SB2014113002 - Input validation error in Linux kernel
Published: November 30, 2014 Updated: August 9, 2020
Security Bulletin ID
SB2014113002
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Input validation error (CVE-ID: CVE-2014-9090)
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
The do_double_fault function in arch/x86/kernel/traps.c in the Linux kernel through 3.17.4 does not properly handle faults associated with the Stack Segment (SS) segment register, which allows local users to cause a denial of service (panic) via a modify_ldt system call, as demonstrated by sigreturn_32 in the linux-clock-tests test suite.
Remediation
Install update from vendor's website.
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=6f442be2fb22be02cafa606f1769fa1e6f894441
- http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00020.html
- http://secunia.com/advisories/62336
- http://www.debian.org/security/2014/dsa-3093
- http://www.openwall.com/lists/oss-security/2014/11/26/5
- https://github.com/torvalds/linux/commit/6f442be2fb22be02cafa606f1769fa1e6f894441