[PATCH openEuler-1.0-LTS 1/2] USB: gadget: validate interface OS descriptor requests
From: Szymon Heidrich <szymon.heidrich@gmail.com> stable inclusion from linux-4.19.230 commit e5eb8d19aee115d8fb354d1eff1b8df700467164 CVE: CVE-2022-25258 -------------------------------- commit 75e5b4849b81e19e9efe1654b30d7f3151c33c2c upstream. Stall the control endpoint in case provided index exceeds array size of MAX_CONFIG_INTERFACES or when the retrieved function pointer is null. Signed-off-by: Szymon Heidrich <szymon.heidrich@gmail.com> Cc: stable@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Reviewed-by: Wang Weiyang <wangweiyang2@huawei.com> Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> --- drivers/usb/gadget/composite.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index d39ebf5bdbdd5..0f2af1e1e8f4b 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -1865,6 +1865,9 @@ composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) if (w_index != 0x5 || (w_value >> 8)) break; interface = w_value & 0xFF; + if (interface >= MAX_CONFIG_INTERFACES || + !os_desc_cfg->interface[interface]) + break; buf[6] = w_index; count = count_ext_prop(os_desc_cfg, interface); -- 2.25.1
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> stable inclusion from linux-4.19.230 commit 38ea1eac7d88072bbffb630e2b3db83ca649b826 CVE: CVE-2022-25375 -------------------------------- commit 38ea1eac7d88072bbffb630e2b3db83ca649b826 upstream. Check the size of the RNDIS_MSG_SET command given to us before attempting to respond to an invalid message size. Reported-by: Szymon Heidrich <szymon.heidrich@gmail.com> Cc: stable@kernel.org Tested-by: Szymon Heidrich <szymon.heidrich@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Reviewed-by: Wang Weiyang <wangweiyang2@huawei.com> Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> --- drivers/usb/gadget/function/rndis.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/usb/gadget/function/rndis.c b/drivers/usb/gadget/function/rndis.c index 7686b55ccf133..6c6d819e6c2d6 100644 --- a/drivers/usb/gadget/function/rndis.c +++ b/drivers/usb/gadget/function/rndis.c @@ -655,14 +655,17 @@ static int rndis_set_response(struct rndis_params *params, rndis_set_cmplt_type *resp; rndis_resp_t *r; + BufLength = le32_to_cpu(buf->InformationBufferLength); + BufOffset = le32_to_cpu(buf->InformationBufferOffset); + if ((BufLength > RNDIS_MAX_TOTAL_SIZE) || + (BufOffset + 8 >= RNDIS_MAX_TOTAL_SIZE)) + return -EINVAL; + r = rndis_add_response(params, sizeof(rndis_set_cmplt_type)); if (!r) return -ENOMEM; resp = (rndis_set_cmplt_type *)r->buf; - BufLength = le32_to_cpu(buf->InformationBufferLength); - BufOffset = le32_to_cpu(buf->InformationBufferOffset); - #ifdef VERBOSE_DEBUG pr_debug("%s: Length: %d\n", __func__, BufLength); pr_debug("%s: Offset: %d\n", __func__, BufOffset); -- 2.25.1
participants (1)
-
Yang Yingliang