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.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | qemu | 1:4.1-1 | — |
| Debian 13 | qemu | 1:4.1-1 | — |
| Debian 12 | qemu | 1:4.1-1 | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | qemu | 6.1.0-32.1 | openSUSE-SU-2024:11287-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | ivshmem-tools +2 | 15:3.0.0-4.el7 | ELSA-2019-4585, ELSA-2019-4518 |
| Oracle Linux 7 | qemu +9 | 12:2.9.0-20.el7 | ELSA-2019-4585, ELSA-2019-4556, ELSA-2019-4518 |
Advisories 5
- openSUSE-SU-2024:11287-1 qemu-6.1.0-32.1 on GA media SUSE / openSUSE Security Updates · May 7, 2025
- WID-SEC-2024-1994 QEMU: Mehrere Schwachstellen ermöglichen Denial of Service BSI CERT-Bund (WID) · Sep 2, 2024
- ELSA-2019-4585 Important: qemu security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Mar 15, 2019
- ELSA-2019-4556 Important: qemu security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Feb 22, 2019
- ELSA-2019-4518 Important: qemu security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jan 25, 2019
References
- [qemu-devel] 20181213 [PATCH v2 1/6] rdma: check num_sge does not exceed MAX_SGE mailing-list
- [oss-security] 20181218 CVE-2018-20124 QEMU: rdma: OOB access when building scatter-gather array mailing-list
- 106290 vdb-entry
- USN-3923-1 vendor-advisory