@@ -411,11 +411,9 @@ static int read_bootdev(void *ctx, char **pos, struct autoboot_option *opt)
if (!strncmp(*pos, "uuid:", strlen("uuid:"))) {
prefix = strlen("uuid:");
opt->boot_type = BOOT_DEVICE_UUID;
- rc = 0;
} else if (!strncmp(*pos, "mac:", strlen("mac:"))) {
prefix = strlen("mac:");
opt->boot_type = BOOT_DEVICE_UUID;
- rc = 0;
} else {
type = find_device_type(*pos);
if (type != DEVICE_TYPE_UNKNOWN) {
@@ -429,9 +427,12 @@ static int read_bootdev(void *ctx, char **pos, struct autoboot_option *opt)
if (delim)
len = (int)(delim - *pos) - prefix;
else
- len = strlen(*pos);
+ len = strlen(*pos) - prefix;
- opt->uuid = talloc_strndup(ctx, *pos + prefix, len);
+ if (len) {
+ opt->uuid = talloc_strndup(ctx, *pos + prefix, len);
+ rc = 0;
+ }
}
/* Always advance pointer to next option or end */
If a "uuid:" label is set in the petitboot,bootdevs parameter without a matching UUID, the UUID is unintentionally accepted and set to NULL. This can cause a segfault in nc-config when device UUIDs are compared against the autoboot option. Instead treat options like this as malformed. Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com> --- discover/platform-powerpc.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-)