SB2016112808 - Integer overflow in Linux kernel vfio pci driver
Published: November 28, 2016
Security Bulletin ID
SB2016112808
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Integer overflow (CVE-ID: CVE-2016-9084)
CWE-ID: CWE-190 - Integer overflow
CVSSv4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local user to execute arbitrary code.
The vulnerability exists due to integer overflow within the vfio_msi_enable() function in drivers/vfio/pci/vfio_pci_intrs.c, within the vfio_pci_ioctl() function in drivers/vfio/pci/vfio_pci.c. A local user can execute arbitrary code.
Remediation
Install update from vendor's website.
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=05692d7005a364add85c6e25a6c4447ce08f913a
- http://rhn.redhat.com/errata/RHSA-2017-0386.html
- http://rhn.redhat.com/errata/RHSA-2017-0387.html
- http://www.openwall.com/lists/oss-security/2016/10/26/11
- http://www.securityfocus.com/bid/93930
- https://bugzilla.redhat.com/show_bug.cgi?id=1389259
- https://github.com/torvalds/linux/commit/05692d7005a364add85c6e25a6c4447ce08f913a
- https://patchwork.kernel.org/patch/9373631/