SB2017011821 - NULL pointer dereference in Linux kernel crypto
Published: January 18, 2017
Security Bulletin ID
SB2017011821
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) NULL pointer dereference (CVE-ID: CVE-2016-10147)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the mcryptd_check_internal() and mcryptd_create_hash() functions in crypto/mcryptd.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://github.com/torvalds/linux/commit/48a992727d82cb7db076fa15d372178743b1f4cd
- https://bugzilla.redhat.com/show_bug.cgi?id=1404200
- http://www.openwall.com/lists/oss-security/2017/01/17/13
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.15
- http://marc.info/?l=linux-crypto-vger&m=148063683310477&w=2
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=48a992727d82cb7db076fa15d372178743b1f4cd
- http://www.securityfocus.com/bid/95677
- https://access.redhat.com/errata/RHSA-2017:2077
- https://access.redhat.com/errata/RHSA-2017:1842