Vulnerability Details : CVE-2011-2519
Xen in the Linux kernel, when running a guest on a host without hardware assisted paging (HAP), allows guest users to cause a denial of service (invalid pointer dereference and hypervisor crash) via the SAHF instruction.
Vulnerability category: Denial of service
Exploit prediction scoring system (EPSS) score for CVE-2011-2519
Probability of exploitation activity in the next 30 days: 0.06%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 23 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2011-2519
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
5.5
|
MEDIUM | AV:A/AC:L/Au:S/C:N/I:N/A:C |
5.1
|
6.9
|
NIST |
CWE ids for CVE-2011-2519
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A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.Assigned by: nvd@nist.gov (Primary)
References for CVE-2011-2519
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http://rhn.redhat.com/errata/RHSA-2011-1212.html
RHSA-2011:1212 - Security Advisory - Red Hat Customer PortalThird Party Advisory
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https://bugzilla.redhat.com/show_bug.cgi?id=718882
718882 – (CVE-2011-2519) CVE-2011-2519 kernel: xen: x86_emulate: fix SAHF emulationIssue Tracking;Third Party Advisory
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http://xenbits.xen.org/hg/xen-3.1-testing.hg/rev/15644
xen-3.1-testing.hg: 3290b4b5ecb4Patch;Vendor Advisory
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http://www.openwall.com/lists/oss-security/2011/08/30/1
oss-security - kernel: CVE-2011-2482/2519Mailing List;Third Party Advisory
Products affected by CVE-2011-2519
- cpe:2.3:o:redhat:enterprise_linux_desktop:5.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server:5.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_workstation:5.0:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*