| Name | CVE-2021-3947 |
| Description | A stack-buffer-overflow was found in QEMU in the NVME component. The flaw lies in nvme_changed_nslist() where a malicious guest controlling certain input can read out of bounds memory. A malicious user could use this flaw leading to disclosure of sensitive information. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
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 | fixed |
| buster (security) | 1:3.1+dfsg-8+deb10u11 | fixed |
| bullseye | 1:5.2+dfsg-11+deb11u3 | fixed |
| bullseye (security) | 1:5.2+dfsg-11+deb11u2 | fixed |
| bookworm | 1:7.2+dfsg-7+deb12u2 | fixed |
| trixie | 1:8.1.2+ds-1 | fixed |
| sid | 1:8.1.3+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 | (not affected) | | | |
| qemu | source | buster | (not affected) | | | |
| qemu | source | bullseye | (not affected) | | | |
| qemu | source | (unstable) | 1:6.2+dfsg-1 | | | |
Notes
[bullseye] - qemu <not-affected> (Vulnerable code introduced later)
[buster] - qemu <not-affected> (Vulnerable code introduced later)
[stretch] - qemu <not-affected> (Vulnerable code introduced later)
https://bugzilla.redhat.com/show_bug.cgi?id=2021869
Introduced by: https://gitlab.com/qemu-project/qemu/-/commit/f432fdfa1215bc3a00468b2e711176be279b0fd2 (v6.0.0-rc0)
https://lore.kernel.org/qemu-devel/20211111153125.2258176-1-philmd@redhat.com/
Fixed by: https://gitlab.com/qemu-project/qemu/-/commit/e2c57529c9306e4c9aac75d9879f6e7699584a22 (v6.2.0-rc3)