- Linux-stable-mirror - lists.linaro.org

[Linux-stable-mirror] [PATCH] ASoC: wm_adsp: Fix validation of firmware and coeff lengths

by Ben Hutchings

The checks for whether another region/block header could be present are subtracting the size from the current offset. Obviously we should instead subtract the offset from the size. The checks for whether the region/block data fit in the file are adding the data size to the current offset and header size, without checking for integer overflow. Rearrange these so that overflow is impossible. Cc: stable(a)vger.kernel.org Signed-off-by: Ben Hutchings <ben.hutchings(a)codethink.co.uk> --- sound/soc/codecs/wm_adsp.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/sound/soc/codecs/wm_adsp.c b/sound/soc/codecs/wm_adsp.c index 65c059b5ffd7..66e32f5d2917 100644 --- a/sound/soc/codecs/wm_adsp.c +++ b/sound/soc/codecs/wm_adsp.c @@ -1733,7 +1733,7 @@ static int wm_adsp_load(struct wm_adsp *dsp) le64_to_cpu(footer->timestamp)); while (pos < firmware->size && - pos - firmware->size > sizeof(*region)) { + sizeof(*region) < firmware->size - pos) { region = (void *)&(firmware->data[pos]); region_name = "Unknown"; reg = 0; @@ -1782,8 +1782,8 @@ static int wm_adsp_load(struct wm_adsp *dsp) regions, le32_to_cpu(region->len), offset, region_name); - if ((pos + le32_to_cpu(region->len) + sizeof(*region)) > - firmware->size) { + if (le32_to_cpu(region->len) > + firmware->size - pos - sizeof(*region)) { adsp_err(dsp, "%s.%d: %s region len %d bytes exceeds file length %zu\n", file, regions, region_name, @@ -2253,7 +2253,7 @@ static int wm_adsp_load_coeff(struct wm_adsp *dsp) blocks = 0; while (pos < firmware->size && - pos - firmware->size > sizeof(*blk)) { + sizeof(*blk) < firmware->size - pos) { blk = (void *)(&firmware->data[pos]); type = le16_to_cpu(blk->type); @@ -2327,8 +2327,8 @@ static int wm_adsp_load_coeff(struct wm_adsp *dsp) } if (reg) { - if ((pos + le32_to_cpu(blk->len) + sizeof(*blk)) > - firmware->size) { + if (le32_to_cpu(blk->len) > + firmware->size - pos - sizeof(*blk)) { adsp_err(dsp, "%s.%d: %s region len %d bytes exceeds file length %zu\n", file, blocks, region_name, -- 2.15.0.rc0

7 years, 6 months

3
2
0 0

Re: [Linux-stable-mirror] [PATCH AUTOSEL for 4.14 012/135] ASoC: cs42l56: Fix reset GPIO name in example DT binding

by Andrew F. Davis

On 12/08/2017 05:36 AM, Mark Brown wrote: > On Thu, Dec 07, 2017 at 09:03:01PM +0000, alexander.levin(a)verizon.com wrote: >> On Thu, Dec 07, 2017 at 05:25:02PM +0000, Mark Brown wrote: > >>> We shouldn't be getting into adding completely new DT properties in >>> stable backports like this. Old kernels have the bindings they have. > >> I thought that this one just adjust the example to match the code, and >> doesn't actually change anything? > > No, there's a corresponding code change - the changelog is badly written. > Not this patch, this one was just the example was wrong, the driver looks for, and always did look for, the "cirrus,gpio-nreset". Only the tlv* drivers looked for the other property and needed code changing, and those are separate patches.

7 years, 6 months

1
0
0 0

[Linux-stable-mirror] patch "usbip: prevent vhci_hcd driver from leaking a socket pointer address" added to usb-linus

