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D60937.1793468280.diff
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D60937.1793468280.diff
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Index: sys/kern/link_elf_obj.c
===================================================================
--- sys/kern/link_elf_obj.c
+++ sys/kern/link_elf_obj.c
@@ -397,6 +397,14 @@
symtabindex = -1;
symstrindex = -1;
for (i = 0; i < hdr->e_shnum; i++) {
+ if ((shdr[i].sh_type == SHT_REL ||
+ shdr[i].sh_type == SHT_RELA) &&
+ shdr[i].sh_info >= hdr->e_shnum) {
+ link_elf_error(filename,
+ "file has an invalid relocation section");
+ error = ENOEXEC;
+ goto out;
+ }
switch (shdr[i].sh_type) {
case SHT_PROGBITS:
case SHT_NOBITS:
@@ -836,6 +844,14 @@
for (i = 0; i < hdr->e_shnum; i++) {
if (shdr[i].sh_size == 0)
continue;
+ if ((shdr[i].sh_type == SHT_REL ||
+ shdr[i].sh_type == SHT_RELA) &&
+ shdr[i].sh_info >= hdr->e_shnum) {
+ link_elf_error(filename,
+ "file has an invalid relocation section");
+ error = ENOEXEC;
+ goto out;
+ }
switch (shdr[i].sh_type) {
case SHT_PROGBITS:
case SHT_NOBITS:

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