| commit | 2a017fd82c5402b3c8df5e3d6e5165d9e6147dc1 | |
| author | Grant Hernandez <granthernandez@google.com> | |
| Sat, 13 Jul 2019 08:00:12 +0000 (13 01:00 -0700) | ||
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | |
| Sat, 13 Jul 2019 08:43:10 +0000 (13 01:43 -0700) | ||
| tree | 0659ec983ee48263d7cc8add14bba9343ce16dbf | treesnapshot (tar.gz zip) |
| parent | cc95527cceb3d1aaadd5cc1cf601d466af2e53f2 | commitdiff |
Input: gtco - bounds check collection indent level
The GTCO tablet input driver configures itself from an HID report sent
via USB during the initial enumeration process. Some debugging messages
are generated during the parsing. A debugging message indentation
counter is not bounds checked, leading to the ability for a specially
crafted HID report to cause '-' and null bytes be written past the end
of the indentation array. As long as the kernel has CONFIG_DYNAMIC_DEBUG
enabled, this code will not be optimized out. This was discovered
during code review after a previous syzkaller bug was found in this
driver.
Signed-off-by: Grant Hernandez <granthernandez@google.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The GTCO tablet input driver configures itself from an HID report sent
via USB during the initial enumeration process. Some debugging messages
are generated during the parsing. A debugging message indentation
counter is not bounds checked, leading to the ability for a specially
crafted HID report to cause '-' and null bytes be written past the end
of the indentation array. As long as the kernel has CONFIG_DYNAMIC_DEBUG
enabled, this code will not be optimized out. This was discovered
during code review after a previous syzkaller bug was found in this
driver.
Signed-off-by: Grant Hernandez <granthernandez@google.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
| drivers/input/tablet/gtco.c | diffblobblamehistory |