SB2015031607 - Denial of service in Linux kernel
Published: March 16, 2015 Updated: June 25, 2024
Security Bulletin ID
SB2015031607
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-2014-8173)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error within the pmd_none_or_trans_huge_or_clear_bad() function in include/asm-generic/pgtable.h on NUMA systems. A local user can trigger denial of service conditions via a crafted MADV_WILLNEED madvise system call that leverages the absence of a page-table lock.
Remediation
Install update from vendor's website.
References
- https://github.com/torvalds/linux/commit/ee53664bda169f519ce3c6a22d378f0b946c8178
- https://bugzilla.redhat.com/show_bug.cgi?id=1198457
- http://rhn.redhat.com/errata/RHSA-2015-0290.html
- http://rhn.redhat.com/errata/RHSA-2015-0694.html
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00009.html
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=ee53664bda169f519ce3c6a22d378f0b946c8178