diff options
| author | Felix Held <felix-coreboot@felixheld.de> | 2022-10-25 19:01:49 +0200 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2022-10-26 22:09:39 +0000 |
| commit | ec69bdcd2fb7e2e39a5e61d3eece202291496afb (patch) | |
| tree | 8e77eaf31120a77f45f541e7dc6981e3865834ed /src | |
| parent | 3ad216be1de41e37de0d0decddee28241736970a (diff) | |
mb/amd/mandolin: handle invalid intr_index values in init_tables
Make sure that the intr_index is valid to avoid out-of-bounds writes to
the fch_pic_routing and fch_apic_routing arrays.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I45ab115f3814b212243c4f6cf706daf77b6ff3b2
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68848
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Fred Reitberger <reitbergerfred@gmail.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/mainboard/amd/mandolin/mainboard.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/mainboard/amd/mandolin/mainboard.c b/src/mainboard/amd/mandolin/mainboard.c index 1eb3329d13..397179a68a 100644 --- a/src/mainboard/amd/mandolin/mainboard.c +++ b/src/mainboard/amd/mandolin/mainboard.c @@ -69,6 +69,12 @@ static void init_tables(void) memset(fch_apic_routing, PIRQ_NC, sizeof(fch_apic_routing)); for (i = 0; i < mb_fch_irq_mapping_table_size; i++) { + if (mb_irq_map[i].intr_index >= FCH_IRQ_ROUTING_ENTRIES) { + printk(BIOS_WARNING, + "Invalid IRQ index %u in FCH IRQ routing table entry %zu\n", + mb_irq_map[i].intr_index, i); + continue; + } fch_pic_routing[mb_irq_map[i].intr_index] = mb_irq_map[i].pic_irq_num; fch_apic_routing[mb_irq_map[i].intr_index] = mb_irq_map[i].apic_irq_num; } |