https://github.com/torvalds/linux
Revision 9bf148cb0812595bfdf5100bd2c07e9bec9c6ef5 authored by Colin Ian King on 26 February 2016, 18:55:31 UTC, committed by Thomas Gleixner on 26 February 2016, 21:12:47 UTC
In the unlikely event that regno == nr_registers then we get an array
overrun on regoff because the invalid register check is currently
off-by-one. Fix this with a check that regno is >= nr_registers instead.

Detected with static analysis using CoverityScan.

Fixes: fcc7ffd67991 "x86, mpx: Decode MPX instruction to get bound violation information"
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: "Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/1456512931-3388-1-git-send-email-colin.king@canonical.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
1 parent bf70e55
History
Tip revision: 9bf148cb0812595bfdf5100bd2c07e9bec9c6ef5 authored by Colin Ian King on 26 February 2016, 18:55:31 UTC
x86/mpx: Fix off-by-one comparison with nr_registers
Tip revision: 9bf148c
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