CVE-2012-2625

Severity: low (CVSS 2.7 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2012-10-31 · updated 2026-06-16
Weakness: CWE-20

Description

The PyGrub boot loader in Xen unstable before changeset 25589:60f09d1ab1fe, 4.2.x, and 4.1.x allows local para-virtualized guest users to cause a denial of service (memory consumption) via a large (1) bzip2 or (2) lzma compressed kernel image.

Affected products

xen: 4.1.0, 4.1.1, 4.1.2, 4.1.3, 4.2.0
Xen-Unstable: before 25589\:60f09d1ab1fe — fixed in 25589\:60f09d1ab1fe

How to fix

Upgrade to a fixed version: Xen-Unstable 25589\:60f09d1ab1fe. Check the vendor advisory for mitigations.

References

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1817
http://lists.opensuse.org/opensuse-security-announce/2012-08/msg00024.html
http://lists.opensuse.org/opensuse-security-announce/2012-08/msg00025.html
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00005.html
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00017.html
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00018.html
http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00017.html
http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00018.html
http://rhn.redhat.com/errata/RHSA-2012-1130.html
http://secunia.com/advisories/49184
http://secunia.com/advisories/51413
http://www.openwall.com/lists/oss-security/2012/10/26/3

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