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[BlueZ,2/7] tools: Fix buffer overflow in hciattach_tialt.c

Message ID 20220401102757.3960551-3-i.kamaletdinov@omp.ru
State Superseded
Headers show
Series v2 Fix bugs found by SVACE static analisys tool | expand

Commit Message

Ildar Kamaletdinov April 1, 2022, 10:27 a.m. UTC 
Array 'c_brf_chip' of size 8 could be accessed by index > 7. We should
limit array access like in previous check at line 221.

Found by Linux Verification Center (linuxtesting.org) with the SVACE
static analysis tool.
---
 tools/hciattach_tialt.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
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Patch

diff --git a/tools/hciattach_tialt.c b/tools/hciattach_tialt.c
index 520b383a1..4f7fd42a3 100644
--- a/tools/hciattach_tialt.c
+++ b/tools/hciattach_tialt.c
@@ -221,7 +221,8 @@  int texasalt_init(int fd, int speed, struct termios *ti)
 				((brf_chip > 7) ? "unknown" : c_brf_chip[brf_chip]),
 				brf_chip);
 
-		sprintf(fw, "/etc/firmware/%s.bin", c_brf_chip[brf_chip]);
+		sprintf(fw, "/etc/firmware/%s.bin",
+			(brf_chip > 7) ? "unknown" : c_brf_chip[brf_chip]);
 		texas_load_firmware(fd, fw);
 
 		texas_change_speed(fd, speed);