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elf: Fix UB on _dl_map_object_from_fd

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On 32-bit architecture ubsan triggers:

UBSAN: Undefined behaviour in dl-load.c:1345:54 pointer index expression with base 0x00612508 overflowed  to 0xf7c3a508

Use explicit uintptr_t operation instead.
Reviewed-by: Florian Weimer <fweimer@redhat.com>
This commit is contained in:
Adhemerval Zanella
2025-05-07 11:17:29 -03:00
parent 1642570563
commit e529bfe8de
1 changed files with 1 additions and 1 deletions
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elf/dl-load.c
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@@ -1340,7 +1340,7 @@ cannot enable executable stack as shared object requires");
/* Adjust the address of the TLS initialization image. */
if (l->l_tls_initimage != NULL)
l->l_tls_initimage = (char *) l->l_tls_initimage + l->l_addr;
l->l_tls_initimage = (void*)((uintptr_t)l->l_tls_initimage + l->l_addr);
/* Process program headers again after load segments are mapped in
case processing requires accessing those segments. Scan program