From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 58B8526B2C5; Wed, 9 Jul 2025 07:13:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752045211; cv=none; b=r66L3+G9rVDnCu1vGclo+LvaGS/tJMTuhScJNhdbJDeHdMzEQvEniMZwkFqlKYCXdLFcuM1iE1fP0hDg5R0YvAIE6QEBii6IhvF+V10+GQdH/zJuTqEmYMyFvZVYK6J8aadSuR0Q34SMjuIeDgLj50535O+lFIyOR8CBH3I3HB0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752045211; c=relaxed/simple; bh=3osnXgMgN4w/yYrJq+7RqfbP4IpmVhNsPMG9PZRUfxI=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=LaCF6F6uwVdmYG6HdHqPsQocsWG3AykJIANERxS5ArD2DwU2I+/CT4ujnKINudSFRVAJ+EPNLjz27BtwuxpEWKYP7HAJTM+1PVF2UeDd+Ocq4YeIBzw5JOyFzooP7IDVzlwhKUuPb1a6paygIBTGwlKXbm1wHNrTLwOsZoOLRwc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=EV7njd2/; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="EV7njd2/" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C7D11C4CEF0; Wed, 9 Jul 2025 07:13:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1752045210; bh=3osnXgMgN4w/yYrJq+7RqfbP4IpmVhNsPMG9PZRUfxI=; h=From:To:Cc:Subject:Date:From; b=EV7njd2/g+DpHisyfHyFmUfvThN+qs6OFQEziryn6gOZAbOSU2t/uTAFo8ugwJIS4 JupHpzZOTURPdW+2VOq1i5lFXeXNm2HA6uT2YOUMoqqhEKNExkgTEfjj9nAG14xQix 2tyrrotI2MfWKoZ76+lNVJijVRsh9KbSMR/+a0FqFqdfmW0g8XerRoG4Us6U19Kieh eXbqi6cq6F1Q+sldu9HRnm+WJH3+9TlnPDaSYkoXlZMyuvr7xmmTu1kiz5Ioj6fVAL GHlxjcRpfz2HsObQeXWWIDUUzHpiglnxeL6XXU66eWI7Xo8eBCzAkwYuJCnqQDXhFw hdtff1Kmzk7rA== From: Eric Biggers To: David Howells Cc: linux-crypto@vger.kernel.org, netdev@vger.kernel.org, Eric Biggers Subject: [PATCH] crypto/krb5: Fix memory leak in krb5_test_one_prf() Date: Wed, 9 Jul 2025 00:11:40 -0700 Message-ID: <20250709071140.99461-1-ebiggers@kernel.org> X-Mailer: git-send-email 2.50.1 Precedence: bulk X-Mailing-List: linux-crypto@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Fix a leak reported by kmemleak: unreferenced object 0xffff8880093bf7a0 (size 32): comm "swapper/0", pid 1, jiffies 4294877529 hex dump (first 32 bytes): 9d 18 86 16 f6 38 52 fe 86 91 5b b8 40 b4 a8 86 .....8R...[.@... ff 3e 6b b0 f8 19 b4 9b 89 33 93 d3 93 85 42 95 .>k......3....B. backtrace (crc 8ba12f3b): kmemleak_alloc+0x8d/0xa0 __kmalloc_noprof+0x3cd/0x4d0 prep_buf+0x36/0x70 load_buf+0x10d/0x1c0 krb5_test_one_prf+0x1e1/0x3c0 krb5_selftest.cold+0x7c/0x54c crypto_krb5_init+0xd/0x20 do_one_initcall+0xa5/0x230 do_initcalls+0x213/0x250 kernel_init_freeable+0x220/0x260 kernel_init+0x1d/0x170 ret_from_fork+0x301/0x410 ret_from_fork_asm+0x1a/0x30 Fixes: fc0cf10c04f4 ("crypto/krb5: Implement crypto self-testing") Signed-off-by: Eric Biggers --- crypto/krb5/selftest.c | 1 + 1 file changed, 1 insertion(+) diff --git a/crypto/krb5/selftest.c b/crypto/krb5/selftest.c index 2a81a6315a0d0..4519c572d37ef 100644 --- a/crypto/krb5/selftest.c +++ b/crypto/krb5/selftest.c @@ -150,10 +150,11 @@ static int krb5_test_one_prf(const struct krb5_prf_test *test) ret = 0; out: clear_buf(&result); + clear_buf(&prf); clear_buf(&octet); clear_buf(&key); return ret; } base-commit: 733923397fd95405a48f165c9b1fbc8c4b0a4681 -- 2.50.1