Description
An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service or gain privileges because of an incompatibility between Process Context Identifiers (PCID) and TLB flushes.
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 | 4.11.1+92-g6c33308a8d-1 | — |
| Debian 13 | xen | 4.11.1+92-g6c33308a8d-1 | — |
| Debian 12 | xen | 4.11.1+92-g6c33308a8d-1 | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 | xen | 4.10.4_04-3.22.1 | SUSE-RU-2019:2767-1 |
| SLES 12 SP4 | xen | 4.11.2_02-2.14.2 | SUSE-SU-2019:2753-1 |
| SLES 12 SP3 | xen | 4.9.4_04-3.56.2 | SUSE-SU-2019:2769-1 |
| SLES 12 SP2 | xen | 4.7.6_06-43.54.2 | SUSE-SU-2019:2783-1 |
| SLES 11 SP4 | xen | 4.4.4_40-61.49.1 | SUSE-SU-2019:14199-1 |
Show 9 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP4 | xen | 4.11.2_02-2.14.2 | SUSE-SU-2019:2753-1 |
| SLES for SAP 12 SP3 | xen | 4.9.4_04-3.56.2 | SUSE-SU-2019:2769-1 |
| SLES for SAP 12 SP2 | xen | 4.7.6_06-43.54.2 | SUSE-SU-2019:2783-1 |
| SUSE OpenStack Cloud Crowbar 8 | xen | 4.9.4_04-3.56.2 | SUSE-SU-2019:2769-1 |
| SUSE OpenStack Cloud 8 | xen | 4.9.4_04-3.56.2 | SUSE-SU-2019:2769-1 |
| SUSE OpenStack Cloud 7 | xen | 4.7.6_06-43.54.2 | SUSE-SU-2019:2783-1 |
| SUSE HPE Helion OpenStack 8 | xen | 4.9.4_04-3.56.2 | SUSE-SU-2019:2769-1 |
| SUSE Enterprise Storage 5 | xen | 4.9.4_04-3.56.2 | SUSE-SU-2019:2769-1 |
| SUSE Enterprise Storage 4 | xen | 4.7.6_06-43.54.2 | SUSE-SU-2019:2783-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.9 | xen | 4.11.2-r0 | — |
Advisories 5
- SUSE-SU-2019:14199-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:2753-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-RU-2019:2767-1 Recommended update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:2783-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:2769-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
References
- http://xenbits.xen.org/xsa/advisory-292.html
- https://xenbits.xen.org/xsa/advisory-292.html
- [oss-security] 20191025 Xen Security Advisory 292 v3 (CVE-2019-17346) - x86: insufficient TLB flushing when using PCID mailing-list
- DSA-4602 vendor-advisory
- 20200114 [SECURITY] [DSA 4602-1] xen security update mailing-list