CVE-2019-11922
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
02 Description
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
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 1.41% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 72.2% of scored records. A rank, not a probability.
- NVD base score
- 8.1 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2019-07-25 20:32Z7 YR AGO
- Last updated
- 2024-08-04 23:10Z2 YR AGO
- Reserved
- 2019-05-13
- Assigning CNA
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')Class
- Data version
- 5.1
- Document digest
- 3540934078a99fa7974242b76a25d8892c7be762f6d683ebfd2c01b54881f045
05 Affected products
06 References
- lists.opensuse.orgopenSUSE-SU-2019:1845http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00008.html
- lists.opensuse.orgopenSUSE-SU-2019:1952http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00062.html
- usn.ubuntu.comUSN-4108-1https://usn.ubuntu.com/4108-1/
- lists.opensuse.orgopenSUSE-SU-2019:2008http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00078.html
- www.oracle.comhttps://www.oracle.com/security-alerts/cpuoct2020.html
- www.facebook.comhttps://www.facebook.com/security/advisories/cve-2019-11922
- github.comhttps://github.com/facebook/zstd/pull/1404/commits/3e5cdf1b6a85843e991d7d10f6a2567c15580da0
07 Fixed in
Debian 12
- libzstd Fixed in 1.3.8+dfsg-2
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- libzstd Fixed in 1.3.8+dfsg-2
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- libzstd Fixed in 1.3.8+dfsg-2
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- libzstd Fixed in 1.3.3+dfsg-2ubuntu1.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 16.04 LTS
- libzstd Fixed in 1.3.1+dfsg-1~ubuntu0.16.04.1+esm2Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.