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 CCDA5434E2F; Tue, 21 Jul 2026 22:15:39 +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=1784672141; cv=none; b=ClBCqDiEojzNeSJpTztNYRpeS9QsaCz1dGGfn+kTqu+9QiP9QX8B8J5Ii+2YFrTLVMWDiK0+ymcYwW7PWpUAsuDFtZpinNSceumFOUAXh+T0e0xbIuvLfVycIcCm3XY51Mg8meWkWS5pg9qn8p3SLeD+L+nflY6aDpgbqtht0+s= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784672141; c=relaxed/simple; bh=HAa5X0pyJPqqywsFmzO1YyRPb9MX5CRHzlZf128K9tg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=WEZVVNOjJD04krRtRVf2+f+lZr0RBOXFX0cMbpbSoZ9wzag/kHBbXeH+wn/dycpP0T0V4eCszxqlwvT46WYe/6+wFm7g+GEX+m5iztHgxNFKLdPfg13RHeTqw8JOYLTJTzzCMQwOxSFJ7ztGQBeCoRxGyD1jIVGxJO/r8SNS/Vg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=nfRPD2qW; 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="nfRPD2qW" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 36BF61F000E9; Tue, 21 Jul 2026 22:15:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1784672139; bh=4drRA+T0vyYFshy5OkeZYKgIl7QFepOCjJW8FA2abj0=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=nfRPD2qWEyk399OvckHeKHw6FoJA9VNCpItt+trJaYeW9i1j/+oGCITlRSnRzMhXv zHyi7jcJ4V68++zRpZRZ4DcU038RAJLXiAmHqoodS5ZGgBZzgiholazVVtCcjlTpzw 5WGMtwMEctk/2D34kK0YqzWg+FsIJjtXZWbgjXb4= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, David Howells , Marc Dionne , linux-afs@lists.infradead.org, "Christian Brauner (Amutable)" , Sasha Levin Subject: [PATCH 5.15 512/843] afs: Fix unchecked-length string display in debug statement Date: Tue, 21 Jul 2026 17:22:27 +0200 Message-ID: <20260721152417.549744369@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260721152405.946368001@linuxfoundation.org> References: <20260721152405.946368001@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 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: David Howells [ Upstream commit 903d37c97228258da71e092f8b4ab260ce81497d ] Fix afs_extract_vlserver_list() to limit the length of the displayed string in a debug statement(). Fixes: 0a5143f2f89c ("afs: Implement VL server rotation") Closes: https://sashiko.dev/#/patchset/20260618074903.2374756-1-dhowells%40redhat.com Signed-off-by: David Howells Link: https://patch.msgid.link/20260622090856.2746629-22-dhowells@redhat.com cc: Marc Dionne cc: linux-afs@lists.infradead.org Signed-off-by: Christian Brauner (Amutable) Signed-off-by: Sasha Levin --- fs/afs/vl_list.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/fs/afs/vl_list.c b/fs/afs/vl_list.c index 631ee7e0629dc1..2761ac3ab0076f 100644 --- a/fs/afs/vl_list.c +++ b/fs/afs/vl_list.c @@ -192,6 +192,8 @@ struct afs_vlserver_list *afs_extract_vlserver_list(struct afs_cell *cell, b += sizeof(*hdr); while (end - b >= sizeof(bs)) { + int nlen; + bs.name_len = afs_extract_le16(&b); bs.priority = afs_extract_le16(&b); bs.weight = afs_extract_le16(&b); @@ -201,10 +203,12 @@ struct afs_vlserver_list *afs_extract_vlserver_list(struct afs_cell *cell, bs.protocol = *b++; bs.nr_addrs = *b++; + nlen = min3(bs.name_len, end - b, 255); + _debug("extract %u %u %u %u %u %u %*.*s", bs.name_len, bs.priority, bs.weight, bs.port, bs.protocol, bs.nr_addrs, - bs.name_len, bs.name_len, b); + bs.name_len, nlen, b); if (end - b < bs.name_len) break; -- 2.53.0