Red Hat Bugzilla – Bug 1170691
CVE-2014-9090 kernel: espfix64: local DoS via do_double_fault() due to improper handling of faults associated with SS segment register
Last modified: 2018-08-28 17:56:36 EDT
Common Vulnerabilities and Exposures assigned an identifier CVE-2014-9090 to the following vulnerability: Name: CVE-2014-9090 URL: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-9090 Assigned: 20141126 Reference: http://www.openwall.com/lists/oss-security/2014/11/26/5 Reference: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=6f442be2fb22be02cafa606f1769fa1e6f894441 Reference: https://github.com/torvalds/linux/commit/6f442be2fb22be02cafa606f1769fa1e6f894441 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 when espfix64 is involved, 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.
Statement: Not vulnerable. This issue did not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5, 6, 7 and Red Hat Enterprise Linux MRG 2 because they do not have support for the x86-64 version of ESPfix functionality.
kernel-3.17.4-302.fc21 has been pushed to the Fedora 21 stable repository. If problems still persist, please make note of it in this bug report.
kernel-3.17.6-200.fc20 has been pushed to the Fedora 20 stable repository. If problems still persist, please make note of it in this bug report.
kernel-3.14.27-100.fc19 has been pushed to the Fedora 19 stable repository. If problems still persist, please make note of it in this bug report.