Files
android_kernel_xiaomi_sm8450/arch/s390/kernel/ptrace.c
Martin Schwidefsky dab6cf55f8 s390/ptrace: fix PSW mask check
The PSW mask check of the PTRACE_POKEUSR_AREA command is incorrect.
The PSW_MASK_USER define contains the PSW_MASK_ASC bits, the ptrace
interface accepts all combinations for the address-space-control
bits. To protect the kernel space the PSW mask check in ptrace needs
to reject the address-space-control bit combination for home space.

Fixes CVE-2014-3534

Cc: stable@vger.kernel.org
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2014-07-16 10:48:11 +02:00

37 KiB