| Name | CVE-2020-35505 |
| Description | A NULL pointer dereference flaw was found in the am53c974 SCSI host bus adapter emulation of QEMU in versions before 6.0.0. This issue occurs while handling the 'Information Transfer' command. 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. |
| Source | CVE (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 severity | low |
| Debian Bugs | 984455 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| qemu (PTS) | stretch | 1:2.8+dfsg-6+deb9u9 | vulnerable |
| stretch (security) | 1:2.8+dfsg-6+deb9u16 | vulnerable |
| buster, buster (security) | 1:3.1+dfsg-8+deb10u8 | vulnerable |
| bullseye (security), bullseye | 1:5.2+dfsg-11+deb11u1 | vulnerable |
| bookworm, sid | 1:6.2+dfsg-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| qemu | source | experimental | 1:6.0+dfsg-1~exp0 | | | |
| qemu | source | (unstable) | 1:6.0+dfsg-3 | | | 984455 |
Notes
[bullseye] - qemu <postponed> (Minor issue, revisit when fixed upstream)
[buster] - qemu <postponed> (Fix along in future DSA)
[stretch] - qemu <postponed> (Fix along in future DLA)
https://bugzilla.redhat.com/show_bug.cgi?id=1909769
https://bugs.launchpad.net/qemu/+bug/1910723 (reproducer)