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 C1CAE385D69 for ; Sat, 15 Aug 2026 06:37:50 +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=1786775871; cv=none; b=KhOVwjpu6cTSgKiKsIw6UokKeQhfy1mrRPDynbKBsV4CImIyayfTN7ONeAQsEUF0ViDiw7VgBJdFVM+o0q1o3+SfHXHXlSjkuCwpW+ObdleZa3vjQsjyHmUIoU4ZHtYXPcpafkp2XYrOD7k/ef2M+o0oOzGiPyc9vyHZvppLq44= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786775871; c=relaxed/simple; bh=bAGUrCFOuGtFkN1tnovEzYsu4nq4aiHwL8bSqfQtg4w=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=IKmrN32bphI3UB9zzXC6YEa0ocsofnMY8aiT7sy181s868uCmf4GRQ4EC3X55Amh7g89YRBzw0XDhOlO5FMBxDwy0Tvhht3ebK5puIaj1ywWVXKsgbpt49yY/fCBNrOUoMw2mDWRvM8ng51uw7cdwoFiBEuDRB+zQ/Ok2VX7jmE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=BruQNbEe; 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="BruQNbEe" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 217DF1F000E9; Sat, 15 Aug 2026 06:37:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1786775870; bh=N98cYiafBLOO/xxTxWixPf3tR0EKrCz3OI1bZlW7jks=; h=From:To:Cc:Subject:Date:Reply-To; b=BruQNbEemQwdlv2Jz3mcPxIsYAW+fE5I+2eiaZ0wH+z3o4H9x47iU1fZV7wWrXL7o sz9xKvr87/206Srh0mZUgguVZ12t0zufbTl2ueYGdDo4bkXb587BUQykshdd7OjkVF CwXc8IJc+7oKfU1orffEt3lIZVFwbMYsIYjUH8PI= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-74375: md/raid1,raid10: fix deadlock in read error recovery path Date: Sat, 15 Aug 2026 15:11:42 +0900 Message-ID: <2026081504-CVE-2026-74375-aa69@gregkh> X-Mailer: git-send-email 2.55.0 Reply-To: , Precedence: bulk X-Mailing-List: linux-cve-announce@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2272; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=2txRLx5EYapcp+py9afbIoNteE+szIgWBtAv1hBNJ5c=; b=owGbwMvMwCRo6H6F97bub03G02pJDFkNjBLfXqxN+3NHS+v3zPAX7eyZdyx1XgTbP1644c5D+ z0Np+4IdsSyMAgyMciKKbJ82cZzdH/FIUUvQ9vTMHNYmUCGMHBxCsBE2LYxzLPYK3CrreLV6n1J N2Ym/NUPe8OjvpRhfg1naNqqtfvPOimtnBP14s2CwBBDcwA= X-Developer-Key: i=gregkh@linuxfoundation.org; a=openpgp; fpr=F4B60CC5BF78C2214A313DCB3147D40DDB2DFB29 Content-Transfer-Encoding: 8bit From: Greg Kroah-Hartman Description =========== In the Linux kernel, the following vulnerability has been resolved: md/raid1,raid10: fix deadlock in read error recovery path raid1d and raid10d may resubmit a split md cloned bio while handling a read error. In this case, resubmitting the bio can lead to a deadlock if the array is suspended before md_handle_request() acquires an active_io reference via percpu_ref_tryget_live(). Since the cloned bio already holds an active_io reference, trying to acquire another reference via percpu_ref_tryget_live() can lead to a deadlock while the array is suspended. Fix this by using percpu_ref_get() for md cloned bios. The Linux kernel CVE team has assigned CVE-2026-74375 to this issue. Affected and fixed versions =========================== Issue introduced in 6.6 with commit bb2a9acefaf9ce5bbc1e70f407e34599233d0243 and fixed in 7.1.5 with commit 38777f014c37972868f1733a651c85288bb8a757 Issue introduced in 6.6 with commit bb2a9acefaf9ce5bbc1e70f407e34599233d0243 and fixed in 7.2-rc1 with commit 7b15c24f805339a585cfe7d72f446b7e88b9bcc0 Please see https://www.kernel.org for a full list of currently supported kernel versions by the kernel community. Unaffected versions might change over time as fixes are backported to older supported kernel versions. The official CVE entry at https://cve.org/CVERecord/?id=CVE-2026-74375 will be updated if fixes are backported, please check that for the most up to date information about this issue. Affected files ============== The file(s) affected by this issue are: drivers/md/md.c drivers/md/md.h Mitigation ========== The Linux kernel CVE team recommends that you update to the latest stable kernel version for this, and many other bugfixes. Individual changes are never tested alone, but rather are part of a larger kernel release. Cherry-picking individual commits is not recommended or supported by the Linux kernel community at all. If however, updating to the latest release is impossible, the individual changes to resolve this issue can be found at these commits: https://git.kernel.org/stable/c/38777f014c37972868f1733a651c85288bb8a757 https://git.kernel.org/stable/c/7b15c24f805339a585cfe7d72f446b7e88b9bcc0