Description
Race condition in the grant table code in Xen 4.6.x through 4.9.x allows local guest OS administrators to cause a denial of service (free list corruption and host crash) or gain privileges on the host via vectors involving maptrack free list 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 | 4.8.1-1+deb9u3 | — |
| Debian 13 | xen | 4.8.1-1+deb9u3 | — |
| Debian 12 | xen | 4.8.1-1+deb9u3 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | xen | 4.6.5-0ubuntu1.4 | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP3 | xen | 4.9.0_11-3.9.1 | SUSE-SU-2017:2327-2, SUSE-SU-2017:2327-1 |
| SLES 12 SP2 | xen | 4.7.3_03-43.9.1 | SUSE-SU-2017:2326-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP3 | xen | 4.9.0_11-3.9.1 | SUSE-SU-2017:2327-2 |
| SLES for SAP 12 SP2 | xen | 4.7.3_03-43.9.1 | SUSE-SU-2017:2326-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | xen | 4.15.1_01-1.2 | openSUSE-SU-2024:11520-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | xen | 4.9.0-r1 | — |
| Alpine v3.23 | xen | 4.9.0-r1 | — |
| Alpine v3.22 | xen | 4.9.0-r1 | — |
| Alpine v3.21 | xen | 4.9.0-r1 | — |
| Alpine v3.20 | xen | 4.9.0-r1 | — |
Show 17 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | xen | 4.9.0-r1 | — |
| Alpine v3.18 | xen | 4.9.0-r1 | — |
| Alpine v3.17 | xen | 4.9.0-r1 | — |
| Alpine v3.16 | xen | 4.9.0-r1 | — |
| Alpine v3.15 | xen | 4.9.0-r1 | — |
| Alpine v3.14 | xen | 4.9.0-r1 | — |
| Alpine v3.13 | xen | 4.9.0-r1 | — |
| Alpine v3.12 | xen | 4.9.0-r1 | — |
| Alpine v3.11 | xen | 4.9.0-r1 | — |
| Alpine v3.10 | xen | 4.9.0-r1 | — |
| Alpine v3.9 | xen | 4.9.0-r1 | — |
| Alpine v3.8 | xen | 4.9.0-r1 | — |
| Alpine v3.7 | xen | 4.9.0-r1 | — |
| Alpine v3.6 | xen | 4.8.2-r0 | — |
| Alpine v3.5 | xen | 4.7.3-r0 | — |
| Alpine v3.4 | xen | 4.6.6-r0 | — |
| Alpine v3.3 | xen | 4.6.6-r0 | — |
Advisories 4
- SUSE-SU-2017:2326-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:2327-2 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11520-1 xen-4.15.1_01-1.2 on GA media SUSE / openSUSE Security Updates · May 7, 2025
- SUSE-SU-2017:2327-1 Security update for xen SUSE / openSUSE Security Updates · May 2, 2025
References
- https://support.citrix.com/article/CTX225941
- http://xenbits.xen.org/xsa/advisory-228.html
- 100346 vdb-entry
- DSA-3969 vendor-advisory
- [oss-security] 20170815 Xen Security Advisory 228 (CVE-2017-12136) - grant_table: Race conditions with maptrack free list handling mailing-list
- https://bugzilla.redhat.com/show_bug.cgi?id=1477651
- GLSA-201801-14 vendor-advisory
- 1039175 vdb-entry