CWE
476
Advisory Published
CVE Published
Updated

CVE-2020-35504: Null Pointer Dereference

First published: Mon Dec 21 2020(Updated: )

A NULL pointer dereference flaw was found in the SCSI emulation support of QEMU in versions before 6.0.0. This flaw allows a privileged guest user to crash the QEMU process on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.

Credit: secalert@redhat.com secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
QEMU qemu<6.0.0
Fedoraproject Fedora=33
Debian Debian Linux=10.0
redhat/qemu<6.0.0
6.0.0
debian/qemu<=1:5.2+dfsg-11+deb11u3<=1:5.2+dfsg-11+deb11u2
1:7.2+dfsg-7+deb12u7
1:9.2.0+ds-2

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Reference Links

Frequently Asked Questions

  • What is CVE-2020-35504?

    CVE-2020-35504 is a vulnerability found in the SCSI emulation support of QEMU.

  • How does CVE-2020-35504 affect systems?

    CVE-2020-35504 allows a privileged guest user to crash the QEMU process on the host, resulting in a denial of service.

  • How severe is CVE-2020-35504?

    CVE-2020-35504 has a severity rating of medium.

  • Which versions of QEMU are affected by CVE-2020-35504?

    QEMU versions before 6.0.0 are affected by CVE-2020-35504.

  • How can I fix CVE-2020-35504?

    The recommended fix for CVE-2020-35504 is to update QEMU to version 6.0.0 or later.

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