| Name | CVE-2021-3930 |
| Description | An off-by-one error was found in the SCSI device emulation in QEMU. It could occur while processing MODE SELECT commands in mode_sense_page() if the 'page' argument was set to MODE_PAGE_ALLS (0x3f). A malicious guest could use this flaw to potentially crash QEMU, resulting in a denial of service condition. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-2970-1, DLA-3099-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| qemu (PTS) | buster | 1:3.1+dfsg-8+deb10u8 | vulnerable |
| buster (security) | 1:3.1+dfsg-8+deb10u10 | fixed |
| bullseye (security), bullseye | 1:5.2+dfsg-11+deb11u2 | vulnerable |
| bookworm | 1:7.2+dfsg-7+deb12u1 | fixed |
| trixie | 1:8.1.0+ds-6 | fixed |
| sid | 1:8.1.1+ds-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 | stretch | 1:2.8+dfsg-6+deb9u17 | | DLA-2970-1 | |
| qemu | source | buster | 1:3.1+dfsg-8+deb10u9 | | DLA-3099-1 | |
| qemu | source | (unstable) | 1:6.2+dfsg-1 | | | |
Notes
[bullseye] - qemu <postponed> (Minor issue)
https://bugzilla.redhat.com/show_bug.cgi?id=2020588
https://gitlab.com/qemu-project/qemu/-/issues/546
Fixed by: https://gitlab.com/qemu-project/qemu/-/commit/b3af7fdf9cc537f8f0dd3e2423d83f5c99a457e8 (v6.2.0-rc0)