Bug 2539264 - CVE-2026-84447 libheif: libheif: Denial of Service via crafted HEIF/AVIF image files [fedora-43]
Summary: CVE-2026-84447 libheif: libheif: Denial of Service via crafted HEIF/AVIF imag...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: libheif
Version: 43
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: ---
Assignee: Michel Lind
QA Contact:
URL:
Whiteboard: {"flaws": ["4de272bb-2e8c-41cd-b4b3-6...
Depends On:
Blocks: CVE-AlreadyFixed CVE-2026-84447
TreeView+ depends on / blocked
 
Reported: 2026-09-23 09:08 UTC by Vladimir Vasilev
Modified: 2026-09-26 01:31 UTC (History)
3 users (show)

Fixed In Version: libheif-1.23.5-3.fc43
Clone Of:
Environment:
Last Closed: 2026-09-26 01:31:06 UTC
Type: ---
Embargoed:

Attachments (Terms of Use)

Description Vladimir Vasilev 2026-09-23 09:08:21 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.

libheif is a HEIF and AVIF file format decoder and encoder. In 1.23.1 and earlier, crafted grid, iovl, and iden reference graphs can repeatedly decode the same base image because processed_ids is copied per branch and ImageItem::decode_image() has no shared operation budget. This vulnerability is fixed in 1.23.2.
Comment 1 Michel Lind 2026-09-24 11:00:48 UTC 
This bug is already fixed in a published Bodhi update.
Comment 2 Fedora Update System 2026-09-24 11:01:18 UTC 
FEDORA-2026-022ff83e3e (libheif-1.23.5-3.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-022ff83e3e
Comment 3 Fedora Update System 2026-09-26 01:31:06 UTC 
FEDORA-2026-022ff83e3e (libheif-1.23.5-3.fc43) has been pushed to the Fedora 43 stable repository.
If problem still persists, please make note of it in this bug report.
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