mirror of
https://github.com/archlinuxarm/PKGBUILDs.git
synced 2024-11-08 22:45:43 +00:00
86 lines
2.6 KiB
Diff
86 lines
2.6 KiB
Diff
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[PATCH] ldconfig: file truncated while reading soname after patchelf [BZ #23964]
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The way loadaddr is computed from the first LOAD segment in process_elf_file
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assumes .dynstr is also contained in that segment. That is not necessarily
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true, especially for libraries that have been touched by patchelf.
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With this patch, the address read from the dynamic segment is checked against
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all applicable segments instead of only the first one.
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[BZ #23964]
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* elf/readelflib.c: Fix resolving of loadaddr for .dynstr vaddr.
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---
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elf/readelflib.c | 33 ++++++++++++++++-----------------
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1 file changed, 16 insertions(+), 17 deletions(-)
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diff --git a/elf/readelflib.c b/elf/readelflib.c
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index 5a1e2dc2df..bc1195c175 100644
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--- a/elf/readelflib.c
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+++ b/elf/readelflib.c
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@@ -98,11 +98,6 @@ process_elf_file (const char *file_name, const char *lib, int *flag,
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switch (segment->p_type)
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{
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- case PT_LOAD:
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- if (loadaddr == (ElfW(Addr)) -1)
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- loadaddr = segment->p_vaddr - segment->p_offset;
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- break;
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-
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case PT_DYNAMIC:
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if (dynamic_addr)
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error (0, 0, _("more than one dynamic segment\n"));
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@@ -176,11 +171,6 @@ process_elf_file (const char *file_name, const char *lib, int *flag,
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}
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}
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- if (loadaddr == (ElfW(Addr)) -1)
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- {
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- /* Very strange. */
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- loadaddr = 0;
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- }
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/* Now we can read the dynamic sections. */
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if (dynamic_size == 0)
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@@ -190,22 +180,31 @@ process_elf_file (const char *file_name, const char *lib, int *flag,
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check_ptr (dynamic_segment);
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/* Find the string table. */
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- dynamic_strings = NULL;
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for (dyn_entry = dynamic_segment; dyn_entry->d_tag != DT_NULL;
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++dyn_entry)
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{
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check_ptr (dyn_entry);
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if (dyn_entry->d_tag == DT_STRTAB)
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- {
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- dynamic_strings = (char *) (file_contents + dyn_entry->d_un.d_val - loadaddr);
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- check_ptr (dynamic_strings);
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- break;
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- }
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+ break;
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}
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- if (dynamic_strings == NULL)
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+ for (i = 0, segment = elf_pheader;i < elf_header->e_phnum; i++, segment++)
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+ {
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+ ElfW(Addr) vaddr = dyn_entry->d_un.d_ptr;
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+ if (segment->p_type == PT_LOAD &&
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+ vaddr >= segment->p_vaddr &&
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+ vaddr < segment->p_vaddr + segment->p_filesz)
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+ {
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+ loadaddr = segment->p_vaddr - segment->p_offset;
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+ break;
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+ }
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+ }
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+ if (loadaddr == (ElfW(Addr)) -1)
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return 1;
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+ dynamic_strings = (char *) (file_contents + dyn_entry->d_un.d_val - loadaddr);
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+ check_ptr (dynamic_strings);
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+
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/* Now read the DT_NEEDED and DT_SONAME entries. */
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for (dyn_entry = dynamic_segment; dyn_entry->d_tag != DT_NULL;
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++dyn_entry)
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--
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2.19.2
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