Input validation error in Linux kernel - CVE-2014-9090
Published: November 30, 2014 / Updated: August 9, 2020
Vulnerability identifier: #VU41048
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2014-9090
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
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.
How to mitigate CVE-2014-9090
Install update from vendor's website.
Sources
- 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