[SECURITY] [DSA 6070-1] webkit2gtk security update

[Alberto Garcia <berto@debian.org>]

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Debian Security Advisory DSA-6070-1                   security@debian.org
https://www.debian.org/security/                           Alberto Garcia
December 04, 2025                     https://www.debian.org/security/faq
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Package        : webkit2gtk
CVE ID         : CVE-2025-43392 CVE-2025-43425 CVE-2025-43427 CVE-2025-43429
                 CVE-2025-43430 CVE-2025-43431 CVE-2025-43432 CVE-2025-43434
                 CVE-2025-43440 CVE-2025-43443

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

CVE-2025-43392

    Tom Van Goethem discovered that a website may exfiltrate image
    data cross-origin.

CVE-2025-43425

    An anonymous researcher discovered that processing maliciously
    crafted web content may lead to an unexpected process crash.

CVE-2025-43427

    Gary Kwong and rheza discovered that processing maliciously
    crafted web content may lead to an unexpected process crash.

CVE-2025-43429

    Google Big Sleep discovered that processing maliciously crafted
    web content may lead to an unexpected process crash.

CVE-2025-43430

    Google Big Sleep discovered that processing maliciously crafted
    web content may lead to an unexpected process crash.

CVE-2025-43431

    Google Big Sleep discovered that processing maliciously crafted
    web content may lead to memory corruption.

CVE-2025-43432

    Hossein Lotfi discovered that processing maliciously crafted web
    content may lead to an unexpected process crash.

CVE-2025-43434

    Google Big Sleep discovered that processing maliciously crafted
    web content may lead to an unexpected browser crash.

CVE-2025-43440

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

CVE-2025-43443

    An anonymous researcher discovered that processing maliciously
    crafted web content may lead to an unexpected process crash.

For the oldstable distribution (bookworm), these problems have been fixed
in version 2.50.2-1~deb12u1.

For the stable distribution (trixie), these problems have been fixed in
version 2.50.2-1~deb13u1.

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 Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org
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