Buffer overflow in Linux kernel - CVE-2014-0049
Published: March 11, 2014 / Updated: August 10, 2020
Vulnerability identifier: #VU41950
CSH Severity: Medium
CVSS v4: 8.5 [CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2014-0049
CWE-ID: CWE-119
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote #AU# to execute arbitrary code.
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 software
Linux kernel
Ubuntu
linux (Ubuntu package)
linux-lts-quantal (Ubuntu package)
linux-lts-raring (Ubuntu package)
linux-lts-saucy (Ubuntu package)
Ubuntu
linux (Ubuntu package)
linux-lts-quantal (Ubuntu package)
linux-lts-raring (Ubuntu package)
linux-lts-saucy (Ubuntu package)
How to mitigate CVE-2014-0049
Install update from vendor's website.
linux (Ubuntu package) - addressed in versions 3.5.0-49.73, 3.11.0-20.34
linux-lts-quantal (Ubuntu package) - update to 3.5.0-49.73~precise1
linux-lts-raring (Ubuntu package) - update to 3.8.0-39.57~precise1
linux-lts-saucy (Ubuntu package) - update to 3.11.0-20.34~precise1
linux-lts-quantal (Ubuntu package) - update to 3.5.0-49.73~precise1
linux-lts-raring (Ubuntu package) - update to 3.8.0-39.57~precise1
linux-lts-saucy (Ubuntu package) - update to 3.11.0-20.34~precise1
External References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=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