This is an automatic generated email to let you know that the following patch
were queued:
Subject: drivers: media: dvb-frontends/rtl2830: fix an out-of-bounds write error
Author: Junlin Li <mak...@iscas.ac.cn>
Date: Wed Jul 3 01:50:23 2024 +0800
Ensure index in rtl2830_pid_filter does not exceed 31 to prevent
out-of-bounds access.
dev->filters is a 32-bit value, so set_bit and clear_bit functions should
only operate on indices from 0 to 31. If index is 32, it will attempt to
access a non-existent 33rd bit, leading to out-of-bounds access.
Change the boundary check from index > 32 to index >= 32 to resolve this
issue.
Fixes: df70ddad81b4 ("[media] rtl2830: implement PID filter")
Signed-off-by: Junlin Li <mak...@iscas.ac.cn>
Signed-off-by: Hans Verkuil <hverkuil-ci...@xs4all.nl>
drivers/media/dvb-frontends/rtl2830.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/drivers/media/dvb-frontends/rtl2830.c
b/drivers/media/dvb-frontends/rtl2830.c
index a1e62d49200b..aa4ef9aedf17 100644
--- a/drivers/media/dvb-frontends/rtl2830.c
+++ b/drivers/media/dvb-frontends/rtl2830.c
@@ -609,7 +609,7 @@ static int rtl2830_pid_filter(struct dvb_frontend *fe, u8
index, u16 pid, int on
index, pid, onoff);
/* skip invalid PIDs (0x2000) */
- if (pid > 0x1fff || index > 32)
+ if (pid > 0x1fff || index >= 32)
return 0;
if (onoff)
