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diff --git a/sys/kern/link_elf.c b/sys/kern/link_elf.c
--- a/sys/kern/link_elf.c
+++ b/sys/kern/link_elf.c
@@ -1110,6 +1110,14 @@
error = ENOEXEC;
goto out;
}
+
+ if (phdr->p_memsz < phdr->p_filesz) {
+ link_elf_error(filename,
+ "Invalid program header");
+ error = ENOEXEC;
+ goto out;
+ }
+
/*
* XXX: We just trust they come in right order ??
*/

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