CVE-2012-4535 json
Xen 3.4 through 4.2, and possibly earlier versions, allows local guest OS administrators to cause a denial of service (Xen infinite loop an…
published 2012-11-21 13 y ago modified 2026-06-16 4 mo ago also EUVD-2012-4463
- cvss
- 1.9
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 34%
- public exploits
- 0
- none known
Summary
Xen 3.4 through 4.2, and possibly earlier versions, allows local guest OS administrators to cause a denial of service (Xen infinite loop and physical CPU consumption) by setting a VCPU with an "inappropriate deadline."
Patch / fix
- xen Debian 14, Debian 13, Debian 12 4.1.3-4
debian advisories DEBIAN-CVE-2012-4535
- kernel RHEL 5 2.6.18-308.24.1.el5
- kernel-PAE RHEL 5 2.6.18-308.24.1.el5
- kernel-xen RHEL 5 2.6.18-308.24.1.el5
- kernel-kdump RHEL 5 2.6.18-308.24.1.el5
- kernel-debuginfo-common RHEL 5 2.6.18-308.24.1.el5
red hat advisories RHSA-2012:1540
- xen openSUSE Tumbleweed 4.7.0_12-1.3
opensuse advisories openSUSE-SU-2024:10196-1
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-2012-4535 updated cvss 5.5
kernel: xen: VCPU timer overflow leads to PCPU deadlock and host death-by-watchdog
-
Red Hat Enterprise Linux (v. 5 server) kernel 2.6.18-308.24.1.el5, kernel-PAE 2.6.18-308.24.1.el5, kernel-xen 2.6.18-308.24.1.el5, kernel-kdump 2.6.18-308.24.1.el5, kernel-debuginfo-common 2.6.18-308.24.1.el5 Red Hat Enterprise Linux Desktop (v. 5 client) kernel 2.6.18-308.24.1.el5, kernel-PAE 2.6.18-308.24.1.el5, kernel-xen 2.6.18-308.24.1.el5, kernel-kdump 2.6.18-308.24.1.el5, kernel-debuginfo-common 2.6.18-308.24.1.el5fixed: vendor fix RHSA-2012:1540
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
0.40% chance of exploitation in the next 30 days, higher than 34% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 1.9 | AV:L/AC:M/Au:N/C:N/I:N/A:P |
Classification
- Weakness
-
- CWE-399 Resource Management Errors
References
-
rhn.redhat.com
/errata/RHSA-2012-1540.html
vendor-advisory
-
lists.opensuse.org
/opensuse-security-announce/2014-04/msg00000.html
vendor-advisory
-
security.gentoo.org
/glsa/glsa-201309-24.xml
vendor-advisory
-
debian.org
/security/2012/dsa-2582
vendor-advisory
-
lists.opensuse.org
/opensuse-security-announce/2012-11/msg00008.html
vendor-advisory
-
lists.opensuse.org
/opensuse-security-announce/2012-11/msg00017.html
vendor-advisory
-
lists.opensuse.org
/opensuse-security-announce/2012-11/msg00009.html
vendor-advisory
-
lists.opensuse.org
/opensuse-security-announce/2014-03/msg00021.html
vendor-advisory
-
security.gentoo.org
/glsa/201604-03
vendor-advisory
-
lists.opensuse.org
/opensuse-security-announce/2012-12/msg00001.html
vendor-advisory
-
lists.opensuse.org
/opensuse-security-announce/2012-11/msg00018.html
vendor-advisory
-
lists.xen.org
/archives/html/xen-announce/2012-11/msg00001.html
mailing-list, vendor-advisory
-
secunia.com
/advisories/55082
third-party-advisory
-
securitytracker.com
/id?1027759
vdb-entry
-
secunia.com
/advisories/51413
third-party-advisory
-
secunia.com
/advisories/51200
third-party-advisory
-
osvdb.org
/87298
vdb-entry
-
openwall.com
/lists/oss-security/2012/11/13/1
mailing-list
-
secunia.com
/advisories/51468
third-party-advisory
-
exchange.xforce.ibmcloud.com
/vulnerabilities/80022
vdb-entry
-
secunia.com
/advisories/51352
third-party-advisory
-
secunia.com
/advisories/51324
third-party-advisory
-
securityfocus.com
/bid/56498
vdb-entry
Sources
- CVE List CVE-2012-4535
- NVD CVE-2012-4535
Fencer Intel 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.