CVE-2019-20808

NameCVE-2019-20808
DescriptionIn QEMU 4.1.0, an out-of-bounds read flaw was found in the ATI VGA implementation. It occurs in the ati_cursor_define() routine while handling MMIO write operations through the ati_mm_write() callback. A malicious guest could abuse this flaw to crash the QEMU process, resulting in a denial of service.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitylow

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
qemu (PTS)stretch1:2.8+dfsg-6+deb9u9fixed
stretch (security)1:2.8+dfsg-6+deb9u16fixed
buster, buster (security)1:3.1+dfsg-8+deb10u8fixed
bullseye1:5.2+dfsg-11fixed
bookworm, sid1:6.1+dfsg-5fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
qemusourcejessie(not affected)
qemusourcestretch(not affected)
qemusourcebuster(not affected)
qemusource(unstable)1:4.2-1

Notes

[buster] - qemu <not-affected> (Vulnerable code introduced later)
[stretch] - qemu <not-affected> (Vulnerable code introduced later)
[jessie] - qemu <not-affected> (Vulnerable code introduced later)
https://git.qemu.org/?p=qemu.git;a=commit;h=aab0e2a661b2b6bf7915c0aefe807fb60d6d9d13 (v4.2.0-rc0)

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