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 ABDF93A8FEA; Sat, 17 Oct 2026 16:40:33 +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=1792255234; cv=none; b=PpuG3c1ixysq7H+eWn4xsWpQPTU/ARnGcMSLd7dgBxdFmS88Ks3ftpKza9lQFsbAQ8vYgUtX3M/DUE6wgNKww3A8xHE9Jz3WVQyyEZViyODJCx3UYmSgWQq7ozHhC3DDNwbMuWgnplYW0hzs8sAQ7hHBjrEb3EuwtRH5zxuv8S0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792255234; c=relaxed/simple; bh=VFd1JIq/G5qXz+W3DTMd/XO3GTwpg+Pjoz2Q+7Ul62k=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=YtcYYff8g6haHE1Sm3BXB3QOOIbuxzX3t4npbdTJ+nccu7lCgV6FIgv7MlmKKAeBIDrMy+eGWeZGmGeV/6hkEaGANVYa8depmNZenvDV6os8WjjhNrLv+J5BF5PyoGSa/hQoMc3IBYwviY7HNJ/rIxSsQIZ3GEAXDC9bhcKVlKM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=ejb0hXvk; 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="ejb0hXvk" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BC1A81F000C6; Sat, 17 Oct 2026 16:40:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1792255233; bh=CHzsruIzfVXB84zzVwKp4i1tW1NFrADaZpTT5FnJNPg=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=ejb0hXvkhkylJMNoEYDrEuc4NHduSiZ9/dVEANE5GfMaC97zv3rug2YGEJrP1DyGN OrZhp69p7xIbaIwBtJEYWSlyXej+IXsJPCoJTKNVNo5oEFFKYF0Vcm0RP61RdGWR89 v3pJAECqFHxD2qKg/ojqEa6AI/c2KdMKCHlFpDyM= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Malaya Kumar Rout , Thomas Gleixner , Sasha Levin Subject: [PATCH 6.12 710/869] time/namespace: Validate nanosecond field in proc_timens_set_offset() Date: Sat, 17 Oct 2026 17:59:11 +0200 Message-ID: <20261017160055.164570123@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261017160036.979869304@linuxfoundation.org> References: <20261017160036.979869304@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 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Malaya Kumar Rout [ Upstream commit 06aba58e58492d2b8eae059274caed29025ea96e ] The function validates tv_sec to be within [-KTIME_SEC_MAX, KTIME_SEC_MAX] but never validates that tv_nsec is within the valid range of [0, NSEC_PER_SEC-1] before using it in timespec64_add(). timespec64_add() expects both timespec64 structures to have normalized values with tv_nsec in the range [0, 999999999]. If off->val.tv_nsec contains invalid values (negative or >= NSEC_PER_SEC), it could lead to incorrect calculations or unexpected behavior. Add validation to ensure tv_nsec is within the valid range before performing the addition. Fixes: 04a8682a71be ("fs/proc: Introduce /proc/pid/timens_offsets") Signed-off-by: Malaya Kumar Rout Signed-off-by: Thomas Gleixner Link: https://patch.msgid.link/20260704093429.89350-1-malayarout91@gmail.com Signed-off-by: Sasha Levin --- kernel/time/namespace.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/kernel/time/namespace.c b/kernel/time/namespace.c index 0775b9ec952af..09a4cc85a9fbc 100644 --- a/kernel/time/namespace.c +++ b/kernel/time/namespace.c @@ -410,6 +410,11 @@ int proc_timens_set_offset(struct file *file, struct task_struct *p, goto out; } + if (off->val.tv_nsec < 0 || off->val.tv_nsec >= NSEC_PER_SEC) { + err = -EINVAL; + goto out; + } + err = -ERANGE; if (off->val.tv_sec > KTIME_SEC_MAX || -- 2.53.0