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 5D2EE46D57B; Tue, 21 Jul 2026 18:49:25 +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=1784659766; cv=none; b=KbabXn+iY1yeg57A+5q2ls5rUEmSG599wf6iWVLK/tDh6NH861/RT6RfmIa9ld75z7NW/0OemzGrdAgDPS37S/uUxHmi7M1m1y+Hy05aecTqHpUUqolF8BCqWdidJ78E3+wwREEpxCvdQ08KCWGUxtpFnSLznMIKVWzXmS8cOvg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784659766; c=relaxed/simple; bh=Ch5L9OS7gRDQP+CXYFG1dpeZxf4j9tHDJZDPl4VYQ9o=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Ja5M75o4tZ9Tv6AAKVwcXbSOkADGLFw7869rx8PIoboZuXRW3LOTEz4x4nojlCAJqMGWaFrf24ieD7hG+N029aD9w8qiTqE+M3RTcXtER2ITpEuBwjoALqNpaAUQ4lFGgRiTabk9nSdbiuAvxITDXFOAGdoPHdFmoO63PUMc2L0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=ATchaCWm; 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="ATchaCWm" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7ABD81F01559; Tue, 21 Jul 2026 18:49:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1784659765; bh=kA1SOLVsiqXz+ycUkgN7Xne+VrZ37aU+o1iLGpTZtyQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=ATchaCWmAESlokYKLAX/ysBGKO1vwACbvuFKQPZXrix63dA8M0SKt94ZCytEKNvgI M9aZ6eUn7Ywhvyt+0lvkID68HjtOKrWuHEWY4rXX4nRAupvFz3sBUYuwRtdpi724AP GjxxNKJdBa4vOXC/A/1FmOua+FB6HSGWuJ61E/rE= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Herbert Xu , Sasha Levin Subject: [PATCH 7.1 0724/2077] crypto: rng - Free default RNG on module exit Date: Tue, 21 Jul 2026 17:06:37 +0200 Message-ID: <20260721152609.878051193@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260721152552.646164743@linuxfoundation.org> References: <20260721152552.646164743@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 7.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Herbert Xu [ Upstream commit 606ba888b98e0d26a2c4e5c8dc0542e3ad8f0f3a ] When the rng module is removed the default RNG will be leaked. Call crypto_del_default_rng to free it if possible. Fixes: 7cecadb7cca8 ("crypto: rng - Do not free default RNG when it becomes unused") Signed-off-by: Herbert Xu Signed-off-by: Sasha Levin --- crypto/rng.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/crypto/rng.c b/crypto/rng.c index 1d4b9177bad4d4..a07569ed1e5e0e 100644 --- a/crypto/rng.c +++ b/crypto/rng.c @@ -232,5 +232,16 @@ void crypto_unregister_rngs(struct rng_alg *algs, int count) } EXPORT_SYMBOL_GPL(crypto_unregister_rngs); +static void __exit rng_exit(void) +{ + int err; + + err = crypto_del_default_rng(); + if (err) + pr_err("Failed delete default RNG: %d\n", err); +} + +module_exit(rng_exit); + MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("Random Number Generator"); -- 2.53.0