Skip to main content

Browse the archive

Revision 91194e9b046e18ed813d4632e1c72683aac944ad authored by Alexander A. Klimov on 12 July 2020, 11:11:18 UTC, committed by Rich Felker on 15 August 2020, 02:05:12 UTC 
sh: Replace HTTP links with HTTPS ones
 
Rationale:
Reduces attack surface on kernel devs opening the links for MITM
as HTTPS traffic is much harder to manipulate.

Deterministic algorithm:
For each file:
  If not .svg:
    For each line:
      If doesn't contain `\bxmlns\b`:
        For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`:
	  If neither `\bgnu\.org/license`, nor `\bmozilla\.org/MPL\b`:
            If both the HTTP and HTTPS versions
            return 200 OK and serve the same content:
              Replace HTTP with HTTPS.

Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de>
Signed-off-by: Rich Felker <dalias@libc.org>
1 parent e1a8d38
Raw File
module_signature.c 
// SPDX-License-Identifier: GPL-2.0+
/*
 * Module signature checker
 *
 * Copyright (C) 2012 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells (dhowells@redhat.com)
 */

#include <linux/errno.h>
#include <linux/printk.h>
#include <linux/module_signature.h>
#include <asm/byteorder.h>

/**
 * mod_check_sig - check that the given signature is sane
 *
 * @ms:		Signature to check.
 * @file_len:	Size of the file to which @ms is appended.
 * @name:	What is being checked. Used for error messages.
 */
int mod_check_sig(const struct module_signature *ms, size_t file_len,
		  const char *name)
{
	if (be32_to_cpu(ms->sig_len) >= file_len - sizeof(*ms))
		return -EBADMSG;

	if (ms->id_type != PKEY_ID_PKCS7) {
		pr_err("%s: Module is not signed with expected PKCS#7 message\n",
		       name);
		return -ENOPKG;
	}

	if (ms->algo != 0 ||
	    ms->hash != 0 ||
	    ms->signer_len != 0 ||
	    ms->key_id_len != 0 ||
	    ms->__pad[0] != 0 ||
	    ms->__pad[1] != 0 ||
	    ms->__pad[2] != 0) {
		pr_err("%s: PKCS#7 signature info has unexpected non-zero params\n",
		       name);
		return -EBADMSG;
	}

	return 0;
}
back to top