SB2017020618 - Buffer overflow in Linux kernel
Published: February 6, 2017 Updated: August 8, 2020
Security Bulletin ID
SB2017020618
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Buffer overflow (CVE-ID: CVE-2016-10154)
The vulnerability allows a local authenticated user to perform a denial of service (DoS) attack.
The smbhash function in fs/cifs/smbencrypt.c in the Linux kernel 4.9.x before 4.9.1 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 scatterlist.
Remediation
Install update from vendor's website.
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=06deeec77a5a689cc94b21a8a91a76e42176685d
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.1
- http://www.openwall.com/lists/oss-security/2017/01/21/3
- http://www.securityfocus.com/bid/95714
- https://bugzilla.redhat.com/show_bug.cgi?id=1416104
- https://github.com/torvalds/linux/commit/06deeec77a5a689cc94b21a8a91a76e42176685d