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sframe: fix PR libsframe/33051

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Fix PR libsframe/Bug 33051 - ASAN: heap-buffer-overflow
../../src/libsframe/sframe.c:1054 in
sframe_get_funcdesc_with_addr_internal

The previous commit 9d2a24349e (libsframe: correct binary search for
SFrame FDE) adapted the binary search logic in
sframe_get_funcdesc_with_addr_internal.  Adjusting the upper end of the
search index was missed.

The search must only be done for FDEs starting at index 0 and up until
num_fdes - 1.  Prior logic of searching (before commit 9d2a24349e) was
a bit different.

libsframe/
	* sframe.c: Use the correct high index.
This commit is contained in:
Indu Bhagat
2025-06-03 23:10:46 -07:00
parent 062184b9eb
commit d984b08bb7
1 changed files with 1 additions and 1 deletions
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2
libsframe/sframe.c
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@@ -1044,7 +1044,7 @@ sframe_get_funcdesc_with_addr_internal (sframe_decoder_ctx *ctx, int32_t addr,
/* Do the binary search. */ /* Do the binary search. */
fdp = (sframe_func_desc_entry *) ctx->sfd_funcdesc; fdp = (sframe_func_desc_entry *) ctx->sfd_funcdesc;
low = 0; low = 0;
high = dhp->sfh_num_fdes; high = dhp->sfh_num_fdes - 1;
while (low <= high) while (low <= high)
{ {
int mid = low + (high - low) / 2; int mid = low + (high - low) / 2;