CVE-2014-0049

Severity: high (CVSS 7.4 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2014-03-11 · updated 2026-06-17
Weakness: CWE-120

Description

Buffer overflow in the complete_emulated_mmio function in arch/x86/kvm/x86.c in the Linux kernel before 3.13.6 allows guest OS users to execute arbitrary code on the host OS by leveraging a loop that triggers an invalid memory copy affecting certain cancel_work_item data.

Affected products

Linux kernel: before 3.13.6 — fixed in 3.13.6

How to fix

Upgrade to a fixed version: Linux kernel 3.13.6. Check the vendor advisory for mitigations.

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a08d3b3b99efd509133946056531cdf8f3a0c09b
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.13.6
http://www.openwall.com/lists/oss-security/2014/03/03/1
https://bugzilla.redhat.com/show_bug.cgi?id=1062368
https://github.com/torvalds/linux/commit/a08d3b3b99efd509133946056531cdf8f3a0c09b
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a08d3b3b99efd509133946056531cdf8f3a0c09b
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.13.6
http://www.openwall.com/lists/oss-security/2014/03/03/1
https://bugzilla.redhat.com/show_bug.cgi?id=1062368
https://github.com/torvalds/linux/commit/a08d3b3b99efd509133946056531cdf8f3a0c09b

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