diff options
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/pthread_attr_getaffinity.c')
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/pthread_attr_getaffinity.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/pthread_attr_getaffinity.c b/nptl/sysdeps/unix/sysv/linux/pthread_attr_getaffinity.c index 00bb29b3f5..2a60f8e19f 100644 --- a/nptl/sysdeps/unix/sysv/linux/pthread_attr_getaffinity.c +++ b/nptl/sysdeps/unix/sysv/linux/pthread_attr_getaffinity.c @@ -42,7 +42,12 @@ __pthread_attr_getaffinity_new (const pthread_attr_t *attr, size_t cpusetsize, if (((char *) iattr->cpuset)[cnt] != 0) return EINVAL; - void *p = mempcpy (cpuset, iattr->cpuset, iattr->cpusetsize); + /* Copy over the cpuset from the thread attribute object. Limit the copy + to the minimum of the source and destination sizes to prevent a buffer + overrun. If the destination is larger, fill the remaining space with + zeroes. */ + void *p = mempcpy (cpuset, iattr->cpuset, + MIN (iattr->cpusetsize, cpusetsize)); if (cpusetsize > iattr->cpusetsize) memset (p, '\0', cpusetsize - iattr->cpusetsize); } |