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| author |   Fuqian Huang <huangfq.daxian@gmail.com> | 2019-09-27 20:15:44 +0800 |
|---|---|---|
| committer |   Geert Uytterhoeven <geert@linux-m68k.org> | 2019-10-21 09:08:15 +0200 |
| commit | 7cf78b6b12fd5550545e4b73b35dca18bd46b44c (patch) | |
| tree | b2e36206ad1542a39589063985acb88582382365 /arch/m68k/configs/sun3_defconfig | |
| parent | nubus: Remove cast to void pointer (diff) | |
| download | linux-dev-7cf78b6b12fd5550545e4b73b35dca18bd46b44c.tar.xz linux-dev-7cf78b6b12fd5550545e4b73b35dca18bd46b44c.zip | |
m68k: q40: Fix info-leak in rtc_ioctl
When the option is RTC_PLL_GET, pll will be copied to userland
via copy_to_user. pll is initialized using mach_get_rtc_pll indirect
call and mach_get_rtc_pll is only assigned with function
q40_get_rtc_pll in arch/m68k/q40/config.c.
In function q40_get_rtc_pll, the field pll_ctrl is not initialized.
This will leak uninitialized stack content to userland.
Fix this by zeroing the uninitialized field.
Signed-off-by: Fuqian Huang <huangfq.daxian@gmail.com>
Link: https://lore.kernel.org/r/20190927121544.7650-1-huangfq.daxian@gmail.com
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Diffstat (limited to 'arch/m68k/configs/sun3_defconfig')
0 files changed, 0 insertions, 0 deletions