Description
The memory_exchange function in common/memory.c in Xen 3.2.x through 4.6.x does not properly release locks, which might allow guest OS administrators to cause a denial of service (deadlock or host crash) via unspecified vectors, related to XENMEM_exchange error handling.
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 | xen | 4.8.0~rc3-1 | — |
| Debian 13 | xen | 4.8.0~rc3-1 | — |
| Debian 12 | xen | 4.8.0~rc3-1 | — |
| Debian 8 | xen | 4.4.1-9+deb8u4 | DSA-3519-1 |
| Debian 7 | xen | 4.1.6.1-1+deb7u1 | DLA-479-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | xen | 4.4.2-0ubuntu0.14.04.4 | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP1 | xen | 4.5.2_02-4.1 | SUSE-SU-2015:2324-1 |
| SLES 12 | xen | 4.4.3_06-22.15.1 | SUSE-SU-2015:2328-1 |
| SLES 11 SP4 | xen | 4.4.3_06-29.1 | SUSE-SU-2015:2338-1 |
| SLES 11 SP3 | xen | 4.2.5_18-21.1 | SUSE-SU-2015:2326-1 |
| SLES 11 SP2 | xen | 4.1.6_08-23.1 | SUSE-SU-2015:2306-1 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP1 | xen | 4.5.2_02-4.1 | SUSE-SU-2015:2324-1 |
| SLES for SAP 12 | xen | 4.4.3_06-22.15.1 | SUSE-SU-2015:2328-1 |
| SLES for SAP 11 SP4 | xen | 4.4.3_06-29.1 | SUSE-SU-2015:2338-1 |
| SLES for SAP 11 SP3 | xen | 4.2.5_18-21.1 | SUSE-SU-2015:2326-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | xen | 4.7.0_12-1.3 | openSUSE-SU-2024:10196-1 |
Advisories 8
- DLA-479-1 xen - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3519-1 xen - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2015:2328-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:2324-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:2326-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:2306-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:2338-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10196-1 xen-4.7.0_12-1.3 on GA media SUSE / openSUSE Security Updates · May 7, 2025
References
- DSA-3519 vendor-advisory
- http://xenbits.xen.org/xsa/advisory-159.html
- 1034391 vdb-entry
- http://support.citrix.com/article/CTX203451
- GLSA-201604-03 vendor-advisory
- 79038 vdb-entry