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Gentoo Linux Security Advisory GLSA 202406-04
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https:\/\/security.gentoo.org\/
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Severity: Normal
Title: LZ4: Memory Corruption
Date: June 22, 2024
Bugs: #791952
ID: 202406-04<\/p>\n
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Synopsis
========<\/p>\n
A vulnerability has been discovered in LZ4, which can lead to memory
corruption.<\/p>\n
Background
==========<\/p>\n
LZ4 is a lossless compression algorithm, providing compression speed >
500 MB\/s per core, scalable with multi-cores CPU. It features an
extremely fast decoder, with speed in multiple GB\/s per core, typically
reaching RAM speed limits on multi-core systems.<\/p>\n
Affected packages
=================<\/p>\n
Package Vulnerable Unaffected
———— ———— ————
app-arch\/lz4 < 1.9.3-r1 >= 1.9.3-r1<\/p>\n
Description
===========<\/p>\n
An attacker who submits a crafted file to an application linked with lz4
may be able to trigger an integer overflow, leading to calling of
memmove() on a negative size argument, causing an out-of-bounds write
and\/or a crash.<\/p>\n
Impact
======<\/p>\n
The greatest impact of this flaw is to availability, with some potential
impact to confidentiality and integrity as well.<\/p>\n
Workaround
==========<\/p>\n
There is no known workaround at this time.<\/p>\n
Resolution
==========<\/p>\n
All LZ4 users should upgrade to the latest version:<\/p>\n
# emerge –sync
# emerge –ask –oneshot –verbose “>=app-arch\/lz4-1.9.3-r1”<\/p>\n
References
==========<\/p>\n[ 1 ] CVE-2021-3520
https:\/\/nvd.nist.gov\/vuln\/detail\/CVE-2021-3520<\/p>\n
Availability
============<\/p>\n
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:<\/p>\n
https:\/\/security.gentoo.org\/glsa\/202406-04<\/p>\n
Concerns?
=========<\/p>\n
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users’ machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https:\/\/bugs.gentoo.org.<\/p>\n
License
=======<\/p>\n
Copyright 2024 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).<\/p>\n
The contents of this document are licensed under the
Creative Commons – Attribution \/ Share Alike license.<\/p>\n
https:\/\/creativecommons.org\/licenses\/by-sa\/2.5<\/p>\n","protected":false},"excerpt":{"rendered":"
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