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[SECURITY] [DLA 4276-1] webkit2gtk security update



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Debian LTS Advisory DLA-4276-1                debian-lts@lists.debian.org
https://www.debian.org/lts/security/               Emilio Pozuelo Monfort
August 20, 2025                               https://wiki.debian.org/LTS
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Package        : webkit2gtk
Version        : 2.48.5-1~deb11u1
CVE ID         : CVE-2025-6558 CVE-2025-31273 CVE-2025-31278 CVE-2025-43211
                 CVE-2025-43212 CVE-2025-43216 CVE-2025-43227 CVE-2025-43228
                 CVE-2025-43240 CVE-2025-43265

The following vulnerabilities have been discovered in the WebKitGTK
web engine:

CVE-2025-6558

    Clement Lecigne and Vlad Stolyarov discovered that processing
    maliciously crafted web content may lead to an unexpected crash.

CVE-2025-31273

    Yuhao Hu, Yan Kang, Chenggang Wu, and Xiaojie Wei discovered that
    processing maliciously crafted web content may lead to memory
    corruption.

CVE-2025-31278

    Yuhao Hu, Yan Kang, Chenggang Wu, and Xiaojie Wei discovered that
    processing maliciously crafted web content may lead to memory
    corruption.

CVE-2025-43211

    Yuhao Hu, Yan Kang, Chenggang Wu, and Xiaojie Wei discovered that
    processing web content may lead to a denial-of-service.

CVE-2025-43212

    Nan Wang and Ziling Chen discovered that processing maliciously
    crafted web content may lead to an unexpected crash.

CVE-2025-43216

    Ignacio Sanmillan discovered that processing maliciously crafted
    web content may lead to an unexpected crash.

CVE-2025-43227

    Gilad Moav discovered that processing maliciously crafted web
    content may disclose sensitive user information.

CVE-2025-43228

    Jaydev Ahire discovered that visiting a malicious website may lead
    to address bar spoofing.

CVE-2025-43240

    Syarif Muhammad Sajjad discovered that a download's origin may be
    incorrectly associated.

CVE-2025-43265

    HexRabbit discovered that processing maliciously crafted web
    content may disclose internal states of the app.

For Debian 11 bullseye, these problems have been fixed in version
2.48.5-1~deb11u1.

We recommend that you upgrade your webkit2gtk packages.

For the detailed security status of webkit2gtk please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/webkit2gtk

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
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