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled usbip: prevent vhci_hcd driver from leaking a socket pointer address to my usb git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git in the usb-linus branch. The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.) The patch will hopefully also be merged in Linus's tree for the next -rc kernel release. If you have any questions about this process, please let me know. >From 2f2d0088eb93db5c649d2a5e34a3800a8a935fc5 Mon Sep 17 00:00:00 2001 From: Shuah Khan <shuahkh(a)osg.samsung.com> Date: Thu, 7 Dec 2017 14:16:49 -0700 Subject: usbip: prevent vhci_hcd driver from leaking a socket pointer address When a client has a USB device attached over IP, the vhci_hcd driver is locally leaking a socket pointer address via the /sys/devices/platform/vhci_hcd/status file (world-readable) and in debug output when "usbip --debug port" is run. Fix it to not leak. The socket pointer address is not used at the moment and it was made visible as a convenient way to find IP address from socket pointer address by looking up /proc/net/{tcp,tcp6}. As this opens a security hole, the fix replaces socket pointer address with sockfd. Reported-by: Secunia Research <vuln(a)secunia.com> Cc: stable <stable(a)vger.kernel.org> Signed-off-by: Shuah Khan <shuahkh(a)osg.samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/usb/usbip/usbip_common.h | 1 + drivers/usb/usbip/vhci_sysfs.c | 25 ++++++++++++++++--------- tools/usb/usbip/libsrc/vhci_driver.c | 8 ++++---- 3 files changed, 21 insertions(+), 13 deletions(-) diff --git a/drivers/usb/usbip/usbip_common.h b/drivers/usb/usbip/usbip_common.h index e5de35c8c505..473fb8a87289 100644 --- a/drivers/usb/usbip/usbip_common.h +++ b/drivers/usb/usbip/usbip_common.h @@ -256,6 +256,7 @@ struct usbip_device { /* lock for status */ spinlock_t lock; + int sockfd; struct socket *tcp_socket; struct task_struct *tcp_rx; diff --git a/drivers/usb/usbip/vhci_sysfs.c b/drivers/usb/usbip/vhci_sysfs.c index e78f7472cac4..091f76b7196d 100644 --- a/drivers/usb/usbip/vhci_sysfs.c +++ b/drivers/usb/usbip/vhci_sysfs.c @@ -17,15 +17,20 @@ /* * output example: - * hub port sta spd dev socket local_busid - * hs 0000 004 000 00000000 c5a7bb80 1-2.3 + * hub port sta spd dev sockfd local_busid + * hs 0000 004 000 00000000 3 1-2.3 * ................................................ - * ss 0008 004 000 00000000 d8cee980 2-3.4 + * ss 0008 004 000 00000000 4 2-3.4 * ................................................ * - * IP address can be retrieved from a socket pointer address by looking - * up /proc/net/{tcp,tcp6}. Also, a userland program may remember a - * port number and its peer IP address. + * Output includes socket fd instead of socket pointer address to avoid + * leaking kernel memory address in: + * /sys/devices/platform/vhci_hcd.0/status and in debug output. + * The socket pointer address is not used at the moment and it was made + * visible as a convenient way to find IP address from socket pointer + * address by looking up /proc/net/{tcp,tcp6}. As this opens a security + * hole, the change is made to use sockfd instead. + * */ static void port_show_vhci(char **out, int hub, int port, struct vhci_device *vdev) { @@ -39,8 +44,8 @@ static void port_show_vhci(char **out, int hub, int port, struct vhci_device *vd if (vdev->ud.status == VDEV_ST_USED) { *out += sprintf(*out, "%03u %08x ", vdev->speed, vdev->devid); - *out += sprintf(*out, "%16p %s", - vdev->ud.tcp_socket, + *out += sprintf(*out, "%u %s", + vdev->ud.sockfd, dev_name(&vdev->udev->dev)); } else { @@ -160,7 +165,8 @@ static ssize_t nports_show(struct device *dev, struct device_attribute *attr, char *s = out; /* - * Half the ports are for SPEED_HIGH and half for SPEED_SUPER, thus the * 2. + * Half the ports are for SPEED_HIGH and half for SPEED_SUPER, + * thus the * 2. */ out += sprintf(out, "%d\n", VHCI_PORTS * vhci_num_controllers); return out - s; @@ -366,6 +372,7 @@ static ssize_t store_attach(struct device *dev, struct device_attribute *attr, vdev->devid = devid; vdev->speed = speed; + vdev->ud.sockfd = sockfd; vdev->ud.tcp_socket = socket; vdev->ud.status = VDEV_ST_NOTASSIGNED; diff --git a/tools/usb/usbip/libsrc/vhci_driver.c b/tools/usb/usbip/libsrc/vhci_driver.c index 627d1dfc332b..c9c81614a66a 100644 --- a/tools/usb/usbip/libsrc/vhci_driver.c +++ b/tools/usb/usbip/libsrc/vhci_driver.c @@ -50,14 +50,14 @@ static int parse_status(const char *value) while (*c != '\0') { int port, status, speed, devid; - unsigned long socket; + int sockfd; char lbusid[SYSFS_BUS_ID_SIZE]; struct usbip_imported_device *idev; char hub[3]; - ret = sscanf(c, "%2s %d %d %d %x %lx %31s\n", + ret = sscanf(c, "%2s %d %d %d %x %u %31s\n", hub, &port, &status, &speed, - &devid, &socket, lbusid); + &devid, &sockfd, lbusid); if (ret < 5) { dbg("sscanf failed: %d", ret); @@ -66,7 +66,7 @@ static int parse_status(const char *value) dbg("hub %s port %d status %d speed %d devid %x", hub, port, status, speed, devid); - dbg("socket %lx lbusid %s", socket, lbusid); + dbg("sockfd %u lbusid %s", sockfd, lbusid); /* if a device is connected, look at it */ idev = &vhci_driver->idev[port]; -- 2.15.1

