Bug 2533606 (CVE-2026-91786) - CVE-2026-91786 gnome-shell: gnome-shell: out-of-bounds read in remote search icon rendering due to unvalidated icon-data buffer size
Summary: CVE-2026-91786 gnome-shell: gnome-shell: out-of-bounds read in remote search ...
Keywords:
Status: NEW
Alias: CVE-2026-91786
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2533681
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-15 07:19 UTC by OSIDB Bzimport
Modified: 2026-09-15 10:48 UTC (History)
2 users (show)

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


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Description OSIDB Bzimport 2026-09-15 07:19:14 UTC
A flaw was found in GNOME Shell's remote search integration. When rendering an icon supplied by a remote search provider over D-Bus, the icon's declared width, height, and row stride are passed to Shell.util_create_pixbuf_from_data() without validating that this geometry is consistent with the actual size of the supplied data buffer. A malicious or compromised search provider can advertise icon dimensions larger than its actual buffer, causing GNOME Shell to read past the end of the buffer when constructing the pixbuf for display. This out-of-bounds read can crash the GNOME Shell process, disrupting the user's session, and could potentially expose adjacent heap memory contents through the rendered icon.


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