The branch stable/12 has been updated by kevans: URL: https://cgit.FreeBSD.org/src/commit/?id=dd80f75e664760479f55a2197448c014cfdd3025
commit dd80f75e664760479f55a2197448c014cfdd3025 Author: Ian Lepore <[email protected]> AuthorDate: 2019-12-22 22:33:22 +0000 Commit: Kyle Evans <[email protected]> CommitDate: 2021-10-08 01:15:58 +0000 In gptboot, don't assume a partition number is a single digit, 1-9. GPT partitions can have 128 partitions, so parse contiguous digits and then validate that the number is between 1-128 inclusive. I'm not sure 128 is a hard limit in the GPT standard, but it's the common number in use, and it's a better upper limit than 9. (cherry picked from commit 42e08952bb84aa86dfdcc7b80c95b58e515bdce7) --- stand/i386/gptboot/gptboot.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/stand/i386/gptboot/gptboot.c b/stand/i386/gptboot/gptboot.c index 68ef55073ecb..7b5423ede6d8 100644 --- a/stand/i386/gptboot/gptboot.c +++ b/stand/i386/gptboot/gptboot.c @@ -574,10 +574,12 @@ parse_cmds(char *cmdstr, int *dskupdated) if (arg[1] != 'p' || gdsk.dsk.unit > 9) return (-1); arg += 2; - gdsk.dsk.part = *arg - '0'; - if (gdsk.dsk.part < 1 || gdsk.dsk.part > 9) + j = 0; + while (*arg >= '0' && *arg <= '9') + j = j * 10 + *arg++ - '0'; + gdsk.dsk.part = j; + if (gdsk.dsk.part < 1 || gdsk.dsk.part > 128) return (-1); - arg++; if (arg[0] != ')') return (-1); arg++;
