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 695412D0602; Thu, 30 Jul 2026 15:03:50 +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=1785423831; cv=none; b=NqNjyMyWS6tDAXxxXWQMP4xD1glkhJkXsbQ+QDQZJDdYhY0I2noaxYRMVh6LovKP/OIIUbjZp3gs84RiybFi+dlg7yaDEFPxjv9k0KTpfrdTMrOpzVwOY0sFAh7OIwEHiEPnuICl22SVAoZTp2aaP8+PFyIzW2FXpvXd4eTPSO4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785423831; c=relaxed/simple; bh=6Emr84sls/caFHv2GLj9VwxajXVvgH6w1nivduYORTc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=F62XRBQc0CHKj34Rlb/RF3HVt+dh6gWwFIMVT6s3WPJl+D0jF9wcqQACOFuKGo2Wjx8UwVBb/vtGEKNbPjWn1O1WvEDwk9bIOJ91syk2v1+VTG0CpEERqgIsjKbl7Jc19H432wvbyfpgwgqjI14OWW92/NGrxjUMKMMbJ0UL+eQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=ysYsqIBN; 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="ysYsqIBN" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C3DF51F000E9; Thu, 30 Jul 2026 15:03:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1785423830; bh=TR4Qclv7faita4cMjuthoYedRVCcbn8grJXJ/5gD2sw=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=ysYsqIBNqJnje80YiThIpJb6y25gIT5n0uc5HX7QCxdItPPDLvXudW+xDkWTilKcN g+boftNWK6Tbb+OC5jW/3sEFBNewUurP2R7HZI4130z6F/oWqJGM+DBNZYQBaJpaPP z6e5Los7O1EyhwZ+nReHpbrWlZfaKvk7oeAIhTd4= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Tristan Madani , Christian Lamparter , Jeff Johnson , Sasha Levin Subject: [PATCH 6.18 182/675] wifi: carl9170: fix OOB read from off-by-two in TX status handler Date: Thu, 30 Jul 2026 16:08:32 +0200 Message-ID: <20260730141449.006631385@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260730141445.110192266@linuxfoundation.org> References: <20260730141445.110192266@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: Tristan Madani [ Upstream commit a3f42f1049ad80c65560d2b078ad426c3134f78d ] The bounds check in carl9170_tx_process_status() uses `i > ((cmd->hdr.len / 2) + 1)` which is off by two, allowing 2 extra iterations past valid _tx_status entries when the firmware- controlled hdr.ext exceeds hdr.len/2. Fix by using the correct comparison `i >= (cmd->hdr.len / 2)`. Fixes: a84fab3cbfdc ("carl9170: 802.11 rx/tx processing and usb backend") Signed-off-by: Tristan Madani Acked-by: Christian Lamparter Closes: https://syzkaller.appspot.com/bug?extid=5c1ca6ccaa1215781cac Link: https://patch.msgid.link/20260421134929.325662-3-tristmd@gmail.com Signed-off-by: Jeff Johnson Signed-off-by: Sasha Levin --- drivers/net/wireless/ath/carl9170/tx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath/carl9170/tx.c b/drivers/net/wireless/ath/carl9170/tx.c index b7717f9e1e9b92..b0eee8f892af70 100644 --- a/drivers/net/wireless/ath/carl9170/tx.c +++ b/drivers/net/wireless/ath/carl9170/tx.c @@ -692,7 +692,7 @@ void carl9170_tx_process_status(struct ar9170 *ar, unsigned int i; for (i = 0; i < cmd->hdr.ext; i++) { - if (WARN_ON(i > ((cmd->hdr.len / 2) + 1))) { + if (WARN_ON(i >= (cmd->hdr.len / 2))) { print_hex_dump_bytes("UU:", DUMP_PREFIX_NONE, (void *) cmd, cmd->hdr.len + 4); break; -- 2.53.0