From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 3939318C039 for ; Fri, 27 Sep 2024 12:40:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727440833; cv=none; b=UOot2c5kHKFHVq7fTv4K3nmvw8gucO5zC2f1BlYTdFVXeT9Ms1DnrTI57RZofnGlJkT3b9xYyg6Q9i76E3Gnwxd5nuMgXqr4cYoKbxX2Ls/K6ThoTsn9AKt3eKWqCc4WcBhLoHJvYXqQJOnIRT2jMq1dRR7I/3fnymNovoO+/yg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727440833; c=relaxed/simple; bh=7/4h6SlhskvnP0BGF41vLkTpa2pi1GTD/DKwEhOwEx4=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=Wa/ayUJPNTxgcVZpmZCIpfkYx73XPBGocHZPstqmteG0GQgPCzgLh3rONvNpK7ysTorVD9+JWCtApQa7UO4mIN/CJEdXxVi3nGecno7p8VsXIFtsjUlVpJrON6CnfiTySF/GvDYKQtxN9zJWPKSeUsu6EYoLgSkg9LgN/8XrT6o= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=yHRg/W5s; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="yHRg/W5s" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BAD4BC4CECD; Fri, 27 Sep 2024 12:40:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1727440833; bh=7/4h6SlhskvnP0BGF41vLkTpa2pi1GTD/DKwEhOwEx4=; h=From:To:Cc:Subject:Date:Reply-to:From; b=yHRg/W5sACEpQiV7RgK9RXOoTjVvrn0tg67/lYUtKv5mZ7RlJZVP+lomW+dM+mZ0w 6K0UrZNiNZJitdYrbKJ8qjA3O5BbE/jT8gzcUzoQtzsUFMIP/9+zJpeTfVe9F6F3Lo uhhDTCgfjozfH/RCG2juFc9Pwun8KosI51W+9RZs= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2024-46842: scsi: lpfc: Handle mailbox timeouts in lpfc_get_sfp_info Date: Fri, 27 Sep 2024 14:40:10 +0200 Message-ID: <2024092754-CVE-2024-46842-e52c@gregkh> X-Mailer: git-send-email 2.46.2 Precedence: bulk X-Mailing-List: linux-cve-announce@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Reply-to: , X-Developer-Signature: v=1; a=openpgp-sha256; l=2326; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=7/4h6SlhskvnP0BGF41vLkTpa2pi1GTD/DKwEhOwEx4=; b=owGbwMvMwCRo6H6F97bub03G02pJDGnfls8+b7vgTwLnstDKbVFGk3fvkjuTZRb0XuHONLlZN vL+FWb1HbEsDIJMDLJiiixftvEc3V9xSNHL0PY0zBxWJpAhDFycAjCRLFGGWcxVGo/evbzKeK66 ht9m+cxf9muevWGYn3ug/FRsh4C95PQLmc9Kfrc/TL7gBQA= X-Developer-Key: i=gregkh@linuxfoundation.org; a=openpgp; fpr=F4B60CC5BF78C2214A313DCB3147D40DDB2DFB29 Content-Transfer-Encoding: 8bit Description =========== In the Linux kernel, the following vulnerability has been resolved: scsi: lpfc: Handle mailbox timeouts in lpfc_get_sfp_info The MBX_TIMEOUT return code is not handled in lpfc_get_sfp_info and the routine unconditionally frees submitted mailbox commands regardless of return status. The issue is that for MBX_TIMEOUT cases, when firmware returns SFP information at a later time, that same mailbox memory region references previously freed memory in its cmpl routine. Fix by adding checks for the MBX_TIMEOUT return code. During mailbox resource cleanup, check the mbox flag to make sure that the wait did not timeout. If the MBOX_WAKE flag is not set, then do not free the resources because it will be freed when firmware completes the mailbox at a later time in its cmpl routine. Also, increase the timeout from 30 to 60 seconds to accommodate boot scripts requiring longer timeouts. The Linux kernel CVE team has assigned CVE-2024-46842 to this issue. Affected and fixed versions =========================== Fixed in 6.10.10 with commit bba47fe3b038 Fixed in 6.11 with commit ede596b1434b 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-2024-46842 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/scsi/lpfc/lpfc_els.c 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/bba47fe3b038cca3d3ebd799665ce69d6d273b58 https://git.kernel.org/stable/c/ede596b1434b57c0b3fd5c02b326efe5c54f6e48