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The vulnerability of the memmove() function in the lossless LZ4 data compression algorithm allows an attacker to gain access to confidential data, compromise its integrity, and cause service interruptions.

🗓️ 02 Nov 2021 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType 
bdu_fstec
 bdu_fstec🔗 bdu.fstec.ru👁 4 Views

Memmove vulnerability in lossless LZ4 may exceed buffers, risking data exposure, integrity loss, and service disruption.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
IBM Security Bulletins		Security Bulletin: Cloud Pak for Security uses packages that are vulnerable to several CVEs
19 Oct 202115:38
–ibm
IBM Security Bulletins		Security Bulletin: Multiple Security Vulnerabilities fixed in IBM Security Verify Access
7 Jan 202200:24
–ibm
IBM Security Bulletins		Security Bulletin: IBM QRadar SIEM Application Framework Base Image is vulnerable to using components with Known Vulnerabilities
3 Dec 202118:52
–ibm
IBM Security Bulletins		Security Bulletin: High severity vulnerabilities in libraries used by IBM Spectrum Discover (libraries of libraries)
27 Apr 202222:57
–ibm
ATTACKERKB		CVE-2021-3520
2 Jun 202113:15
–attackerkb
Tenable Nessus		Amazon Linux 2022 : lz4, lz4-devel, lz4-libs (ALAS2022-2022-169)
4 Nov 202200:00
–nessus
Tenable Nessus		Amazon Linux 2023 : lz4, lz4-devel, lz4-libs (ALAS2023-2023-015)
21 Mar 202300:00
–nessus
Tenable Nessus		Alibaba Cloud Linux 3 : 0049: lz4 (ALINUX3-SA-2021:0049)
14 May 202500:00
–nessus
Tenable Nessus		AlmaLinux 8 : lz4 (ALSA-2021:2575)
9 Feb 202200:00
–nessus
Tenable Nessus		CentOS 8 : lz4 (CESA-2021:2575)
3 Jul 202100:00
–nessus
Rows per page
Vulners
Node
yann_colletlz4Range≤1.9.3

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01 Jun 2026 00:00Current
7High risk
Vulners AI Score7
CVSS 27.5
CVSS 39.8
EPSS0.0319
memmovelz4buffer overflowdata exposureintegrity riskservice disruption
4