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CVE-2026-80101— Gimp: multiple heap out-of-bounds reads in xwd loader from unrelated width and bytes-per-line validation

Quick assessment

Affected
GNOME GIMP
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 GIMP 的 file-xwd 插件中发现了一个缺陷。当处理特制的 XWD 图像文件时，该插件会独立验证图像宽度（image width）和每行字节数（bytes-per-line）参数，而不是确保这两个参数的组合值与已分配缓冲区的大小一致。这种不正确的验证方式会导致边界检查不当，从而引发堆外读（heap out-of-bounds read）。此问题可能导致应用程序崩溃，造成拒绝服务（Denial of Service）；也可能导致有限的信息泄露，将堆内存内容错误地写入到输出的图像文件中。

CVSS 4.4 · Medium EPSS 0.15% · P4

Affected Version Matrix 5

VendorProduct Version RangeStatus
GNOME GIMP any affected
Red Hat Red Hat Enterprise Linux 6 any unknown
Red Hat Red Hat Enterprise Linux 7 any affected
Red Hat Red Hat Enterprise Linux 8 any affected
Red Hat Red Hat Enterprise Linux 9 any affected
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I. Basic Information for CVE-2026-80101

Vulnerability Information
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Vulnerability Title
Gimp: multiple heap out-of-bounds reads in xwd loader from unrelated width and bytes-per-line validation
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
GNOME GIMP - -
Red Hat Red Hat Enterprise Linux 6 - cpe:/o:redhat:enterprise_linux:6
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 8 - cpe:/o:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9

II. Public POCs for CVE-2026-80101

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III. Intelligence Information for CVE-2026-80101

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Patches & Fixes for CVE-2026-80101 (1)

Other References for CVE-2026-80101 (1)

IV. Related Vulnerabilities

Same product: GIMP
Same vendor: GNOME
Same weakness: CWE-125

V. Comments for CVE-2026-80101

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