CVE-2012-1601

Severity: medium (CVSS 4.9 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2012-05-17 · updated 2026-06-16
Weakness: CWE-399

Description

The KVM implementation in the Linux kernel before 3.3.6 allows host OS users to cause a denial of service (NULL pointer dereference and host OS crash) by making a KVM_CREATE_IRQCHIP ioctl call after a virtual CPU already exists.

Affected products

Linux kernel: through 3.3.5

References

http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00005.html
http://rhn.redhat.com/errata/RHSA-2012-0571.html
http://rhn.redhat.com/errata/RHSA-2012-0676.html
http://secunia.com/advisories/49928
http://www.debian.org/security/2012/dsa-2469
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.3.6
http://www.openwall.com/lists/oss-security/2012/03/30/1
http://www.securitytracker.com/id?1026897
https://bugzilla.redhat.com/show_bug.cgi?id=808199
https://github.com/torvalds/linux/commit/9c895160d25a76c21b65bad141b08e8d4f99afef
https://www.suse.com/support/update/announcement/2012/suse-su-20121679-1.html
http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00005.html

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