diff --git a/linker/linker.cpp b/linker/linker.cpp
index ab0fc0762a03ad44d72f77ac818f629c42dd205a..b2911b8cef98730f33a718e8821378c30c94f4ea 100644 (file)
--- a/linker/linker.cpp
+++ b/linker/linker.cpp
@@ -814,12 +814,20 @@ static soinfo* load_library(LoadTaskList& load_tasks, const char* name, int rtld
DL_ERR("file offset for the library \"%s\" is not page-aligned: %" PRId64, name, file_offset);
return nullptr;
}
+ if (file_offset < 0) {
+ DL_ERR("file offset for the library \"%s\" is negative: %" PRId64, name, file_offset);
+ return nullptr;
+ }
struct stat file_stat;
if (TEMP_FAILURE_RETRY(fstat(fd, &file_stat)) != 0) {
DL_ERR("unable to stat file for the library \"%s\": %s", name, strerror(errno));
return nullptr;
}
+ if (file_offset >= file_stat.st_size) {
+ DL_ERR("file offset for the library \"%s\" >= file size: %" PRId64 " >= %" PRId64, name, file_offset, file_stat.st_size);
+ return nullptr;
+ }
// Check for symlink and other situations where
// file can have different names.