7 years, 6 months

1
0
0 0

[Linux-stable-mirror] patch "usbip: fix stub_send_ret_submit() vulnerability to null" added to usb-linus

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled usbip: fix stub_send_ret_submit() vulnerability to null to my usb git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git in the usb-linus branch. The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.) The patch will hopefully also be merged in Linus's tree for the next -rc kernel release. If you have any questions about this process, please let me know. >From be6123df1ea8f01ee2f896a16c2b7be3e4557a5a Mon Sep 17 00:00:00 2001 From: Shuah Khan <shuahkh(a)osg.samsung.com> Date: Thu, 7 Dec 2017 14:16:50 -0700 Subject: usbip: fix stub_send_ret_submit() vulnerability to null transfer_buffer stub_send_ret_submit() handles urb with a potential null transfer_buffer, when it replays a packet with potential malicious data that could contain a null buffer. Add a check for the condition when actual_length > 0 and transfer_buffer is null. Reported-by: Secunia Research <vuln(a)secunia.com> Cc: stable <stable(a)vger.kernel.org> Signed-off-by: Shuah Khan <shuahkh(a)osg.samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/usb/usbip/stub_tx.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/usb/usbip/stub_tx.c b/drivers/usb/usbip/stub_tx.c index b18bce96c212..53172b1f6257 100644 --- a/drivers/usb/usbip/stub_tx.c +++ b/drivers/usb/usbip/stub_tx.c @@ -167,6 +167,13 @@ static int stub_send_ret_submit(struct stub_device *sdev) memset(&pdu_header, 0, sizeof(pdu_header)); memset(&msg, 0, sizeof(msg)); + if (urb->actual_length > 0 && !urb->transfer_buffer) { + dev_err(&sdev->udev->dev, + "urb: actual_length %d transfer_buffer null\n", + urb->actual_length); + return -1; + } + if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) iovnum = 2 + urb->number_of_packets; else -- 2.15.1

7 years, 6 months

1
0
0 0

[Linux-stable-mirror] patch "usbip: fix stub_rx: harden CMD_SUBMIT path to handle malicious input" added to usb-linus

