Red Hat Enterprise Linux XWD Image bytes-per-line out-of-bounds

Summaryinfo

A vulnerability marked as problematic has been reported in Red Hat Enterprise Linux. This affects an unknown part of the component XWD Image Handler. This manipulation of the argument bytes-per-line causes out-of-bounds. This vulnerability is tracked as CVE-2026-80101. The attack is restricted to local execution. No exploit exists.

Detailsinfo

A vulnerability was found in Red Hat Enterprise Linux (the affected version is unknown). It has been declared as problematic. Affected by this vulnerability is an unknown code of the component XWD Image Handler. The manipulation of the argument bytes-per-line with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

A flaw was found in the file-xwd plugin in GIMP. When processing a specially crafted XWD image file, the plugin validates the image width and bytes-per-line parameters independently rather than ensuring their combined values are consistent with the allocated buffer size. This incorrect validation leads to improper bounds checking, causing a heap out-of-bounds read. This issue can result in an application crash, leading to a denial of service, or a limited information disclosure of heap memory contents into the produced image.

It is possible to read the advisory at access.redhat.com. This vulnerability is known as CVE-2026-80101 since 08/25/2026. The exploitation appears to be easy. Attacking locally is a requirement. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/25/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• Operating System

Vendor

• Red Hat

Name

• Enterprise Linux

License

• commercial

Website

• Vendor: https://www.redhat.com/

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