3.8
CWE
190
Advisory Published
CVE Published
Updated

CVE-2020-12829: Integer Overflow

First published: Fri Feb 28 2020(Updated: )

An out-of-bounds read/write vulnerability was found in function Sm501_2d_operation() in hw/display/sm501.c. The OOB flaw is caused by an integer overflow in COPY_AREA when the `rtl` parameter is set to 1, and either `src_y` or `src_x` is less than `operation_height`. Please refer to the following duplicate bug for further details: <a class="bz_bug_link bz_status_CLOSED bz_closed bz_public " title="CLOSED DUPLICATE - QEMU: sm501_2d_operation() in hw/display/sm501.c allows out-of-bounds write and read operations.(CVE request)" href="show_bug.cgi?id=1786026">https://bugzilla.redhat.com/show_bug.cgi?id=1786026</a>. Upstream fix: <a href="https://git.qemu.org/?p=qemu.git;a=commit;h=b15a22bbcbe6a78dc3d88fe3134985e4cdd87de4">https://git.qemu.org/?p=qemu.git;a=commit;h=b15a22bbcbe6a78dc3d88fe3134985e4cdd87de4</a>

Credit: cve@mitre.org cve@mitre.org

Affected SoftwareAffected VersionHow to fix
QEMU qemu<=5.0.1
Canonical Ubuntu Linux=16.04
Canonical Ubuntu Linux=18.04
Canonical Ubuntu Linux=20.04
Debian Debian Linux=10.0
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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Frequently Asked Questions

  • What is CVE-2020-12829?

    CVE-2020-12829 is a vulnerability in the SM501 display driver implementation in QEMU.

  • What is the severity of CVE-2020-12829?

    The severity of CVE-2020-12829 is low with a CVSS score of 3.8.

  • Which software versions are affected by CVE-2020-12829?

    QEMU versions up to 5.0.0 are affected by CVE-2020-12829.

  • How can a local attacker abuse CVE-2020-12829?

    A local attacker can abuse CVE-2020-12829 to crash the QEMU process.

  • Where can I find more information about CVE-2020-12829?

    More information about CVE-2020-12829 can be found at the following references: [Bugzilla](https://bugzilla.redhat.com/show_bug.cgi?id=1808510), [Ubuntu USN](https://usn.ubuntu.com/4467-1/), [Debian DSA](https://www.debian.org/security/2020/dsa-4760).

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