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled usbip: fix stub_rx: harden CMD_SUBMIT path to handle malicious input to my usb git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git in the usb-linus branch. The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.) The patch will hopefully also be merged in Linus's tree for the next -rc kernel release. If you have any questions about this process, please let me know. >From c6688ef9f29762e65bce325ef4acd6c675806366 Mon Sep 17 00:00:00 2001 From: Shuah Khan <shuahkh(a)osg.samsung.com> Date: Thu, 7 Dec 2017 14:16:48 -0700 Subject: usbip: fix stub_rx: harden CMD_SUBMIT path to handle malicious input Harden CMD_SUBMIT path to handle malicious input that could trigger large memory allocations. Add checks to validate transfer_buffer_length and number_of_packets to protect against bad input requesting for unbounded memory allocations. Validate early in get_pipe() and return failure. Reported-by: Secunia Research <vuln(a)secunia.com> Cc: stable <stable(a)vger.kernel.org> Signed-off-by: Shuah Khan <shuahkh(a)osg.samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/usb/usbip/stub_rx.c | 35 +++++++++++++++++++++++++++++++---- 1 file changed, 31 insertions(+), 4 deletions(-) diff --git a/drivers/usb/usbip/stub_rx.c b/drivers/usb/usbip/stub_rx.c index 4d61063c259d..493ac2928391 100644 --- a/drivers/usb/usbip/stub_rx.c +++ b/drivers/usb/usbip/stub_rx.c @@ -322,11 +322,13 @@ static struct stub_priv *stub_priv_alloc(struct stub_device *sdev, return priv; } -static int get_pipe(struct stub_device *sdev, int epnum, int dir) +static int get_pipe(struct stub_device *sdev, struct usbip_header *pdu) { struct usb_device *udev = sdev->udev; struct usb_host_endpoint *ep; struct usb_endpoint_descriptor *epd = NULL; + int epnum = pdu->base.ep; + int dir = pdu->base.direction; if (epnum < 0 || epnum > 15) goto err_ret; @@ -339,6 +341,15 @@ static int get_pipe(struct stub_device *sdev, int epnum, int dir) goto err_ret; epd = &ep->desc; + + /* validate transfer_buffer_length */ + if (pdu->u.cmd_submit.transfer_buffer_length > INT_MAX) { + dev_err(&sdev->udev->dev, + "CMD_SUBMIT: -EMSGSIZE transfer_buffer_length %d\n", + pdu->u.cmd_submit.transfer_buffer_length); + return -1; + } + if (usb_endpoint_xfer_control(epd)) { if (dir == USBIP_DIR_OUT) return usb_sndctrlpipe(udev, epnum); @@ -361,6 +372,21 @@ static int get_pipe(struct stub_device *sdev, int epnum, int dir) } if (usb_endpoint_xfer_isoc(epd)) { + /* validate packet size and number of packets */ + unsigned int maxp, packets, bytes; + + maxp = usb_endpoint_maxp(epd); + maxp *= usb_endpoint_maxp_mult(epd); + bytes = pdu->u.cmd_submit.transfer_buffer_length; + packets = DIV_ROUND_UP(bytes, maxp); + + if (pdu->u.cmd_submit.number_of_packets < 0 || + pdu->u.cmd_submit.number_of_packets > packets) { + dev_err(&sdev->udev->dev, + "CMD_SUBMIT: isoc invalid num packets %d\n", + pdu->u.cmd_submit.number_of_packets); + return -1; + } if (dir == USBIP_DIR_OUT) return usb_sndisocpipe(udev, epnum); else @@ -369,7 +395,7 @@ static int get_pipe(struct stub_device *sdev, int epnum, int dir) err_ret: /* NOT REACHED */ - dev_err(&sdev->udev->dev, "get pipe() invalid epnum %d\n", epnum); + dev_err(&sdev->udev->dev, "CMD_SUBMIT: invalid epnum %d\n", epnum); return -1; } @@ -434,7 +460,7 @@ static void stub_recv_cmd_submit(struct stub_device *sdev, struct stub_priv *priv; struct usbip_device *ud = &sdev->ud; struct usb_device *udev = sdev->udev; - int pipe = get_pipe(sdev, pdu->base.ep, pdu->base.direction); + int pipe = get_pipe(sdev, pdu); if (pipe == -1) return; @@ -456,7 +482,8 @@ static void stub_recv_cmd_submit(struct stub_device *sdev, } /* allocate urb transfer buffer, if needed */ - if (pdu->u.cmd_submit.transfer_buffer_length > 0) { + if (pdu->u.cmd_submit.transfer_buffer_length > 0 && + pdu->u.cmd_submit.transfer_buffer_length <= INT_MAX) { priv->urb->transfer_buffer = kzalloc(pdu->u.cmd_submit.transfer_buffer_length, GFP_KERNEL); -- 2.15.1

7 years, 6 months

1
0
0 0

[Linux-stable-mirror] patch "usbip: fix stub_rx: get_pipe() to validate endpoint number" added to usb-linus

