SB2017042311 - Buffer overflow in Linux kernel
Published: April 23, 2017 Updated: August 8, 2020
Security Bulletin ID
SB2017042311
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) Buffer overflow (CVE-ID: CVE-2017-8070)
CWE-ID: CWE-119 - Memory corruption
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 authenticated user to execute arbitrary code.
drivers/net/usb/catc.c in the Linux kernel 4.9.x before 4.9.11 interacts incorrectly with the CONFIG_VMAP_STACK option, which allows local users to cause a denial of service (system crash or memory corruption) or possibly have unspecified other impact by leveraging use of more than one virtual page for a DMA scatterlist.
Remediation
Install update from vendor's website.
References
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.11
- http://www.openwall.com/lists/oss-security/2017/04/16/4
- http://www.securityfocus.com/bid/98011
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2d6a0e9de03ee658a9adc3bfb2f0ca55dff1e478
- https://github.com/torvalds/linux/commit/2d6a0e9de03ee658a9adc3bfb2f0ca55dff1e478