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| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2006-09-28 16:56:03 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2006-09-28 16:56:03 +0200 |
| commit | 52149ba6b0ddf3e9d965257cc0513193650b3ea8 (patch) | |
| tree | af8097516b3cd9d9f2397080e4cf81414fd4172a /Documentation | |
| parent | 51dced544e3964b684afc99282ceceaa384b16a8 (diff) | |
| download | linux-52149ba6b0ddf3e9d965257cc0513193650b3ea8.tar.gz linux-52149ba6b0ddf3e9d965257cc0513193650b3ea8.tar.bz2 linux-52149ba6b0ddf3e9d965257cc0513193650b3ea8.zip | |
[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>
Diffstat (limited to 'Documentation')
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