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled usbip: fix stub_rx: get_pipe() to validate endpoint number to my usb git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git in the usb-linus branch. The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.) The patch will hopefully also be merged in Linus's tree for the next -rc kernel release. If you have any questions about this process, please let me know. >From 635f545a7e8be7596b9b2b6a43cab6bbd5a88e43 Mon Sep 17 00:00:00 2001 From: Shuah Khan <shuahkh(a)osg.samsung.com> Date: Thu, 7 Dec 2017 14:16:47 -0700 Subject: usbip: fix stub_rx: get_pipe() to validate endpoint number get_pipe() routine doesn't validate the input endpoint number and uses to reference ep_in and ep_out arrays. Invalid endpoint number can trigger BUG(). Range check the epnum and returning error instead of calling BUG(). Change caller stub_recv_cmd_submit() to handle the get_pipe() error return. Reported-by: Secunia Research <vuln(a)secunia.com> Cc: stable <stable(a)vger.kernel.org> Signed-off-by: Shuah Khan <shuahkh(a)osg.samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/usb/usbip/stub_rx.c | 18 +++++++++++------- 1 file changed, 11 insertions(+), 7 deletions(-) diff --git a/drivers/usb/usbip/stub_rx.c b/drivers/usb/usbip/stub_rx.c index 536e037f541f..4d61063c259d 100644 --- a/drivers/usb/usbip/stub_rx.c +++ b/drivers/usb/usbip/stub_rx.c @@ -328,15 +328,15 @@ static int get_pipe(struct stub_device *sdev, int epnum, int dir) struct usb_host_endpoint *ep; struct usb_endpoint_descriptor *epd = NULL; + if (epnum < 0 || epnum > 15) + goto err_ret; + if (dir == USBIP_DIR_IN) ep = udev->ep_in[epnum & 0x7f]; else ep = udev->ep_out[epnum & 0x7f]; - if (!ep) { - dev_err(&sdev->udev->dev, "no such endpoint?, %d\n", - epnum); - BUG(); - } + if (!ep) + goto err_ret; epd = &ep->desc; if (usb_endpoint_xfer_control(epd)) { @@ -367,9 +367,10 @@ static int get_pipe(struct stub_device *sdev, int epnum, int dir) return usb_rcvisocpipe(udev, epnum); } +err_ret: /* NOT REACHED */ - dev_err(&sdev->udev->dev, "get pipe, epnum %d\n", epnum); - return 0; + dev_err(&sdev->udev->dev, "get pipe() invalid epnum %d\n", epnum); + return -1; } static void masking_bogus_flags(struct urb *urb) @@ -435,6 +436,9 @@ static void stub_recv_cmd_submit(struct stub_device *sdev, struct usb_device *udev = sdev->udev; int pipe = get_pipe(sdev, pdu->base.ep, pdu->base.direction); + if (pipe == -1) + return; + priv = stub_priv_alloc(sdev, pdu); if (!priv) return; -- 2.15.1

7 years, 6 months

1
0
0 0

[Linux-stable-mirror] patch "USB: uas and storage: Add US_FL_BROKEN_FUA for another JMicron JMS567" added to usb-linus

