diff options
| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2014-06-23 15:29:40 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-07-31 12:53:52 -0700 |
| commit | a940d7b23bc073c774f3733c79f82102ffccff4e (patch) | |
| tree | a7a0442f16279c3f93bb2887ecea382cbf586081 /arch/x86 | |
| parent | e1d8240bdd4d65dd1de6eda2b2351ddd2fbb9ca4 (diff) | |
| download | lwn-a940d7b23bc073c774f3733c79f82102ffccff4e.tar.gz lwn-a940d7b23bc073c774f3733c79f82102ffccff4e.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>
Cc: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/x86')
0 files changed, 0 insertions, 0 deletions