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gnutls: fix CVE-2026-42014

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Backport patch to fix CVE-2026-42014.

References:
  https://nvd.nist.gov/vuln/detail/CVE-2026-42014

Upstream fix:
  https://gitlab.com/gnutls/gnutls/-/commit/3957f136e2ed23caf176a594b54b3827f5cef701

Tested with ptest

(From OE-Core rev: c0720c7cba0df610de0c95aa61a3e535df503501)

Signed-off-by: Jakub Szczudlo <jakub.szczudlo@nokia.com>
Signed-off-by: Yoann Congal <yoann.congal@smile.fr>
Signed-off-by: Paul Barker <paul@pbarker.dev>
This commit is contained in:
Jakub Szczudlo (Nokia) authored and Paul Barker committed 2026-10-19 09:03:17 +01:00
1 parent 55bc711a60
commit e2ca02cebe
2 files changed
+61
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meta/recipes-support/gnutls/gnutls/CVE-2026-42014.patch
+60
View File
@@ -0,0 +1,60 @@
From 3957f136e2ed23caf176a594b54b3827f5cef701 Mon Sep 17 00:00:00 2001
From: Alexander Sosedkin <asosedkin@redhat.com>
Date: Wed, 18 Mar 2026 18:19:06 +0100
Subject: [PATCH] pkcs11_write: fix UAF and leak in gnutls_pkcs11_token_set_pin
Changing Security Officer PIN with gnutls_pkcs11_token_set_pin() with
oldpin == NULL for a token that lacks a protected authentication path
led to a use-after-free.
Reported-by: Luigino Camastra and Joshua Rogers of AISLE Research Team
Fixes: #1766
Fixes: #1809
Fixes: CVE-2026-42014
Fixes: GNUTLS-SA-2026-04-29-9
CVSS: 4.0 Medium CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Signed-off-by: Alexander Sosedkin <asosedkin@redhat.com>
CVE: CVE-2026-42014
Upstream-Status: Backport [https://gitlab.com/gnutls/gnutls/-/commit/3957f136e2ed23caf176a594b54b3827f5cef701]
Signed-off-by: Jakub Szczudlo <jakub.szczudlo@nokia.com>
---
diff --git a/lib/pkcs11_write.c b/lib/pkcs11_write.c
index 961e1b9..9fe571e 100644
--- a/lib/pkcs11_write.c
+++ b/lib/pkcs11_write.c
@@ -1267,10 +1267,9 @@ int gnutls_pkcs11_token_set_pin(const char *token_url, const char *oldpin,
ses_flags = SESSION_WRITE | SESSION_LOGIN;
ret = pkcs11_open_session(&sinfo, NULL, info, ses_flags);
- p11_kit_uri_free(info);
-
if (ret < 0) {
gnutls_assert();
+ p11_kit_uri_free(info);
return ret;
}
@@ -1291,9 +1290,11 @@ int gnutls_pkcs11_token_set_pin(const char *token_url, const char *oldpin,
oldpin_size = L(oldpin);
if (!(sinfo.tinfo.flags & CKF_PROTECTED_AUTHENTICATION_PATH)) {
- if (newpin == NULL)
- return gnutls_assert_val(
+ if (newpin == NULL) {
+ ret = gnutls_assert_val(
GNUTLS_E_INVALID_REQUEST);
+ goto finish;
+ }
if (oldpin == NULL) {
struct pin_info_st pin_info;
@@ -1325,6 +1326,7 @@ int gnutls_pkcs11_token_set_pin(const char *token_url, const char *oldpin,
ret = 0;
finish:
+ p11_kit_uri_free(info);
pkcs11_close_session(&sinfo);
return ret;
}
meta/recipes-support/gnutls/gnutls_3.8.4.bb
+1
View File
@@ -58,6 +58,7 @@ SRC_URI = "https://www.gnupg.org/ftp/gcrypt/gnutls/v${SHRT_VER}/gnutls-${PV}.tar
file://CVE-2026-42012.patch \
file://CVE-2026-42013-pre1.patch \
file://CVE-2026-42013.patch \
file://CVE-2026-42014.patch \
"
SRC_URI[sha256sum] = "2bea4e154794f3f00180fa2a5c51fe8b005ac7a31cd58bd44cdfa7f36ebc3a9b"