mirror of
https://github.com/Divested-Mobile/DivestOS-Build.git
synced 2024-12-12 01:14:22 -05:00
60 lines
1.8 KiB
Diff
60 lines
1.8 KiB
Diff
From 4af032a458109027c88c478c800aac97a7105250 Mon Sep 17 00:00:00 2001
|
|
From: Ram Sripathi <ram.sripathi@broadcom.com>
|
|
Date: Fri, 4 Nov 2016 15:44:14 -0700
|
|
Subject: net: wireless: bcmdhd: Heap over write in dhdmsgbuf_query_ioctl
|
|
|
|
handled heap overwrite with checks
|
|
|
|
Signed-off-by: Ram Sripathi <ram.sripathi@broadcom.com>
|
|
Bug: 31822524
|
|
Change-Id: I9e9bc97a3f410d40d9bc6a44707a6c0f8917cd31
|
|
---
|
|
drivers/net/wireless/bcmdhd/dhd_msgbuf.c | 28 +++++++++++++++-------------
|
|
1 file changed, 15 insertions(+), 13 deletions(-)
|
|
|
|
diff --git a/drivers/net/wireless/bcmdhd/dhd_msgbuf.c b/drivers/net/wireless/bcmdhd/dhd_msgbuf.c
|
|
index 8d7d4bf..e6e2848 100644
|
|
--- a/drivers/net/wireless/bcmdhd/dhd_msgbuf.c
|
|
+++ b/drivers/net/wireless/bcmdhd/dhd_msgbuf.c
|
|
@@ -2493,22 +2493,24 @@ static int
|
|
dhdmsgbuf_query_ioctl(dhd_pub_t *dhd, int ifidx, uint cmd, void *buf, uint len, uint8 action)
|
|
{
|
|
dhd_prot_t *prot = dhd->prot;
|
|
-
|
|
int ret = 0;
|
|
|
|
- DHD_TRACE(("%s: Enter\n", __FUNCTION__));
|
|
-
|
|
- /* Respond "bcmerror" and "bcmerrorstr" with local cache */
|
|
- if (cmd == WLC_GET_VAR && buf)
|
|
- {
|
|
- if (!strcmp((char *)buf, "bcmerrorstr"))
|
|
- {
|
|
- strncpy((char *)buf, bcmerrorstr(dhd->dongle_error), BCME_STRLEN);
|
|
+ DHD_TRACE(("%s: Enter\n", __func__));
|
|
+ if (!buf || !len) {
|
|
+ DHD_ERROR(("%s(): Zero length bailing\n", __func__));
|
|
+ ret = BCME_BADARG;
|
|
+ goto done;
|
|
+ }
|
|
+ if (cmd == WLC_GET_VAR) {
|
|
+ /* Respond "bcmerror" and "bcmerrorstr" with local cache */
|
|
+ if ((len > strlen("bcmerrorstr")) &&
|
|
+ !strcmp(buf, "bcmerrorstr")) {
|
|
+ strlcpy(buf, bcmerrorstr(dhd->dongle_error), len);
|
|
goto done;
|
|
- }
|
|
- else if (!strcmp((char *)buf, "bcmerror"))
|
|
- {
|
|
- *(int *)buf = dhd->dongle_error;
|
|
+ } else if ((len > strlen("bcmerror")) &&
|
|
+ !strcmp(buf, "bcmerror")) {
|
|
+ memcpy(buf, &dhd->dongle_error,
|
|
+ sizeof(dhd->dongle_error));
|
|
goto done;
|
|
}
|
|
}
|
|
--
|
|
cgit v1.1
|
|
|