Bug 2542420 - CVE-2026-101014 opendmarc: OpenDMARC: Denial of Service via off-by-one error in opendmarc_util_cleanup [fedora-all]
Summary: CVE-2026-101014 opendmarc: OpenDMARC: Denial of Service via off-by-one error ...
Keywords:
Status: NEW
Alias: None
Product: Fedora
Classification: Fedora
Component: opendmarc
Version: rawhide
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: ---
Assignee: Kevin Fenzi
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["64088a93-d0ff-4386-94da-d...
Depends On:
Blocks: CVE-2026-101014
TreeView+ depends on / blocked
 
Reported: 2026-09-28 10:51 UTC by Laura Pardo
Modified: 2026-09-28 10:51 UTC (History)
3 users (show)

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

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Description Laura Pardo 2026-09-28 10:51:03 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.

A vulnerability was detected in Trusted Domain Project OpenDMARC up to 1.4.2. Affected by this vulnerability is the function opendmarc_util_cleanup in the library libopendmarc/opendmarc_util.c of the component DMARC Record Parser. Performing a manipulation results in off-by-one. The attack may be initiated remotely. The exploit is now public and may be used. The patch is named b3b1da9264bc80324094a27c71e7369bdedc62ae. To fix this issue, it is recommended to deploy a patch.
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