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CVE-2026-112257— Gimp: gimp: heap out-of-bounds read/write in psd thumbnail loader (load_resource_1033)

Quick assessment

Affected
Red Hat Red Hat Enterprise Linux 10
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 中发现了一个漏洞。PSD 缩略图资源加载器在执行 BGR 到 RGB 通道交换时，使用了固定的 3 字节步长，但未验证 JPEG 缩略图是否为 RGB 格式。攻击者可构造一个灰度 PSD 缩略图，导致插件进程中发生堆缓冲区越界读写，从而引发崩溃，并在受害者浏览或打开该文件时，可能实现任意代码执行。

CVSS 7.8 · High

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-112257

Vulnerability Information
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Vulnerability Title
Gimp: gimp: heap out-of-bounds read/write in psd thumbnail loader (load_resource_1033)
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in GIMP. The PSD thumbnail resource loader performs a BGR-to-RGB channel swap with a fixed 3-byte stride and does not verify that the JPEG thumbnail is RGB. A crafted grayscale PSD thumbnail can cause a heap out-of-bounds read and write in the plug-in process, leading to a crash and potentially arbitrary code execution when the victim browses or opens the file.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
栈缓冲区溢出
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat Enterprise Linux 10 - cpe:/o:redhat:enterprise_linux:10
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-2026-112257

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III. Intelligence Information for CVE-2026-112257

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Other References for CVE-2026-112257 (2)

Same Patch Batch · Red Hat · 2026-10-19 · 10 CVEs total

CVE-2026-16487 8.1 HIGH Bootc: containers-common: bootc: automatic updates can apply unsigned mutable-tag content
CVE-2026-112261 7.8 HIGH Gimp: gimp: use-after-free in xcf loader via prop_selected_path
CVE-2026-112258 7.8 HIGH Gimp: gimp: use-after-free in xcf loader via prop_linked and prop_selection on channels
CVE-2026-103314 7.4 HIGH Stackrox: stackrox: saml response replay allows multiple central authentication tokens
CVE-2026-16460 7.4 HIGH Bootc: ostree: bootc/ostree: staged deployments not revalidated against container signatur
CVE-2026-112260 7.1 HIGH Gimp: gimp: heap out-of-bounds read in xcf text-layer parasite parsing
CVE-2026-112214 6.5 MEDIUM Gstreamer1-plugins-ugly-free: gstreamer1-plugins-ugly-free: unbounded memory allocation in
CVE-2026-112210 6.0 MEDIUM Rhc: rhc: local privilege escalation via symlink following in rhc-canonical-facts.service
CVE-2026-112259 5.5 MEDIUM Gimp: gimp: null pointer dereference in swatchbooker (sbz) palette import

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 10
Same vendor: Red Hat
Same weakness: CWE-121

V. Comments for CVE-2026-112257

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