Severity by source
AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
Local vector because malicious file must be opened locally; AC:H for heap-layout dependency; PR:N and UI:R because no privilege needed but user must open the file; availability-only impact confirmed by description.
Primary rating from Vendor (redhat).
CVSS VectorNVD
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
Lifecycle Timeline
2DescriptionNVD
A flaw was found in gdk-pixbuf. When loading a specially crafted JPEG image containing chunked ICC profile markers, an error during ICC profile parsing can leave stale size metadata after the profile buffer is freed. A subsequent allocation in the same decode can cause an out-of-bounds write, potentially crashing the application. To exploit this flaw, an application using gdk-pixbuf must process the malicious JPEG image.
Affected version >= 2.26.4
AnalysisAI
Out-of-bounds write in gdk-pixbuf's JPEG decoder affects any application on Red Hat Enterprise Linux 6 through 10 that renders JPEG images containing chunked ICC profile markers. When ICC profile parsing encounters an error, stale size metadata persists after the profile buffer is freed; a subsequent allocation within the same decode operation then writes beyond buffer boundaries, crashing the application. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that a user or automated process opens a specially crafted JPEG file using an application that relies on gdk-pixbuf for image decoding - this is the non-negotiable trigger condition. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score of 4.7 (Medium) reflects a constrained threat profile: AV:L indicates the malicious JPEG must be accessible locally, AC:H signals that specific memory layout conditions must align for the write to land harmfully, UI:R requires a user to actively open the file, and the impact is limited entirely to Availability (A:H) with no confidentiality or integrity effect. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker crafts a malicious JPEG file embedding specially structured chunked ICC profile markers that trigger the error path in gdk-pixbuf's ICC reassembly logic, then delivers the file to a target via email attachment, web download, or a shared network folder. When a victim on an affected RHEL system opens the file in any gdk-pixbuf-linked application - such as an image viewer, the Nautilus file manager generating a thumbnail, or a GTK-based application - the out-of-bounds write occurs, crashing the application. … |
| Remediation | An upstream fix is available via GNOME GitLab commit efe658674bd103d1c9bf50809d5767a3f6dd5a01 and merge request 278 (https://gitlab.gnome.org/GNOME/gdk-pixbuf/-/merge_requests/278); however, a specific tagged release version incorporating this fix has not been independently confirmed from the available data. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-67217
GHSA-237w-6c39-25rh