Bug 2566914 - CVE-2026-118384 mtools: mtools: Denial of Service via out-of-bounds write in VFAT parsing [fedora-43]
Summary: CVE-2026-118384 mtools: mtools: Denial of Service via out-of-bounds write in ...
Keywords:
Status: MODIFIED
Alias: None
Product: Fedora
Classification: Fedora
Component: mtools
Version: 43
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: ---
Assignee: Vojtech Trefny
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["45fd65be-9522-4cef-be37-0...
Depends On:
Blocks: CVE-2026-118384
TreeView+ depends on / blocked
 
Reported: 2026-11-04 13:46 UTC by Oleg Sushchenko
Modified: 2026-11-04 14:10 UTC (History)
1 user (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Type: ---
Embargoed:

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Description Oleg Sushchenko 2026-11-04 13:46:10 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

GNU mtools through 4.0.49 has an out-of-bounds write in parse_vses in vfat.c.
Comment 1 Fedora Update System 2026-11-04 14:10:47 UTC 
FEDORA-2026-93ccf43a01 (mtools-4.0.50-1.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-93ccf43a01
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