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Bug 834010 (CVE-2021-3700) - <sys-apps/usbredir-0.12.0: use-after-free
Summary: <sys-apps/usbredir-0.12.0: use-after-free
Alias: CVE-2021-3700
Product: Gentoo Security
Classification: Unclassified
Component: Vulnerabilities (show other bugs)
Hardware: All Linux
: Normal minor (vote)
Assignee: Gentoo Security
Whiteboard: B3 [glsa?]
Depends on: 834022
  Show dependency tree
Reported: 2022-02-24 22:28 UTC by John Helmert III
Modified: 2022-02-26 15:10 UTC (History)
2 users (show)

See Also:
Package list:
Runtime testing required: ---


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Description John Helmert III archtester Gentoo Infrastructure gentoo-dev Security 2022-02-24 22:28:55 UTC
CVE-2021-3700 (

A use-after-free vulnerability was found in usbredir in versions prior to 0.11.0 in the usbredirparser_serialize() in usbredirparser/usbredirparser.c. This issue occurs when serializing large amounts of buffered write data in the case of a slow or blocked destination.
Comment 1 John Helmert III archtester Gentoo Infrastructure gentoo-dev Security 2022-02-25 22:51:02 UTC
Please cleanup
Comment 2 Larry the Git Cow gentoo-dev 2022-02-26 08:33:31 UTC
The bug has been referenced in the following commit(s):

commit 6155841f76ceaeaab548ff7be7eff3b7485b58b1
Author:     Joonas Niilola <>
AuthorDate: 2022-02-26 08:33:00 +0000
Commit:     Joonas Niilola <>
CommitDate: 2022-02-26 08:33:00 +0000

    sys-apps/usbredir: drop 0.9.0
    Signed-off-by: Joonas Niilola <>

 sys-apps/usbredir/Manifest              |  1 -
 sys-apps/usbredir/usbredir-0.9.0.ebuild | 45 ---------------------------------
 2 files changed, 46 deletions(-)