| Name | CVE-2018-20124 |
| Description | hw/rdma/rdma_backend.c in QEMU allows guest OS users to trigger out-of-bounds access via a PvrdmaSqWqe ring element with a large num_sge value. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 922461 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| qemu (PTS) | bullseye | 1:5.2+dfsg-11+deb11u3 | fixed |
| bullseye (security) | 1:5.2+dfsg-11+deb11u2 | fixed |
| bookworm | 1:7.2+dfsg-7+deb12u7 | fixed |
| sid, trixie | 1:9.1.1+ds-5 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| qemu | source | jessie | (not affected) | | | |
| qemu | source | stretch | (not affected) | | | |
| qemu | source | (unstable) | 1:4.1-1 | unimportant | | 922461 |
| qemu-kvm | source | (unstable) | (unfixed) | | | |
Notes
[stretch] - qemu <not-affected> (Vulnerable code not present)
[jessie] - qemu <not-affected> (Vulnerable code not present)
https://lists.gnu.org/archive/html/qemu-devel/2018-12/msg02822.html
https://git.qemu.org/?p=qemu.git;a=commit;h=0e68373cc2b3a063ce067bc0cc3edaf370752890
PVRDMA support not enabled in the binary packages until 1:3.1+dfsg-3, disabled again in 1:3.1+dfsg-4
The issue is in PVRDMA support, cf. https://bugs.debian.org/922461#18