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History

Rik van Riel 34cf99c250 x86/mm, kexec, ima: Use memblock_free_late() from ima_free_kexec_buffer()

The code calling ima_free_kexec_buffer() runs long after the memblock
allocator has already been torn down, potentially resulting in a use
after free in memblock_isolate_range().

With KASAN or KFENCE, this use after free will result in a BUG
from the idle task, and a subsequent kernel panic.

Switch ima_free_kexec_buffer() over to memblock_free_late() to avoid
that bug.

Fixes: fee3ff99bc67 ("powerpc: Move arch independent ima kexec functions to drivers/of/kexec.c")
Suggested-by: Mike Rappoport <rppt@kernel.org>
Signed-off-by: Rik van Riel <riel@surriel.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20230817135558.67274c83@imladris.surriel.com

2023-09-18 09:24:15 +02:00

alpha

Kbuild updates for v6.6

2023-09-05 11:01:47 -07:00

arc

ARC updates for v6.6

2023-09-04 15:38:24 -07:00

arm

ARM:

2023-09-07 13:52:20 -07:00

arm64

RISC-V Patches for the 6.6 Merge Window, Part 2 (try 2)