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled USB: uas and storage: Add US_FL_BROKEN_FUA for another JMicron JMS567 to my usb git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git in the usb-linus branch. The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.) The patch will hopefully also be merged in Linus's tree for the next -rc kernel release. If you have any questions about this process, please let me know. >From 62354454625741f0569c2cbe45b2d192f8fd258e Mon Sep 17 00:00:00 2001 From: David Kozub <zub(a)linux.fjfi.cvut.cz> Date: Tue, 5 Dec 2017 22:40:04 +0100 Subject: USB: uas and storage: Add US_FL_BROKEN_FUA for another JMicron JMS567 ID There is another JMS567-based USB3 UAS enclosure (152d:0578) that fails with the following error: [sda] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [sda] tag#0 Sense Key : Illegal Request [current] [sda] tag#0 Add. Sense: Invalid field in cdb The issue occurs both with UAS (occasionally) and mass storage (immediately after mounting a FS on a disk in the enclosure). Enabling US_FL_BROKEN_FUA quirk solves this issue. This patch adds an UNUSUAL_DEV with US_FL_BROKEN_FUA for the enclosure for both UAS and mass storage. Signed-off-by: David Kozub <zub(a)linux.fjfi.cvut.cz> Acked-by: Alan Stern <stern(a)rowland.harvard.edu> Cc: stable <stable(a)vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/usb/storage/unusual_devs.h | 7 +++++++ drivers/usb/storage/unusual_uas.h | 7 +++++++ 2 files changed, 14 insertions(+) diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h index 2968046e7c05..f72d045ee9ef 100644 --- a/drivers/usb/storage/unusual_devs.h +++ b/drivers/usb/storage/unusual_devs.h @@ -2100,6 +2100,13 @@ UNUSUAL_DEV( 0x152d, 0x0567, 0x0114, 0x0116, USB_SC_DEVICE, USB_PR_DEVICE, NULL, US_FL_BROKEN_FUA ), +/* Reported by David Kozub <zub(a)linux.fjfi.cvut.cz> */ +UNUSUAL_DEV(0x152d, 0x0578, 0x0000, 0x9999, + "JMicron", + "JMS567", + USB_SC_DEVICE, USB_PR_DEVICE, NULL, + US_FL_BROKEN_FUA), + /* * Reported by Alexandre Oliva <oliva(a)lsd.ic.unicamp.br> * JMicron responds to USN and several other SCSI ioctls with a diff --git a/drivers/usb/storage/unusual_uas.h b/drivers/usb/storage/unusual_uas.h index d520374a824e..e6127fb21c12 100644 --- a/drivers/usb/storage/unusual_uas.h +++ b/drivers/usb/storage/unusual_uas.h @@ -129,6 +129,13 @@ UNUSUAL_DEV(0x152d, 0x0567, 0x0000, 0x9999, USB_SC_DEVICE, USB_PR_DEVICE, NULL, US_FL_BROKEN_FUA | US_FL_NO_REPORT_OPCODES), +/* Reported-by: David Kozub <zub(a)linux.fjfi.cvut.cz> */ +UNUSUAL_DEV(0x152d, 0x0578, 0x0000, 0x9999, + "JMicron", + "JMS567", + USB_SC_DEVICE, USB_PR_DEVICE, NULL, + US_FL_BROKEN_FUA), + /* Reported-by: Hans de Goede <hdegoede(a)redhat.com> */ UNUSUAL_DEV(0x2109, 0x0711, 0x0000, 0x9999, "VIA", -- 2.15.1

7 years, 6 months

1
0
0 0

[Linux-stable-mirror] [PATCH RESEND] ASoC: wm_adsp: Fix validation of firmware and coeff lengths

by Ben Hutchings

The checks for whether another region/block header could be present are subtracting the size from the current offset. Obviously we should instead subtract the offset from the size. The checks for whether the region/block data fit in the file are adding the data size to the current offset and header size, without checking for integer overflow. Rearrange these so that overflow is impossible. Cc: stable(a)vger.kernel.org Signed-off-by: Ben Hutchings <ben.hutchings(a)codethink.co.uk> Acked-by: Charles Keepax <ckeepax(a)opensource.cirrus.com> Tested-by: Charles Keepax <ckeepax(a)opensource.cirrus.com> --- sound/soc/codecs/wm_adsp.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/sound/soc/codecs/wm_adsp.c b/sound/soc/codecs/wm_adsp.c index 65c059b5ffd7..66e32f5d2917 100644 --- a/sound/soc/codecs/wm_adsp.c +++ b/sound/soc/codecs/wm_adsp.c @@ -1733,7 +1733,7 @@ static int wm_adsp_load(struct wm_adsp *dsp) le64_to_cpu(footer->timestamp)); while (pos < firmware->size && - pos - firmware->size > sizeof(*region)) { + sizeof(*region) < firmware->size - pos) { region = (void *)&(firmware->data[pos]); region_name = "Unknown"; reg = 0; @@ -1782,8 +1782,8 @@ static int wm_adsp_load(struct wm_adsp *dsp) regions, le32_to_cpu(region->len), offset, region_name); - if ((pos + le32_to_cpu(region->len) + sizeof(*region)) > - firmware->size) { + if (le32_to_cpu(region->len) > + firmware->size - pos - sizeof(*region)) { adsp_err(dsp, "%s.%d: %s region len %d bytes exceeds file length %zu\n", file, regions, region_name, @@ -2253,7 +2253,7 @@ static int wm_adsp_load_coeff(struct wm_adsp *dsp) blocks = 0; while (pos < firmware->size && - pos - firmware->size > sizeof(*blk)) { + sizeof(*blk) < firmware->size - pos) { blk = (void *)(&firmware->data[pos]); type = le16_to_cpu(blk->type); @@ -2327,8 +2327,8 @@ static int wm_adsp_load_coeff(struct wm_adsp *dsp) } if (reg) { - if ((pos + le32_to_cpu(blk->len) + sizeof(*blk)) > - firmware->size) { + if (le32_to_cpu(blk->len) > + firmware->size - pos - sizeof(*blk)) { adsp_err(dsp, "%s.%d: %s region len %d bytes exceeds file length %zu\n", file, blocks, region_name, -- 2.15.0.rc0

