Ignore malformed ElfXX_Shdr in search for .text or .note

https://github.com/upx/upx/issues/287 modified: p_vmlinx.cpp
2024-12-12 15:05:56 +00:00 · 2019-07-21 07:40:21 -07:00 · 2019-07-21 07:40:21 -07:00 · 276b748aa6
commit 276b748aa6
parent 23570097cf
1 changed files with 1 additions and 0 deletions
--- a/src/p_vmlinx.cpp
+++ b/src/p_vmlinx.cpp
@ -577,6 +577,7 @@ int PackVmlinuxBase<T>::canUnpack()
    Shdr *p;
    for (p= shdri, j= ehdri.e_shnum; --j>=0; ++p) {
        if ((unsigned)file_size < (p->sh_size + p->sh_offset)
+        || (5+ p->sh_name) < p->sh_name  // wrap: ignore malformed
        ||  shstrsec->sh_size < (5+ p->sh_name) ) {
            continue;
        }