SB2016083003 - Out-of-bounds write in Linux kernel

Description

This security bulletin contains information about 1 vulnerability.

1) Out-of-bounds write (CVE-ID: CVE-2016-5342)

CWE-ID: CWE-787 - Out-of-bounds write

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.

Heap-based buffer overflow in the wcnss_wlan_write function in drivers/net/wireless/wcnss/wcnss_wlan.c in the wcnss_wlan device driver for the Linux kernel 3.x, as used in Qualcomm Innovation Center (QuIC) Android contributions for MSM devices and other products, allows attackers to cause a denial of service or possibly have unspecified other impact by writing to /dev/wcnss_wlan with an unexpected amount of data.

Remediation

Install update from vendor's website.

References

• http://source.android.com/security/bulletin/2016-10-01.html
• http://www.securityfocus.com/bid/92693
• https://source.codeaurora.org/quic/la/kernel/msm-3.18/commit/?id=579e796cb089324c55e0e689a180575ba81b23d9
• https://www.codeaurora.org/buffer-overflow-vulnerability-wcnsswlanwrite-cve-2016-5342