Published: 02/05/2016 Updated: 06/05/2016

CVSS v2 Base Score: 4.9 | Impact Score: 6.9 | Exploitability Score: 3.9

CVSS v3 Base Score: 5.5 | Impact Score: 3.6 | Exploitability Score: 1.8

VMScore: 436

Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C

The xsave/xrstor implementation in arch/x86/include/asm/xsave.h in the Linux kernel prior to 3.19.2 creates certain .altinstr_replacement pointers and consequently does not provide any protection against instruction faulting, which allows local users to cause a denial of service (panic) by triggering a fault, as demonstrated by an unaligned memory operand or a non-canonical address memory operand.

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The xsave/xrstor implementation in arch/x86/include/asm/xsaveh in the Linux kernel before 3192 creates certain altinstr_replacement pointers and consequently does not provide any protection against instruction faulting, which allows local users to cause a denial of service (panic) by triggering a fault, as demonstrated by an unaligned memory op ...

CWE-20 http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=06c8173eb92bbfc03a0fe8bb64315857d0badd06 https://bugzilla.redhat.com/show_bug.cgi?id=1204729 http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.19.2 http://www.openwall.com/lists/oss-security/2015/03/22/1 https://github.com/torvalds/linux/commit/06c8173eb92bbfc03a0fe8bb64315857d0badd06 https://nvd.nist.gov https://access.redhat.com/security/cve/cve-2015-2672

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CVE-2015-2672

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