lib/elf: Validate dt_pltrelsz is a multiple of rela_ent

2026-04-17 02:18:57 +02:00
parent 16401fb825
commit 843f029664
1 changed files with 3 additions and 0 deletions
--- a/common/lib/elf.c
+++ b/common/lib/elf.c
@@ -460,6 +460,9 @@ end_of_pt_segment:
        if (rela_ent == 0) {
            panic(true, "elf: dt_pltrelsz != 0 but rela_ent == 0");
        }
+        if (dt_pltrelsz % rela_ent != 0) {
+            panic(true, "elf: dt_pltrelsz not a multiple of rela_ent");
+        }
        relocs_i += dt_pltrelsz / rela_ent;
    }
    struct elf64_rela **relocs = ext_mem_alloc_counted(relocs_i, sizeof(struct elf64_rela *));