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| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2014-06-23 15:29:40 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-07-31 12:54:53 -0700 |
| commit | 883ea134ae75eb03c9f08553a81957a808cee96b (patch) | |
| tree | 9d805c88201a61c13cf8634b96f2576aa2e95532 /kernel/posix-timers.c | |
| parent | e5c662d1f7ced868472bdf3abb4215202c0e467f (diff) | |
s390/ptrace: fix PSW mask check
commit dab6cf55f81a6e16b8147aed9a843e1691dcd318 upstream.
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
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel/posix-timers.c')
0 files changed, 0 insertions, 0 deletions