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fix: 增强对LOS_ArchCopyToUser接口的安全防护 

Close: #I61CLY

Signed-off-by: zhangdengyu <zhangdengyu2@huawei.com>
Change-Id: I0faf8e5849c24b108f290e483124f3edaf70ef50
This commit is contained in:
zhangdengyu 2022-11-15 16:42:41 +08:00
parent 4d1fd22b1c
commit 07e3feb456
5 changed files with 7 additions and 6 deletions
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2
kernel/base/vm/shm.c
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@ -604,7 +604,7 @@ INT32 ShmCtl(INT32 shmid, INT32 cmd, struct shmid_ds *buf)
{
struct shmIDSource *seg = NULL;
INT32 ret = 0;
struct shm_info shmInfo;
struct shm_info shmInfo = { 0 };
struct ipc_perm shm_perm;
cmd = ((UINT32)cmd & ~IPC_64);

2
syscall/fs_syscall.c
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@ -1520,7 +1520,7 @@ ssize_t SysPread64(int fd, void *buf, size_t nbytes, off64_t offset)
if (bufRet == NULL) {
return -ENOMEM;
}
(void)memset_s(bufRet, nbytes, 0, nbytes);
ret = pread64(fd, (buf ? bufRet : NULL), nbytes, offset);
if (ret < 0) {
(void)LOS_MemFree(OS_SYS_MEM_ADDR, bufRet);

5
syscall/ipc_syscall.c
View File

@ -106,7 +106,8 @@ int SysMqNotify(mqd_t personal, const struct sigevent *sigev)
int SysMqGetSetAttr(mqd_t mqd, const struct mq_attr *new, struct mq_attr *old)
{
int ret;
struct mq_attr knew, kold;
struct mq_attr knew;
struct mq_attr kold = { 0 };
if (new != NULL) {
ret = LOS_ArchCopyFromUser(&knew, new, sizeof(struct mq_attr));
@ -256,7 +257,7 @@ int SysSigTimedWait(const sigset_t_l *setl, siginfo_t *info, const struct timesp
sigset_t set;
unsigned int tick;
int retVal, ret;
siginfo_t infoIntr;
siginfo_t infoIntr = { 0 };
struct timespec timeoutIntr;
retVal = LOS_ArchCopyFromUser(&set, &(setl->sig[0]), sizeof(sigset_t));

2
syscall/misc_syscall.c
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@ -208,7 +208,7 @@ long SysSysconf(int name)
int SysUgetrlimit(int resource, unsigned long long k_rlim[2])
{
int ret;
struct rlimit lim;
struct rlimit lim = { 0 };
ret = getrlimit(resource, &lim);
if (ret < 0) {

2
syscall/process_syscall.c
View File

@ -255,7 +255,7 @@ int SysSchedRRGetInterval(int pid, struct timespec *tp)
int ret;
SchedParam param = { 0 };
time_t timeSlice = 0;
struct timespec tv;
struct timespec tv = { 0 };
LosTaskCB *taskCB = NULL;
LosProcessCB *processCB = NULL;