From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0C7C14D37AF; Wed, 30 Sep 2026 18:46:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790793985; cv=none; b=UodwU2MzcsWzsLNntEBkdobkRs8h7pdahkHfXPgDhWKPMFRqRGXFL/6om8QThK8XcWl7VIYO+g2HQrOAIVKgcdjSke9ir9Pg77O0QJAmxU5feOEISJSfOlLg70hsrky1eKohygA4f7pdLhZ/cTUvo8Vi7+AbdoBF/HW0cyk9kOE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790793985; c=relaxed/simple; bh=P9OU62F9DjEvJ1FtV5GfGP6RHTUxP4zYeGeO6G99eqI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=b6F0ERTu+Y/2IDrG3Z3LzmaRFBPVrF1CHwck6MGLiKE5vr/MapJuFo3j1Stk5wa7afmyxXMaMsmrufTFEFhsdVMCj4PP2IAvLvhCfdyWOpxNLisIdkiB1qRlF1G0CTuT6P1QqPzBjdVYjbW0Xv88k8iw//G1fmq0yHCnAFXUu1k= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=R3BIc1D5; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="R3BIc1D5" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 31F6A1F000FF; Wed, 30 Sep 2026 18:46:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1790793983; bh=uHT+LMFxckmb2iObzcT4drcOni7QfJEOZf/59mn77J4=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=R3BIc1D59nGzBuH5b+3a0z6aEcyhsXvxqIuk8N2eMra2hyXjjBbqXGvIbrO/k48Sh iAyr6chjaGtucCUxSyXcGvQTMlEzLOc7xrE5gKRgG5OOkkAaTCHJb5kUGb/VIsfBy3 +iXp3o256qXASR+y3FF2ta5AqNlOZ1Hl8QkoZc0o= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Stefan Berger , Kamlesh Kumar , Mimi Zohar , Sasha Levin Subject: [PATCH 6.6 0049/1193] integrity: Check for NULL returned by asymmetric_key_public_key Date: Wed, 30 Sep 2026 17:12:13 +0200 Message-ID: <20260930152435.370344182@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260930152434.301151190@linuxfoundation.org> References: <20260930152434.301151190@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Stefan Berger [ Upstream commit c93a5f038ccc11ed8558ce642f62d5ede701a348 ] Check for a NULL pointer returned by asymmetric_key_public_key and return -ENOKEY in this case. Signed-off-by: Stefan Berger Tested-by: Kamlesh Kumar Signed-off-by: Mimi Zohar Signed-off-by: Sasha Levin --- security/integrity/digsig_asymmetric.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/security/integrity/digsig_asymmetric.c b/security/integrity/digsig_asymmetric.c index 895f4b9ce8c6b..b6b66f34cbf93 100644 --- a/security/integrity/digsig_asymmetric.c +++ b/security/integrity/digsig_asymmetric.c @@ -108,6 +108,10 @@ int asymmetric_verify(struct key *keyring, const char *sig, pks.hash_algo = hash_algo_name[hdr->hash_algo]; pk = asymmetric_key_public_key(key); + if (!pk) { + ret = -ENOKEY; + goto out; + } pks.pkey_algo = pk->pkey_algo; if (!strcmp(pk->pkey_algo, "rsa")) { pks.encoding = "pkcs1"; -- 2.53.0