diff options
| author | Seunghun Han <[email protected]> | 2017-07-18 20:03:51 +0900 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2017-07-20 10:27:59 +0200 |
| commit | dad5ab0db8deac535d03e3fe3d8f2892173fa6a4 (patch) | |
| tree | 059f12b39e9be8cf55fabb631d8e57df283f5ff5 /tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/Util.py | |
| parent | 4c07f9046e48c3126978911239e20a5622ad0ad6 (diff) | |
x86/acpi: Prevent out of bound access caused by broken ACPI tables
The bus_irq argument of mp_override_legacy_irq() is used as the index into
the isa_irq_to_gsi[] array. The bus_irq argument originates from
ACPI_MADT_TYPE_IO_APIC and ACPI_MADT_TYPE_INTERRUPT items in the ACPI
tables, but is nowhere sanity checked.
That allows broken or malicious ACPI tables to overwrite memory, which
might cause malfunction, panic or arbitrary code execution.
Add a sanity check and emit a warning when that triggers.
[ tglx: Added warning and rewrote changelog ]
Signed-off-by: Seunghun Han <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Cc: [email protected]
Cc: "Rafael J. Wysocki" <[email protected]>
Cc: [email protected]
Signed-off-by: Ingo Molnar <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/Util.py')
0 files changed, 0 insertions, 0 deletions