unknown
Source package: [zstd]
Details (1)
- 1.5.7-6.1 · x86_64 · tumbleweed
  Unknown · Fixed: 1.5.0-1.13
  Version impact unknown
  dsa · zstd · opensuse · tumbleweed
[libzstd-devel-static]Unknown
Source package: [zstd]
Details (1)
- 1.5.7-6.1 · x86_64 · tumbleweed
  Unknown · Fixed: 1.5.0-1.13
  Version impact unknown
  dsa · zstd · opensuse · tumbleweed
[zstd-gzip]Unknown
Source package: [zstd]
Details (1)
- 1.5.7-6.1 · x86_64 · tumbleweed
  Unknown · Fixed: 1.5.0-1.13
  Version impact unknown
  dsa · zstd · opensuse · tumbleweed
[zstd]Fixed
Source package: [zstd]
Details (1)
- 1.5.7-6.1 · x86_64 · tumbleweed
  Fixed · Fixed: 1.5.0-1.13
  dsa · zstd · opensuse · tumbleweed

[Debian 12 (Bookworm)]

[libzstd1]Fixed
Source package: [libzstd]
Details (2)
- 1.5.4+dfsg2-5 · amd64 · bookworm
  Fixed · Fixed: 1.3.8+dfsg-2
  dsa · libzstd · debian · bookworm; dsa · libzstd · debian · 12
- 1.5.4+dfsg2-5 · arm64 · bookworm
  Fixed · Fixed: 1.3.8+dfsg-2
  dsa · libzstd · debian · bookworm; dsa · libzstd · debian · 12
[libzstd-dev]Fixed
Source package: [libzstd]
Details (2)
- 1.5.4+dfsg2-5 · amd64 · bookworm
  Fixed · Fixed: 1.3.8+dfsg-2
  dsa · libzstd · debian · bookworm; dsa · libzstd · debian · 12
- 1.5.4+dfsg2-5 · arm64 · bookworm
  Fixed · Fixed: 1.3.8+dfsg-2
  dsa · libzstd · debian · bookworm; dsa · libzstd · debian · 12
[zstd]Fixed
Source package: [libzstd]
Details (2)
- 1.5.4+dfsg2-5 · amd64 · bookworm
  Fixed · Fixed: 1.3.8+dfsg-2
  dsa · libzstd · debian · bookworm; dsa · libzstd · debian · 12
- 1.5.4+dfsg2-5 · arm64 · bookworm
  Fixed · Fixed: 1.3.8+dfsg-2
  dsa · libzstd · debian · bookworm; dsa · libzstd · debian · 12

[Debian 13 (Trixie)]

[libzstd1]Fixed
Source package: [libzstd]
Details (2)
- 1.5.7+dfsg-1 · amd64 · trixie
  Fixed · Fixed: 1.3.8+dfsg-2
  dsa · libzstd · debian · 13
- 1.5.7+dfsg-1 · arm64 · trixie
  Fixed · Fixed: 1.3.8+dfsg-2
  dsa · libzstd · debian · 13
[libzstd-dev]Fixed
Source package: [libzstd]
Details (2)
- 1.5.7+dfsg-1 · amd64 · trixie
  Fixed · Fixed: 1.3.8+dfsg-2
  dsa · libzstd · debian · 13
- 1.5.7+dfsg-1 · arm64 · trixie
  Fixed · Fixed: 1.3.8+dfsg-2
  dsa · libzstd · debian · 13
[zstd]Fixed
Source package: [libzstd]
Details (2)
- 1.5.7+dfsg-1 · amd64 · trixie
  Fixed · Fixed: 1.3.8+dfsg-2
  dsa · libzstd · debian · 13
- 1.5.7+dfsg-1 · arm64 · trixie
  Fixed · Fixed: 1.3.8+dfsg-2
  dsa · libzstd · debian · 13

Observed: Oct 23, 2026, 5:39:28 PM UTC

References

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