diff options
Diffstat (limited to 'drivers/char')
-rw-r--r-- | drivers/char/applicom.c | 35 | ||||
-rw-r--r-- | drivers/char/ipmi/ipmi_ssif.c | 25 | ||||
-rw-r--r-- | drivers/char/mwave/mwavedd.c | 7 |
3 files changed, 48 insertions, 19 deletions
diff --git a/drivers/char/applicom.c b/drivers/char/applicom.c index 14790304b84b..9fcd51095d13 100644 --- a/drivers/char/applicom.c +++ b/drivers/char/applicom.c @@ -32,6 +32,7 @@ #include <linux/wait.h> #include <linux/init.h> #include <linux/fs.h> +#include <linux/nospec.h> #include <asm/io.h> #include <asm/uaccess.h> @@ -386,7 +387,11 @@ static ssize_t ac_write(struct file *file, const char __user *buf, size_t count, TicCard = st_loc.tic_des_from_pc; /* tic number to send */ IndexCard = NumCard - 1; - if((NumCard < 1) || (NumCard > MAX_BOARD) || !apbs[IndexCard].RamIO) + if (IndexCard >= MAX_BOARD) + return -EINVAL; + IndexCard = array_index_nospec(IndexCard, MAX_BOARD); + + if (!apbs[IndexCard].RamIO) return -EINVAL; #ifdef DEBUG @@ -697,6 +702,7 @@ static long ac_ioctl(struct file *file, unsigned int cmd, unsigned long arg) unsigned char IndexCard; void __iomem *pmem; int ret = 0; + static int warncount = 10; volatile unsigned char byte_reset_it; struct st_ram_io *adgl; void __user *argp = (void __user *)arg; @@ -711,16 +717,12 @@ static long ac_ioctl(struct file *file, unsigned int cmd, unsigned long arg) mutex_lock(&ac_mutex); IndexCard = adgl->num_card-1; - if(cmd != 6 && ((IndexCard >= MAX_BOARD) || !apbs[IndexCard].RamIO)) { - static int warncount = 10; - if (warncount) { - printk( KERN_WARNING "APPLICOM driver IOCTL, bad board number %d\n",(int)IndexCard+1); - warncount--; - } - kfree(adgl); - mutex_unlock(&ac_mutex); - return -EINVAL; - } + if (cmd != 6 && IndexCard >= MAX_BOARD) + goto err; + IndexCard = array_index_nospec(IndexCard, MAX_BOARD); + + if (cmd != 6 && !apbs[IndexCard].RamIO) + goto err; switch (cmd) { @@ -838,5 +840,16 @@ static long ac_ioctl(struct file *file, unsigned int cmd, unsigned long arg) kfree(adgl); mutex_unlock(&ac_mutex); return 0; + +err: + if (warncount) { + pr_warn("APPLICOM driver IOCTL, bad board number %d\n", + (int)IndexCard + 1); + warncount--; + } + kfree(adgl); + mutex_unlock(&ac_mutex); + return -EINVAL; + } diff --git a/drivers/char/ipmi/ipmi_ssif.c b/drivers/char/ipmi/ipmi_ssif.c index 7a2e23d6bfdd..b2da2382d544 100644 --- a/drivers/char/ipmi/ipmi_ssif.c +++ b/drivers/char/ipmi/ipmi_ssif.c @@ -637,8 +637,9 @@ static void msg_done_handler(struct ssif_info *ssif_info, int result, /* Remove the multi-part read marker. */ len -= 2; + data += 2; for (i = 0; i < len; i++) - ssif_info->data[i] = data[i+2]; + ssif_info->data[i] = data[i]; ssif_info->multi_len = len; ssif_info->multi_pos = 1; @@ -666,8 +667,19 @@ static void msg_done_handler(struct ssif_info *ssif_info, int result, } blocknum = data[0]; + len--; + data++; + + if (blocknum != 0xff && len != 31) { + /* All blocks but the last must have 31 data bytes. */ + result = -EIO; + if (ssif_info->ssif_debug & SSIF_DEBUG_MSG) + pr_info("Received middle message <31\n"); - if (ssif_info->multi_len + len - 1 > IPMI_MAX_MSG_LENGTH) { + goto continue_op; + } + + if (ssif_info->multi_len + len > IPMI_MAX_MSG_LENGTH) { /* Received message too big, abort the operation. */ result = -E2BIG; if (ssif_info->ssif_debug & SSIF_DEBUG_MSG) @@ -676,16 +688,14 @@ static void msg_done_handler(struct ssif_info *ssif_info, int result, goto continue_op; } - /* Remove the blocknum from the data. */ - len--; for (i = 0; i < len; i++) - ssif_info->data[i + ssif_info->multi_len] = data[i + 1]; + ssif_info->data[i + ssif_info->multi_len] = data[i]; ssif_info->multi_len += len; if (blocknum == 0xff) { /* End of read */ len = ssif_info->multi_len; data = ssif_info->data; - } else if (blocknum + 1 != ssif_info->multi_pos) { + } else if (blocknum != ssif_info->multi_pos) { /* * Out of sequence block, just abort. Block * numbers start at zero for the second block, @@ -713,6 +723,7 @@ static void msg_done_handler(struct ssif_info *ssif_info, int result, } } + continue_op: if (result < 0) { ssif_inc_stat(ssif_info, receive_errors); } else { @@ -720,8 +731,6 @@ static void msg_done_handler(struct ssif_info *ssif_info, int result, ssif_inc_stat(ssif_info, received_message_parts); } - - continue_op: if (ssif_info->ssif_debug & SSIF_DEBUG_STATE) pr_info(PFX "DONE 1: state = %d, result=%d.\n", ssif_info->ssif_state, result); diff --git a/drivers/char/mwave/mwavedd.c b/drivers/char/mwave/mwavedd.c index 164544afd680..618f3df6c3b9 100644 --- a/drivers/char/mwave/mwavedd.c +++ b/drivers/char/mwave/mwavedd.c @@ -59,6 +59,7 @@ #include <linux/mutex.h> #include <linux/delay.h> #include <linux/serial_8250.h> +#include <linux/nospec.h> #include "smapi.h" #include "mwavedd.h" #include "3780i.h" @@ -289,6 +290,8 @@ static long mwave_ioctl(struct file *file, unsigned int iocmd, ipcnum); return -EINVAL; } + ipcnum = array_index_nospec(ipcnum, + ARRAY_SIZE(pDrvData->IPCs)); PRINTK_3(TRACE_MWAVE, "mwavedd::mwave_ioctl IOCTL_MW_REGISTER_IPC" " ipcnum %x entry usIntCount %x\n", @@ -317,6 +320,8 @@ static long mwave_ioctl(struct file *file, unsigned int iocmd, " Invalid ipcnum %x\n", ipcnum); return -EINVAL; } + ipcnum = array_index_nospec(ipcnum, + ARRAY_SIZE(pDrvData->IPCs)); PRINTK_3(TRACE_MWAVE, "mwavedd::mwave_ioctl IOCTL_MW_GET_IPC" " ipcnum %x, usIntCount %x\n", @@ -383,6 +388,8 @@ static long mwave_ioctl(struct file *file, unsigned int iocmd, ipcnum); return -EINVAL; } + ipcnum = array_index_nospec(ipcnum, + ARRAY_SIZE(pDrvData->IPCs)); mutex_lock(&mwave_mutex); if (pDrvData->IPCs[ipcnum].bIsEnabled == TRUE) { pDrvData->IPCs[ipcnum].bIsEnabled = FALSE; |