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| author | Markus Armbruster <armbru@redhat.com> | 2011-11-04 11:10:01 +0100 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> | 2011-11-07 08:03:49 +0000 |
| commit | 8af42882a51c632a14d77277df0740f1aa8c958a (patch) | |
| tree | 5dd88832b4fabe453fc84169da51f730b22a7718 /hw/adlib.c | |
| parent | 47e8dd8fe9d83e8b51d40c2b87d7983bd0a78206 (diff) | |
| download | qemu-8af42882a51c632a14d77277df0740f1aa8c958a.tar.gz | |
readline: Fix buffer overrun on re-add to history
readline_hist_add() moves the history entry to the end of history. It
uses memmove() to move rs->history[idx + 1..] to rs->history[idx..].
However, its size argument is off by two array elements, so it writes
one element beyond rs->history[], and reads two.
On my system, this clobbers rs->hist_entry and the hole right after
it. Since the function assigns to rs->hist_entry in time, the bug has
no ill effects for me.
Spotted by Coverity.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Diffstat (limited to 'hw/adlib.c')
0 files changed, 0 insertions, 0 deletions