* [PATCH] ath10k: add missing sanity check on diag download
@ 2018-09-21 20:42 ` Brian Norris
0 siblings, 0 replies; 4+ messages in thread
From: Brian Norris @ 2018-09-21 20:42 UTC (permalink / raw)
To: Kalle Valo; +Cc: ath10k, linux-wireless, Carl Huang, Brian Norris
ath10k_hw_diag_fast_download() generally has good boundary checking, but
it misses verifying that the next metadata header actually fits in the
remaining buffer space. Add such a check.
Fixes: 39501ea64116 ("ath10k: download firmware via diag Copy Engine for QCA6174 and QCA9377.")
Signed-off-by: Brian Norris <briannorris@chromium.org>
---
drivers/net/wireless/ath/ath10k/hw.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/net/wireless/ath/ath10k/hw.c b/drivers/net/wireless/ath/ath10k/hw.c
index 2c2870e3e84d..af8ae8117c62 100644
--- a/drivers/net/wireless/ath/ath10k/hw.c
+++ b/drivers/net/wireless/ath/ath10k/hw.c
@@ -1044,6 +1044,12 @@ int ath10k_hw_diag_fast_download(struct ath10k *ar,
left = length - sizeof(*hdr);
while (left > 0) {
+ if (left < sizeof(*metadata)) {
+ ath10k_warn(ar, "firmware segment is truncated: %d\n",
+ left);
+ ret = -EINVAL;
+ break;
+ }
base_addr = __le32_to_cpu(metadata->addr);
base_len = __le32_to_cpu(metadata->length);
buf = metadata->data;
--
2.19.0.444.g18242da7ef-goog
^ permalink raw reply related [flat|nested] 4+ messages in thread
* [PATCH] ath10k: add missing sanity check on diag download
@ 2018-09-21 20:42 ` Brian Norris
0 siblings, 0 replies; 4+ messages in thread
From: Brian Norris @ 2018-09-21 20:42 UTC (permalink / raw)
To: Kalle Valo; +Cc: Brian Norris, Carl Huang, linux-wireless, ath10k
ath10k_hw_diag_fast_download() generally has good boundary checking, but
it misses verifying that the next metadata header actually fits in the
remaining buffer space. Add such a check.
Fixes: 39501ea64116 ("ath10k: download firmware via diag Copy Engine for QCA6174 and QCA9377.")
Signed-off-by: Brian Norris <briannorris@chromium.org>
---
drivers/net/wireless/ath/ath10k/hw.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/net/wireless/ath/ath10k/hw.c b/drivers/net/wireless/ath/ath10k/hw.c
index 2c2870e3e84d..af8ae8117c62 100644
--- a/drivers/net/wireless/ath/ath10k/hw.c
+++ b/drivers/net/wireless/ath/ath10k/hw.c
@@ -1044,6 +1044,12 @@ int ath10k_hw_diag_fast_download(struct ath10k *ar,
left = length - sizeof(*hdr);
while (left > 0) {
+ if (left < sizeof(*metadata)) {
+ ath10k_warn(ar, "firmware segment is truncated: %d\n",
+ left);
+ ret = -EINVAL;
+ break;
+ }
base_addr = __le32_to_cpu(metadata->addr);
base_len = __le32_to_cpu(metadata->length);
buf = metadata->data;
--
2.19.0.444.g18242da7ef-goog
_______________________________________________
ath10k mailing list
ath10k@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/ath10k
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH] ath10k: add missing sanity check on diag download
2018-09-21 20:42 ` Brian Norris
(?)
@ 2018-10-02 4:50 ` Kalle Valo
-1 siblings, 0 replies; 4+ messages in thread
From: Kalle Valo @ 2018-10-02 4:50 UTC (permalink / raw)
To: Brian Norris; +Cc: ath10k, linux-wireless, Carl Huang, Brian Norris
Brian Norris <briannorris@chromium.org> wrote:
> ath10k_hw_diag_fast_download() generally has good boundary checking, but
> it misses verifying that the next metadata header actually fits in the
> remaining buffer space. Add such a check.
>
> Fixes: 39501ea64116 ("ath10k: download firmware via diag Copy Engine for QCA6174 and QCA9377.")
> Signed-off-by: Brian Norris <briannorris@chromium.org>
> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Patch applied to ath-next branch of ath.git, thanks.
e720ba1dcc33 ath10k: add missing sanity check on diag download
--
https://patchwork.kernel.org/patch/10610975/
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] ath10k: add missing sanity check on diag download
2018-09-21 20:42 ` Brian Norris
(?)
(?)
@ 2018-10-02 4:50 ` Kalle Valo
-1 siblings, 0 replies; 4+ messages in thread
From: Kalle Valo @ 2018-10-02 4:50 UTC (permalink / raw)
To: Brian Norris; +Cc: Carl Huang, linux-wireless, ath10k
Brian Norris <briannorris@chromium.org> wrote:
> ath10k_hw_diag_fast_download() generally has good boundary checking, but
> it misses verifying that the next metadata header actually fits in the
> remaining buffer space. Add such a check.
>
> Fixes: 39501ea64116 ("ath10k: download firmware via diag Copy Engine for QCA6174 and QCA9377.")
> Signed-off-by: Brian Norris <briannorris@chromium.org>
> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Patch applied to ath-next branch of ath.git, thanks.
e720ba1dcc33 ath10k: add missing sanity check on diag download
--
https://patchwork.kernel.org/patch/10610975/
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
_______________________________________________
ath10k mailing list
ath10k@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/ath10k
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2018-10-02 4:50 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2018-09-21 20:42 [PATCH] ath10k: add missing sanity check on diag download Brian Norris
2018-09-21 20:42 ` Brian Norris
2018-10-02 4:50 ` Kalle Valo
2018-10-02 4:50 ` Kalle Valo
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