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Fencer Vulns
high 8.8

CVE-2019-17346 json

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…

published 2019-10-08 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-7757

cvss
8.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 28%
public exploits
0
none known

Summary

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.

Patch / fix

  • xen Debian 14, Debian 13, Debian 12 4.11.1+92-g6c33308a8d-1

debian advisories DEBIAN-CVE-2019-17346

  • xen SLES for SAP 12 SP2, SLES 12 SP2-LTSS, SLES 12 SP2-BCL +2 more 4.7.6_06-43.54.2
  • xen SLES for SAP 12 SP3, SLES 12 SP3-LTSS, SLES 12 SP3-BCL +4 more 4.9.4_04-3.56.2
  • xen SLE Module for Server Applications 15, SLE Module for Basesystem 15 4.10.4_04-3.22.1
  • xen SLES for SAP 12 SP4, SLES 12 SP4, SLED 12 SP4 +1 more 4.11.2_02-2.14.2
  • xen SLES 11 SP4-LTSS 4.4.4_40-61.49.1

suse advisories SUSE-SU-2019:2783-1SUSE-SU-2019:14199-1SUSE-SU-2019:2769-1SUSE-RU-2019:2767-1SUSE-SU-2019:2753-1

  • xen Alpine 3.9 4.11.2-r0

alpine advisories ALPINE-CVE-2019-17346

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-17346 updated cvss 6.5

xen: xsa292: insufficient TLB flushing when using PCID

  • Red Hat Enterprise Linux 5 xen
    affected: no fix planned “Will not fix”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.35% chance of exploitation in the next 30 days, higher than 28% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
NVD 2.0 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.