| commit | 67b3d3cca385507c4c8b6ad97b823415e038e3c8 | [log] [tgz] |
|---|---|---|
| author | Andrey Konovalov <andreyknvl@google.com> | Thu Jun 04 16:45:51 2020 -0700 |
| committer | Linus Torvalds <torvalds@linux-foundation.org> | Thu Jun 04 19:06:20 2020 -0700 |
| tree | c5ccb706f67e0ebb63d978e30e0be771b31dcd47 | |
| parent | 3c61df3885e91f8737bbbbaba79b908da0e1919f [diff] |
kcov: fix potential use-after-free in kcov_remote_start If vmalloc() fails in kcov_remote_start() we'll access remote->kcov without holding kcov_remote_lock, so remote might potentially be freed at that point. Cache kcov pointer in a local variable. Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Dmitry Vyukov <dvyukov@google.com> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Alexander Potapenko <glider@google.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Marco Elver <elver@google.com> Cc: Andrey Konovalov <andreyknvl@gmail.com> Link: http://lkml.kernel.org/r/9d9134359725a965627b7e8f2652069f86f1d1fa.1585233617.git.andreyknvl@google.com Link: http://lkml.kernel.org/r/de0d3d30ff90776a2a509cc34c7c1c7521bda125.1584655448.git.andreyknvl@google.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>