high
7.8
CWE
119 190
Advisory Published
CVE Published
Updated

CVE-2016-9083: Buffer Overflow

First published: Thu Oct 27 2016(Updated: )

A flaw was discovered in the Linux kernels implementation of VFIO. While issuing an IOCTL, the VFIO_DEVICE_SET_IRQS parameter for vfio PCI devices has a state machine confusion bug where specifying VFIO_IRQ_SET_DATA_NONE along with another bit in VFIO_IRQ_SET_DATA_TYPE_MASK in hdr.flags allows integer overflow checks to be skipped for hdr.start/hdr.count. This might allow memory corruption later in vfio_pci_set_msi_trigger() with user access to an appropriate vfio device file, but it seems difficult to usefully exploit in practice. Proposed patch: <a href="https://patchwork.kernel.org/patch/9373631/">https://patchwork.kernel.org/patch/9373631/</a> CVE assignment: <a href="http://seclists.org/oss-sec/2016/q4/251">http://seclists.org/oss-sec/2016/q4/251</a>

Credit: cve@mitre.org cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Linux Linux kernel>=3.6<3.10.107
Linux Linux kernel>=3.11<3.12.70
Linux Linux kernel>=3.13<3.16.39
Linux Linux kernel>=3.17<3.18.51
Linux Linux kernel>=3.19<4.1.41
Linux Linux kernel>=4.2<4.4.65
Linux Linux kernel>=4.5<4.9
debian/linux
5.10.223-1
5.10.226-1
6.1.115-1
6.1.119-1
6.11.10-1
6.12.5-1

Remedy

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=05692d7005a364add85c6e25a6c4447ce08f913a

Remedy

https://github.com/torvalds/linux/commit/05692d7005a364add85c6e25a6c4447ce08f913a

Remedy

https://patchwork.kernel.org/patch/9373631/

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Reference Links

Frequently Asked Questions

  • What is CVE-2016-9083?

    CVE-2016-9083 is a vulnerability in the Linux kernel that allows local users to bypass integer overflow checks and cause memory corruption or other unspecified impact.

  • How severe is CVE-2016-9083?

    CVE-2016-9083 has a severity level of high with a severity value of 7.

  • What software versions are affected by CVE-2016-9083?

    CVE-2016-9083 affects Linux kernel versions up to 4.8.11.

  • Is there a fix for CVE-2016-9083?

    Yes, upgrading to Linux kernel version 4.9 or later will fix the vulnerability.

  • Where can I find more information about CVE-2016-9083?

    More information about CVE-2016-9083 can be found in the references section of the vulnerability report.

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