Description
An issue was discovered in Xen through 4.10.x allowing x86 PV guest OS users to cause a denial of service (host OS CPU hang) via non-preemptable L3/L4 pagetable freeing.
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 | 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5 | — |
| Debian 13 | xen | 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5 | — |
| Debian 12 | xen | 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5 | — |
| Debian 9 | xen | 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5 | DSA-4131-1 |
| Debian 8 | xen | 4.4.4lts4-0+deb8u1 | DLA-1577-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 7 | xen | 4.1.6.lts1-13 | DLA-1300-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | xen | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP3 | xen | 4.9.2_04-3.29.1 | SUSE-SU-2018:1184-1 |
| SLES 12 SP2 | xen | 4.7.5_02-43.27.1 | SUSE-SU-2018:0909-1 |
| SLES 11 SP3 | xen | 4.2.5_21-45.19.1 | SUSE-SU-2018:0678-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP3 | xen | 4.9.2_04-3.29.1 | SUSE-SU-2018:1184-1 |
| SLES for SAP 12 SP2 | xen | 4.7.5_02-43.27.1 | SUSE-SU-2018:0909-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | xen | 4.2.5_21-45.19.1 | SUSE-SU-2018:0678-1 |
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 | 4.10.0-r2 | — |
| Alpine v3.23 | xen | 4.10.0-r2 | — |
| Alpine v3.22 | xen | 4.10.0-r2 | — |
| Alpine v3.21 | xen | 4.10.0-r2 | — |
| Alpine v3.20 | xen | 4.10.0-r2 | — |
Show 16 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | xen | 4.10.0-r2 | — |
| Alpine v3.18 | xen | 4.10.0-r2 | — |
| Alpine v3.17 | xen | 4.10.0-r2 | — |
| Alpine v3.16 | xen | 4.10.0-r2 | — |
| Alpine v3.15 | xen | 4.10.0-r2 | — |
| Alpine v3.14 | xen | 4.10.0-r2 | — |
| Alpine v3.13 | xen | 4.10.0-r2 | — |
| Alpine v3.12 | xen | 4.10.0-r2 | — |
| Alpine v3.11 | xen | 4.10.0-r2 | — |
| Alpine v3.10 | xen | 4.10.0-r2 | — |
| Alpine v3.9 | xen | 4.10.0-r2 | — |
| Alpine v3.8 | xen | 4.10.0-r2 | — |
| Alpine v3.7 | xen | 4.9.1-r4 | — |
| Alpine v3.6 | xen | 4.8.2-r6 | — |
| Alpine v3.5 | xen | 4.7.3-r7 | — |
| Alpine v3.4 | xen | 4.6.3-r4 | — |
Advisories 7
- DLA-1577-1 xen - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-4131-1 xen - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1300-1 xen - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2018:1184-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:0909-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:0678-1 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
References
- https://xenbits.xen.org/xsa/advisory-252.html
- GLSA-201810-06 vendor-advisory
- 1040773 vdb-entry
- [debian-lts-announce] 20181112 [SECURITY] [DLA 1577-1] xen security update mailing-list
- [debian-lts-announce] 20180306 [SECURITY] [DLA 1300-1] xen security update mailing-list
- 103174 vdb-entry
- DSA-4131 vendor-advisory
- https://support.citrix.com/article/CTX232655
- https://support.citrix.com/article/CTX232096