Revision 3ead7c52bdb0ab44f4bb1feed505a8323cc12ba7 authored by Amanieu d'Antras on 06 August 2015, 22:46:33 UTC, committed by Linus Torvalds on 07 August 2015, 01:39:40 UTC
This function may copy the si_addr_lsb field to user mode when it hasn't been initialized, which can leak kernel stack data to user mode. Just checking the value of si_code is insufficient because the same si_code value is shared between multiple signals. This is solved by checking the value of si_signo in addition to si_code. Signed-off-by: Amanieu d'Antras <amanieu@gmail.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Ingo Molnar <mingo@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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| File | Mode | Size |
|---|---|---|
| Makefile | -rw-r--r-- | 511 bytes |
| asm-offsets.c | -rw-r--r-- | 2.5 KB |
| cpuinfo.c | -rw-r--r-- | 5.6 KB |
| early_printk.c | -rw-r--r-- | 3.0 KB |
| entry.S | -rw-r--r-- | 14.5 KB |
| head.S | -rw-r--r-- | 4.0 KB |
| insnemu.S | -rw-r--r-- | 15.0 KB |
| irq.c | -rw-r--r-- | 2.3 KB |
| kgdb.c | -rw-r--r-- | 5.1 KB |
| misaligned.c | -rw-r--r-- | 5.7 KB |
| module.c | -rw-r--r-- | 3.4 KB |
| nios2_ksyms.c | -rw-r--r-- | 879 bytes |
| process.c | -rw-r--r-- | 6.5 KB |
| prom.c | -rw-r--r-- | 2.8 KB |
| ptrace.c | -rw-r--r-- | 4.4 KB |
| setup.c | -rw-r--r-- | 5.3 KB |
| signal.c | -rw-r--r-- | 8.4 KB |
| sys_nios2.c | -rw-r--r-- | 1.2 KB |
| syscall_table.c | -rw-r--r-- | 905 bytes |
| time.c | -rw-r--r-- | 7.8 KB |
| traps.c | -rw-r--r-- | 4.7 KB |
| vmlinux.lds.S | -rw-r--r-- | 1.6 KB |
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