diff options
| -rw-r--r-- | kernel/module.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/kernel/module.c b/kernel/module.c index 34fe2824eb56..387ee77bdbd6 100644 --- a/kernel/module.c +++ b/kernel/module.c @@ -2883,12 +2883,13 @@ static int module_sig_check(struct load_info *info, int flags) const unsigned long markerlen = sizeof(MODULE_SIG_STRING) - 1; const char *reason; const void *mod = info->hdr; - + bool mangled_module = flags & (MODULE_INIT_IGNORE_MODVERSIONS | + MODULE_INIT_IGNORE_VERMAGIC); /* - * Require flags == 0, as a module with version information - * removed is no longer the module that was signed + * Do not allow mangled modules as a module with version information + * removed is no longer the module that was signed. */ - if (flags == 0 && + if (!mangled_module && info->len > markerlen && memcmp(mod + info->len - markerlen, MODULE_SIG_STRING, markerlen) == 0) { /* We truncate the module to discard the signature */ |