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authorRichard Spiegel <richard.spiegel@silverbackltd.com>2017-11-28 06:54:02 -0700
committerMartin Roth <martinroth@google.com>2017-11-30 18:35:53 +0000
commit4195b10d5267d7b48fc57cb9a50d6d6f48d73439 (patch)
tree908f8069f6b16880fcb3372ccdf391875e19113b /src/soc
parentb077b91e60d58e528181b9e874cc222474ee60cd (diff)
downloadcoreboot-4195b10d5267d7b48fc57cb9a50d6d6f48d73439.tar.xz
amd/{hudson,stoneyridge}: fix out of bounds read
southbridge/amd/pi/hudson/imc.c procedure enable_imc_thermal_zone was identified by coverity as having out of bounds access. Copies of the procedure are present in southbridge/amd/agesa/hudson/imc.c and in soc/amd/stoneyridge/imc.c. Fix the procedure in all 3 files. Fixes coverity CID 1260807: Out-of-bounds read. BUG=b:69835834 TEST=Build and platform boot to OS Change-Id: Ic16edc607358b9a688151735e6fcb3393d3bce80 Signed-off-by: Richard Spiegel <richard.spiegel@silverbackltd.com> Reviewed-on: https://review.coreboot.org/22619 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Diffstat (limited to 'src/soc')
-rw-r--r--src/soc/amd/stoneyridge/imc.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/src/soc/amd/stoneyridge/imc.c b/src/soc/amd/stoneyridge/imc.c
index 4c505df522..f7eed205d0 100644
--- a/src/soc/amd/stoneyridge/imc.c
+++ b/src/soc/amd/stoneyridge/imc.c
@@ -50,7 +50,7 @@ void enable_imc_thermal_zone(void)
{
AMD_CONFIG_PARAMS StdHeader;
UINT8 FunNum;
- UINT8 regs[9];
+ UINT8 regs[10];
int i;
regs[0] = 0;
@@ -61,7 +61,7 @@ void enable_imc_thermal_zone(void)
WriteECmsg(MSG_SYS_TO_IMC, AccessWidth8, &FunNum, &StdHeader);
WaitForEcLDN9MailboxCmdAck(&StdHeader);
- for (i = 2 ; i <= 9 ; i++)
+ for (i = 2 ; i < ARRAY_SIZE(regs) ; i++)
ReadECmsg(MSG_REG0 + i, AccessWidth8, &regs[i], &StdHeader);
/* enable thermal zone 0 */
@@ -69,7 +69,7 @@ void enable_imc_thermal_zone(void)
regs[0] = 0;
regs[1] = 0;
FunNum = Fun_81;
- for (i = 0 ; i <= 9 ; i++)
+ for (i = 0 ; i < ARRAY_SIZE(regs) ; i++)
WriteECmsg(MSG_REG0 + i, AccessWidth8, &regs[i], &StdHeader);
WriteECmsg(MSG_SYS_TO_IMC, AccessWidth8, &FunNum, &StdHeader);
WaitForEcLDN9MailboxCmdAck(&StdHeader);