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| author | Jan H. Schönherr <[email protected]> | 2017-08-27 18:23:43 +0000 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2017-08-29 11:32:50 +0000 |
| commit | fb1cc2f91664fd8a2e454970480b5413725919f1 (patch) | |
| tree | fce72809a3f0b6248af9f98c0f98323163ef0b86 /drivers/pwm/pwm-stm32-lp.c | |
| parent | x86/boot: Provide more slack space during decompression (diff) | |
| download | kernel-fb1cc2f91664fd8a2e454970480b5413725919f1.tar.gz kernel-fb1cc2f91664fd8a2e454970480b5413725919f1.zip | |
x86/boot: Prevent faulty bootparams.screeninfo from causing harm
If a zero for the number of lines manages to slip through, scroll()
may underflow some offset calculations, causing accesses outside the
video memory.
Make the check in __putstr() more pessimistic to prevent that.
Signed-off-by: Jan H. Schönherr <[email protected]>
Cc: H. Peter Anvin <[email protected]>
Cc: Kees Cook <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
Diffstat (limited to 'drivers/pwm/pwm-stm32-lp.c')
0 files changed, 0 insertions, 0 deletions