SB2017041909 - SUSE Linux update for Linux Kernel Live Patch 14 for SLE 12 SP1
Published: April 19, 2017
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 vulnerabilities.
1) Memory corruption (CVE-ID: CVE-2017-7294)
CWE-ID: CWE-119 - Memory corruption
CVSSv4: 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/E:U/U:Clear
The vulnerability allows a local attacker to cause DoS condition or gain elevated privileges on the target system.
The weakness exists in the vmw_surface_define_ioctl function in drivers/gpu/drm/vmwgfx/vmwgfx_surface.c due to missing validation of addition of certain levels data. A local attacker can trigger integer overflow and out-of-bounds write, cause the service to crash or possibly gain root privileges via a crafted ioctl call for a /dev/dri/renderD* device.
2) Heap-out-of-bounds write (CVE-ID: CVE-2017-7308)
CWE-ID: CWE-787 - Out-of-bounds write
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:A/U:Clear
The vulnerability allows a local attacker to cause DoS conditions.
The weakness exists due to improper validation of certain block-size data by the packet_set_ring function in net/packet/af_packet.c. A local attacker can provide specific parameters to the PACKET_RX_RING option on an AF_PACKET socket with a TPACKET_V3 ring buffer version enabled, trigger heap-out-of-bounds write and cause denial of service.
Successful exploitation of the vulnerability results in denial of service.
Remediation
Install update from vendor's website.