Gimp: heap out-of-bounds read and stack out-of-bounds access in psd loader from channel-count handling
Published Aug 28, 2026
6.1
MEDIUMCVSS 3.1
EPSS 0.26%
Description
A flaw was found in the file-psd plugin in GIMP. When processing a specially crafted PSD image file, the plugin does not properly validate the channel-count parameter. This incorrect validation leads to improper memory bounds checking, resulting in both a heap out-of-bounds read and a stack out-of-bounds access. This issue can result in an application crash, leading to a denial of service or a limited information disclosure of memory contents.
Affected products
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||
|---|---|---|---|---|---|---|
| GNOME | GIMP | affected |
| |||
| Red Hat | Red Hat Enterprise Linux 7 | affected |
| |||
| Red Hat | Red Hat Enterprise Linux 8 | affected |
| |||
| Red Hat | Red Hat Enterprise Linux 9 | affected |
|
Configuration 2
- 6.0
- 7.0
- 8.0
- 9.0
No data.
Red Hat Enterprise Linux 6
gimp
Out of support scope
Red Hat Enterprise Linux 7
gimp
Fix deferred
Red Hat Enterprise Linux 8
gimp:2.8/gimp
Fix deferred
Red Hat Enterprise Linux 9
gimp
Fix deferred
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | gimp | Out of support scope | n/a |
| Red Hat Enterprise Linux 7 | gimp | Fix deferred | n/a |
| Red Hat Enterprise Linux 8 | gimp:2.8/gimp | Fix deferred | n/a |
| Red Hat Enterprise Linux 9 | gimp | Fix deferred | n/a |
No package ranges for this CVE.
Remediation
Vendor solution
To mitigate this vulnerability, do not open PSD files from untrusted sources with GIMP.
Red Hat statement
To exploit this vulnerability, an attacker needs to convince a user to process a specially crafted PSD image with GIMP, reducing the likelihood of exploitation. Due to this reason, this flaw has been rated with a moderate severity.
Red Hat mitigation
To mitigate this vulnerability, do not open PSD files from untrusted sources with GIMP.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Sep 1, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
Aug–Oct 2026- EPSS v5
Percentile over time
- EPSS v5
Table of values (2 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.26% (0.00264) | 16.61th | v5 (v2026.06.15) |
| Aug 29, 2026 | 0.12% (0.00117) | 1.84th | v5 (v2026.06.15) |
References (5)
- https://access.redhat.com/security/cve/CVE-2026-82343 vdb-entryx_refsource_REDHATVendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2525644 issue-trackingx_refsource_REDHATIssue TrackingVendor Advisory
- https://gitlab.gnome.org/GNOME/gimp/-/work_items/16587 Issue TrackingMitigationVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-82343
- https://www.cve.org/CVERecord?id=CVE-2026-82343
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2026-82343 | vdb-entryx_refsource_REDHATVendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2525644 | issue-trackingx_refsource_REDHATIssue TrackingVendor Advisory | |
| https://gitlab.gnome.org/GNOME/gimp/-/work_items/16587 | Issue TrackingMitigationVendor Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2026-82343 | ||
| https://www.cve.org/CVERecord?id=CVE-2026-82343 |
Change history (0)
No recorded changes yet.