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CVE-2026-16768— Gdk-pixbuf: out-of-bounds read in ico parser

Quick assessment

Affected
GNOME gdk-pixbuf
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.

GNOME gdk-pixbuf是GNOME基金会开源的一款图像加载库。 GNOME gdk-pixbuf存在缓冲区错误漏洞，该漏洞源于解析特制ICO文件时对实际调色板大小的边界检查不当，当像素值超出定义调色板范围时导致越界读取，使得攻击者能够通过生成的输出（如图标缩略图）提取堆内容。

CVSS 5.3 · Medium EPSS 0.24% · P14

Affected Version Matrix 6

VendorProduct Version RangeStatus
GNOME gdk-pixbuf any affected
Red Hat Red Hat Enterprise Linux 10 any affected
Red Hat Red Hat Enterprise Linux 6 any affected
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-2026-16768

Vulnerability Information
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Vulnerability Title
Gdk-pixbuf: out-of-bounds read in ico parser
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in gdk-pixbuf. When parsing a specially crafted ICO file with pixel values that exceed the defined palette range, an out-of-bounds read can occur due to improper bounds checking against the actual palette size. This vulnerability causes heap bytes to be interpreted as valid palette indices and rendered as RGB pixel values in the output image, allowing an attacker to extract heap content via the generated output, such as a thumbnail.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
GNOME gdk-pixbuf 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GNOME gdk-pixbuf是GNOME基金会开源的一款图像加载库。 GNOME gdk-pixbuf存在缓冲区错误漏洞，该漏洞源于解析特制ICO文件时对实际调色板大小的边界检查不当，当像素值超出定义调色板范围时导致越界读取，使得攻击者能够通过生成的输出（如图标缩略图）提取堆内容。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
GNOME gdk-pixbuf - -
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-2026-16768

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III. Intelligence Information for CVE-2026-16768

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Patches & Fixes for CVE-2026-16768 (1)

Vendor Advisories for CVE-2026-16768 (1)

IV. Related Vulnerabilities

Same product: gdk-pixbuf
Same vendor: GNOME
Same weakness: CWE-125

V. Comments for CVE-2026-16768

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