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binutils: add fix for CVE-2022-38533 (heap buffer-overflow in strip).

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From upstream commit log:

PR29482 - strip: heap-buffer-overflow

PR 29482
* coffcode.h (coff_set_section_contents): Sanity check _LIB.
This commit is contained in:
fcambus 2022-12-12 21:41:19 +00:00
parent 0a7b6c018e
commit 1e709f0a64
2 changed files with 24 additions and 0 deletions
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1
devel/binutils/Makefile
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@ -1,6 +1,7 @@
COMMENT = GNU binary utilities
DISTNAME = binutils-2.39
REVISION = 0
CATEGORIES = devel

23
devel/binutils/patches/patch-bfd_coffcode_h Normal file
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@ -0,0 +1,23 @@
Fix for CVE-2022-38533: heap buffer overflow in strip (Binutils PR29482).
Upstream commit ef186fe54aa6d281a3ff8a9528417e5cc614c797.
Index: bfd/coffcode.h
--- bfd/coffcode.h.orig
+++ bfd/coffcode.h
@@ -4284,10 +4284,13 @@ coff_set_section_contents (bfd * abfd,
rec = (bfd_byte *) location;
recend = rec + count;
- while (rec < recend)
+ while (recend - rec >= 4)
{
+ size_t len = bfd_get_32 (abfd, rec);
+ if (len == 0 || len > (size_t) (recend - rec) / 4)
+ break;
+ rec += len * 4;
++section->lma;
- rec += bfd_get_32 (abfd, rec) * 4;
}
BFD_ASSERT (rec == recend);