Description
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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
n/a n/a
n/aaffected
References
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html ↗
- http://www.debian.org/security/2014/dsa-3093 ↗
- http://www.openwall.com/lists/oss-security/2014/11/26/5 ↗
- http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html ↗
- https://github.com/torvalds/linux/commit/6f442be2fb22be02cafa606f1769fa1e6f894441 ↗
- http://secunia.com/advisories/62336 ↗
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=6f442be2fb22be02cafa606f1769fa1e6f894441 ↗
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00020.html ↗