Description
A stack buffer overflow flaw was found in the Quick Emulator (QEMU) before 2.9 built with the Network Block Device (NBD) client support. The flaw could occur while processing server's response to a 'NBD_OPT_LIST' request. A malicious NBD server could use this issue to crash a remote NBD client resulting in DoS or potentially execute arbitrary code on client host with privileges of the QEMU process.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| QEMU | Qemu: | 2.9 | — |
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 | 1:2.8+dfsg-3 | — |
| Debian 13 | qemu | 1:2.8+dfsg-3 | — |
| Debian 12 | qemu | 1:2.8+dfsg-3 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | qemu-img-rhev +3 | 10:2.9.0-14.el7 | RHSA-2017:2392 |
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 | 15:3.0.0-1.el7 | ELSA-2019-4585, ELSA-2018-4285 |
| Oracle Linux 7 | qemu +9 | 12:2.9.0-17.el7 | ELSA-2019-4585, ELSA-2018-4289, ELSA-2018-4285 |
Advisories 7
- RHSA-2017:2392 Red Hat Security Advisory: qemu-kvm-rhev security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jul 1, 2026
- openSUSE-SU-2024:11287-1 qemu-6.1.0-32.1 on GA media SUSE / openSUSE Security Updates · May 7, 2025
- WID-SEC-2024-2029 QEMU: Mehrere Schwachstellen 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-2018-4289 Important: qemu security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Nov 28, 2018
- ELSA-2018-4285 Important: qemu security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Nov 20, 2018
- ELSA-2018-4262 Important: qemu security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Oct 29, 2018
References
- RHSA-2017:2392 vendor-advisory
- 96265 vdb-entry
- GLSA-201704-01 vendor-advisory
- [oss-security] 20170215 CVE-2017-2630 Qemu: nbd: oob stack write in client routine drop_sync mailing-list
- [qemu-devel] 20170206 [PATCH 05/18] nbd/client: fix drop_sync mailing-list
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2630
- https://bugzilla.redhat.com/show_bug.cgi?id=1422415
- https://github.com/qemu/qemu/commit/2563c9c6b8670400c48e562034b321a7cf3d9a85