7 years, 6 months

1
0
0 0

[Linux-stable-mirror] [PATCH 2/2] usb: xhci: fix TDS for MTK xHCI1.1

by Mathias Nyman

From: Chunfeng Yun <chunfeng.yun(a)mediatek.com> For MTK's xHCI 1.0 or latter, TD size is the number of max packet sized packets remaining in the TD, not including this TRB (following spec). For MTK's xHCI 0.96 and older, TD size is the number of max packet sized packets remaining in the TD, including this TRB (not following spec). Cc: stable <stable(a)vger.kernel.org> Signed-off-by: Chunfeng Yun <chunfeng.yun(a)mediatek.com> Signed-off-by: Mathias Nyman <mathias.nyman(a)linux.intel.com> --- drivers/usb/host/xhci-ring.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 6eb87c6..c5cbc68 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -3112,7 +3112,7 @@ static u32 xhci_td_remainder(struct xhci_hcd *xhci, int transferred, { u32 maxp, total_packet_count; - /* MTK xHCI is mostly 0.97 but contains some features from 1.0 */ + /* MTK xHCI 0.96 contains some features from 1.0 */ if (xhci->hci_version < 0x100 && !(xhci->quirks & XHCI_MTK_HOST)) return ((td_total_len - transferred) >> 10); @@ -3121,8 +3121,8 @@ static u32 xhci_td_remainder(struct xhci_hcd *xhci, int transferred, trb_buff_len == td_total_len) return 0; - /* for MTK xHCI, TD size doesn't include this TRB */ - if (xhci->quirks & XHCI_MTK_HOST) + /* for MTK xHCI 0.96, TD size include this TRB, but not in 1.x */ + if ((xhci->quirks & XHCI_MTK_HOST) && (xhci->hci_version < 0x100)) trb_buff_len = 0; maxp = usb_endpoint_maxp(&urb->ep->desc); -- 2.7.4

7 years, 6 months

1
0
0 0

[Linux-stable-mirror] [PATCH 1/2] xhci: Don't add a virt_dev to the devs array before it's fully allocated

by Mathias Nyman

Avoid null pointer dereference if some function is walking through the devs array accessing members of a new virt_dev that is mid allocation. Add the virt_dev to xhci->devs[i] _after_ the virt_device and all its members are properly allocated. issue found by KASAN: null-ptr-deref in xhci_find_slot_id_by_port "Quick analysis suggests that xhci_alloc_virt_device() is not mutex protected. If so, there is a time frame where xhci->devs[slot_id] is set but not fully initialized. Specifically, xhci->devs[i]->udev can be NULL." Cc: stable <stable(a)vger.kernel.org> Signed-off-by: Mathias Nyman <mathias.nyman(a)linux.intel.com> --- drivers/usb/host/xhci-mem.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index 15f7d42..3a29b32 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -971,10 +971,9 @@ int xhci_alloc_virt_device(struct xhci_hcd *xhci, int slot_id, return 0; } - xhci->devs[slot_id] = kzalloc(sizeof(*xhci->devs[slot_id]), flags); - if (!xhci->devs[slot_id]) + dev = kzalloc(sizeof(*dev), flags); + if (!dev) return 0; - dev = xhci->devs[slot_id]; /* Allocate the (output) device context that will be used in the HC. */ dev->out_ctx = xhci_alloc_container_ctx(xhci, XHCI_CTX_TYPE_DEVICE, flags); @@ -1015,9 +1014,17 @@ int xhci_alloc_virt_device(struct xhci_hcd *xhci, int slot_id, trace_xhci_alloc_virt_device(dev); + xhci->devs[slot_id] = dev; + return 1; fail: - xhci_free_virt_device(xhci, slot_id); + + if (dev->in_ctx) + xhci_free_container_ctx(xhci, dev->in_ctx); + if (dev->out_ctx) + xhci_free_container_ctx(xhci, dev->out_ctx); + kfree(dev); + return 0; } -- 2.7.4

7 years, 6 months

1
0
0 0

2025

2024

2023

2022

2021

2020

2019

2018

2017

Linux-stable-mirror