CVE-2026-82343 Gimp: heap out-of-bounds read and stack out-of-bounds access in psd loader from channel-count handling
A crafted PSD file triggers memory errors in GIMP, causing crashes or limited memory disclosure.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-82343?
CVE-2026-82343 is a medium-severity memory corruption vulnerability in Gimp Gimp, published on 28 Aug 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-120
Which versions are affected by CVE-2026-82343?
It affects 2 products.
Products include Gimp Gimp, Redhat Enterprise Linux.
How do I fix CVE-2026-82343?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-82343 being exploited?
There is no known exploitation of CVE-2026-82343 in the wild and no public exploit code.
Other vulnerabilities in Gimp Gimp
Sources
Also known as DEBIAN-CVE-2026-82343, GHSA-cj7r-2p4g-x2hx, UBUNTU-CVE-2026-82343.