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Fencer Intel
medium 6.9

CVE-2011-1583 json

Multiple integer overflows in tools/libxc/xc_dom_bzimageloader.c in Xen 3.2, 3.3, 4.0, and 4.1 allow local users to cause a denial of servi…

published 2011-08-12 15 y ago modified 2026-06-16 4 mo ago also EUVD-2011-1583

cvss
6.9
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 53%
public exploits
0
none known

Summary

Multiple integer overflows in tools/libxc/xc_dom_bzimageloader.c in Xen 3.2, 3.3, 4.0, and 4.1 allow local users to cause a denial of service and possibly execute arbitrary code via a crafted paravirtualised guest kernel image that triggers (1) a buffer overflow during a decompression loop or (2) an out-of-bounds read in the loader involving unspecified length fields.

Patch / fix

  • xen Debian 14, Debian 13, Debian 12 4.1.1-1

debian advisories DEBIAN-CVE-2011-1583

  • xen RHEL 5 VIRTUALIZATION, RHEL 5 3.0.3-120.el5_6.2
  • xen-libs RHEL 5 3.0.3-120.el5_6.2

red hat advisories RHSA-2011:0496

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-2011-1583 updated cvss 6.0

xen: insufficiencies in pv kernel image validation

  • Red Hat Enterprise Linux (v. 5.6.z server) xen 3.0.3-120.el5_6.2, xen-libs 3.0.3-120.el5_6.2 Red Hat RHEL Virtualization (v. 5 server) xen 3.0.3-120.el5_6.2, xen-libs 3.0.3-120.el5_6.2
    fixed: vendor fix RHSA-2011:0496

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

0.70% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 6.9 AV:L/AC:M/Au:N/C:C/I:C/A:C

Classification

Weakness

References

Sources

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.