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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 12:52:54 -0700 |
| commit | 1967b156fd85702f52c5cffaaf7f8f03332ef49e (patch) | |
| tree | f3fe323d1a6692e54c51888ecaa7fc19da06ce14 /lib | |
| parent | d073bb25909b610b3fd986fe87752120c4e6f04b (diff) | |
| download | lwn-1967b156fd85702f52c5cffaaf7f8f03332ef49e.tar.gz lwn-1967b156fd85702f52c5cffaaf7f8f03332ef49e.zip | |
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'lib')
0 files changed, 0 insertions, 0 deletions