devmatch: Catch truncated linker hints files

PR:		282268
Reviewed by:	christos, imp
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D47243

This commit is contained in:

Mark Johnston

2024-10-23 16:55:16 +00:00

parent b5149b2653

commit 9b2f2fbfcb

1 changed files with 6 additions and 0 deletions

									
										sbin/devmatch/devmatch.c
									
		+6
		
												View File
												
				@@ -127,6 +127,12 @@ read_linker_hints(void)

							err(1, "Can't open %s for reading", fn);

					}

					if (len < sizeof(int)) {

						warnx("Linker hints file too short.");

						free(hints);

						hints = NULL;

						return;

					}

					if (*(int *)(intptr_t)hints != LINKER_HINTS_VERSION) {

						warnx("Linker hints version %d doesn't match expected %d.",

						    *(int *)(intptr_t)hints, LINKER_HINTS_VERSION);