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 8641F46DFF2; Tue, 21 Jul 2026 17:58:46 +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=1784656731; cv=none; b=Dv4JntjFgX5Th7gRRNHEHQEE8vSsnIVRwvWRzdpLBLw1GKTq6xAUGtbnmXfh33Jp0kzeHh2EwyA75ESbDy6d4zQj83Vcnc3JuBMMqcMx0gR27Do7WybTowJgOuauzgKiW/CbVZgt9UvltMu39HvFiZMRlLGeTZL9Vsc0Yx/LbHQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784656731; c=relaxed/simple; bh=mjmGKDzNJuBdJSg2TYYDcmP5F9eETlrjDzgQSDBJcG0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=MuL31mLHH6xHfc9LZnVWclmCv/2pffR7dim45eh+X2wwmq0QvCF6+9UO5XhVsL89mzdji6TCXnxzDzDnRSsjza/3LbheLHGjhkNt1KsRvUzxVOmQkmSzbRdK+FWpPESPuwdjdF5i6braLL8XReWMZ20Dpo6H2bRDdfyTseKNTRs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=2ZOw1fcx; 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="2ZOw1fcx" Received: by smtp.kernel.org (Postfix) with ESMTPSA id EC4441F000E9; Tue, 21 Jul 2026 17:58:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1784656726; bh=1gqP7ZHGCyZcmLnHoGo3YeM+J28XZ50FCyiA2YCDLvg=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=2ZOw1fcxxMKAaDa4JVAom02YBs+lwFaadF9V6G7Rqc4m6WEhvXESiHycV3PLauEWE sU9oi7xblzY7sDwR7Ox9sEnkzpes0W2zAGrq0PlirfMG107tAHNhb53epmDg0BFfri 87AOa0PiORKsX8v1cm1stiTb3Uyn0FR3NwDDcO7Y= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Herbert Xu , Sasha Levin Subject: [PATCH 6.18 0495/1611] crypto: rng - Free default RNG on module exit Date: Tue, 21 Jul 2026 17:10:11 +0200 Message-ID: <20260721152526.475721696@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260721152514.750365251@linuxfoundation.org> References: <20260721152514.750365251@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 6.18-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 ee1768c5a4005b..b021936094b077 100644 --- a/crypto/rng.c +++ b/crypto/rng.c @@ -226,5 +226,16 @@ 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