CVE-2010-3698

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: 2010-11-26 · updated 2026-06-16
Weakness: CWE-400

Description

The KVM implementation in the Linux kernel before 2.6.36 does not properly reload the FS and GS segment registers, which allows host OS users to cause a denial of service (host OS crash) via a KVM_RUN ioctl call in conjunction with a modified Local Descriptor Table (LDT).

Affected products

Fedoraproject Fedora: 13
Linux kernel: before 2.6.36 — fixed in 2.6.36

How to fix

Upgrade to a fixed version: Linux kernel 2.6.36. Check the vendor advisory for mitigations.

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=9581d442b9058d3699b4be568b6e5eae38a41493
http://lists.fedoraproject.org/pipermail/package-announce/2010-December/052513.html
http://secunia.com/advisories/42745
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.36
http://www.mandriva.com/security/advisories?name=MDVSA-2011:029
http://www.redhat.com/support/errata/RHSA-2010-0842.html
http://www.redhat.com/support/errata/RHSA-2010-0898.html
http://www.securityfocus.com/bid/44500
http://www.vupen.com/english/advisories/2010/3123
http://www.vupen.com/english/advisories/2010/3321
https://bugzilla.redhat.com/show_bug.cgi?id=639879
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=9581d442b9058d3699b4be568b6e5eae38a41493

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