linux

Commit Graph

Author	SHA1	Message	Date
Martin Schwidefsky	52149ba6b0	[S390] user readable uninitialised kernel memory. A user space program can read uninitialised kernel memory by appending to a file from a bad address and then reading the result back. The cause is the copy_from_user function that does not clear the remaining bytes of the kernel buffer after it got a fault on the user space address. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>	2006-09-28 16:56:03 +02:00
Gerald Schaefer	6c2a9e6df6	[S390] Use alternative user-copy operations for new hardware. This introduces new user-copy operations which are optimized for copying more than 256 Bytes on new hardware. Signed-off-by: Gerald Schaefer <geraldsc@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>	2006-09-20 15:59:44 +02:00

Author

SHA1

Message

Date

Martin Schwidefsky

52149ba6b0

[S390] user readable uninitialised kernel memory.

A user space program can read uninitialised kernel memory
by appending to a file from a bad address and then reading
the result back. The cause is the copy_from_user function
that does not clear the remaining bytes of the kernel
buffer after it got a fault on the user space address.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

2006-09-28 16:56:03 +02:00

Gerald Schaefer

6c2a9e6df6

[S390] Use alternative user-copy operations for new hardware.

This introduces new user-copy operations which are optimized for
copying more than 256 Bytes on new hardware.

Signed-off-by: Gerald Schaefer <geraldsc@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

2006-09-20 15:59:44 +02:00

2 Commits (53a5fbdc2dff55161a206ed1a1385a8fa8055c34)