diff options
| author | Jacob Garber <jgarber1@ualberta.ca> | 2019-04-08 17:54:35 -0600 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2019-04-11 11:27:41 +0000 |
| commit | f74f6cbde5b51bb85fa3b20b80f482ef41eb7e9b (patch) | |
| tree | f86bee2e4a97d56ec764f48244e9a3240db56b5c /src/northbridge/intel/x4x | |
| parent | 94d61ecab035fbef7e93db8cfbdbabd7c41a264d (diff) | |
nb/intel/{gm45,i945,x4x}: Correct array bounds checks
There will be an out of bounds read if the index is equal
to the array size. Fix the checks to exclude this case.
Found-by: Coverity Scan, CID 1347350, 1347351
Signed-off-by: Jacob Garber <jgarber1@ualberta.ca>
Change-Id: I5b4e8febb68dfd244faf597dfe5cdf509af7a2ae
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32244
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Diffstat (limited to 'src/northbridge/intel/x4x')
| -rw-r--r-- | src/northbridge/intel/x4x/ram_calc.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/northbridge/intel/x4x/ram_calc.c b/src/northbridge/intel/x4x/ram_calc.c index 8f9d739aea..371496985f 100644 --- a/src/northbridge/intel/x4x/ram_calc.c +++ b/src/northbridge/intel/x4x/ram_calc.c @@ -36,7 +36,7 @@ u32 decode_igd_memory_size(const u32 gms) static const u16 ggc2uma[] = { 0, 1, 4, 8, 16, 32, 48, 64, 128, 256, 96, 160, 224, 352 }; - if (gms > ARRAY_SIZE(ggc2uma)) + if (gms >= ARRAY_SIZE(ggc2uma)) die("Bad Graphics Mode Select (GMS) setting.\n"); return ggc2uma[gms] << 10; @@ -47,7 +47,7 @@ u32 decode_igd_gtt_size(const u32 gsm) { static const u8 ggc2gtt[] = { 0, 1, 0, 2, 0, 0, 0, 0, 0, 2, 3, 4}; - if (gsm > ARRAY_SIZE(ggc2gtt)) + if (gsm >= ARRAY_SIZE(ggc2gtt)) die("Bad GTT Graphics Memory Size (GGMS) setting.\n"); return ggc2gtt[gsm] << 10; |