diff options
Diffstat (limited to 'meta/recipes-support/gnutls/gnutls/CVE-2021-4209.patch')
| -rw-r--r-- | meta/recipes-support/gnutls/gnutls/CVE-2021-4209.patch | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/meta/recipes-support/gnutls/gnutls/CVE-2021-4209.patch b/meta/recipes-support/gnutls/gnutls/CVE-2021-4209.patch new file mode 100644 index 0000000000..0bcb55e573 --- /dev/null +++ b/meta/recipes-support/gnutls/gnutls/CVE-2021-4209.patch @@ -0,0 +1,37 @@ +From 3db352734472d851318944db13be73da61300568 Mon Sep 17 00:00:00 2001 +From: Daiki Ueno <ueno@gnu.org> +Date: Wed, 22 Dec 2021 09:12:25 +0100 +Subject: [PATCH] wrap_nettle_hash_fast: avoid calling _update with zero-length + input + +As Nettle's hash update functions internally call memcpy, providing +zero-length input may cause undefined behavior. + +Signed-off-by: Daiki Ueno <ueno@gnu.org> + +https://gitlab.com/gnutls/gnutls/-/commit/3db352734472d851318944db13be73da61300568 +Upstream-Status: Backport +CVE: CVE-2021-4209 +Signed-off-by: Chee Yang Lee <chee.yang.lee@intel.com> +--- + lib/nettle/mac.c | 4 +++- + 1 file changed, 3 insertions(+), 1 deletion(-) + +diff --git a/lib/nettle/mac.c b/lib/nettle/mac.c +index f9d4d7a8df..35e070fab0 100644 +--- a/lib/nettle/mac.c ++++ b/lib/nettle/mac.c +@@ -788,7 +788,9 @@ static int wrap_nettle_hash_fast(gnutls_digest_algorithm_t algo, + if (ret < 0) + return gnutls_assert_val(ret); + +- ctx.update(&ctx, text_size, text); ++ if (text_size > 0) { ++ ctx.update(&ctx, text_size, text); ++ } + ctx.digest(&ctx, ctx.length, digest); + + return 0; +-- +GitLab + |