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 723593358D6 for ; Fri, 8 May 2026 14:25:46 +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=1778250346; cv=none; b=C15ZczvxZX7iGMoq38RjOHGlLOKqYTRyP3Axs8Lf2V/KvnRnFW736Qm+DyFQmibcTFHdydc8Ljy0bY0rUkfFWmUnnFuJf8oRTfhPkbcEaRXhSqCAlJW9yKS+KJD0LRniiLknLM/CMA8wYO1AuXL22RetxgMh8aYjVtzIPWHKi+s= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778250346; c=relaxed/simple; bh=s+nwBGisVLj4DKH7d5aM0dNfhZonRuFU0ejvD+587zg=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=UPwaUsw9EyeJxP/2RDghv7g1diAcjMVPp32spJ5fats0b49Eyn0eTlYPRGSJzF9EJdmBQg/gznccalLkPFtDdqME2aWXEA0ruvgXegWertk0Z3Z9MvOEp6UyxYS8LMPQssQrQ5qVO9OG6fMqADsQWdDwqdQy/ZWzOd7T3YpmWx4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=jovc6TgR; 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="jovc6TgR" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 07808C2BCB0; Fri, 8 May 2026 14:25:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1778250346; bh=s+nwBGisVLj4DKH7d5aM0dNfhZonRuFU0ejvD+587zg=; h=From:To:Cc:Subject:Date:Reply-To:From; b=jovc6TgRKfOCrLczwiiH67vlPsvyLjdd28tydJUKAFBJKtVDyO1Yf+4zLD5fAN05L GXOtbdG7TByRsOzBwh2osGl5hqZf4nGftRXfPgEKmgMTtgMPMtBgrRcNJaH7I23K5d QLe8I0OXSHl9tt4E0bhWW8VEhebRtzPhtvf9ZE0A= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-43440: net/mana: Null service_wq on setup error to prevent double destroy Date: Fri, 8 May 2026 16:22:49 +0200 Message-ID: <2026050854-CVE-2026-43440-e11e@gregkh> X-Mailer: git-send-email 2.54.0 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=2098; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=CT7W8wNT5Ffsn6puzWGTq60l481nhbhtwcF0V7+MRpI=; b=owGbwMvMwCRo6H6F97bub03G02pJDJl/Pzad3pV+NfcXT2KLpYSFynKDli33Jyv1XVm3euLrN FFWH6uGjlgWBkEmBlkxRZYv23iO7q84pOhlaHsaZg4rE8gQBi5OAZgI3x+G+Wl75fe9qejlOq30 ItBCgf+hxtoDfAzzM5f+NbvHtFzr193la7j5nU99ehtZAwA= 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: net/mana: Null service_wq on setup error to prevent double destroy In mana_gd_setup() error path, set gc->service_wq to NULL after destroy_workqueue() to match the cleanup in mana_gd_cleanup(). This prevents a use-after-free if the workqueue pointer is checked after a failed setup. The Linux kernel CVE team has assigned CVE-2026-43440 to this issue. Affected and fixed versions =========================== Issue introduced in 6.18.16 with commit fa3c2f8d9152344a478abb847081c1b5f84a94f5 and fixed in 6.18.19 with commit 59489ce60d7412ed82fb1d8002faa3102dcd4916 Issue introduced in 6.19.6 with commit a9a7c3203fdc4d4a8d8a7a3b1ed05d2bb4c6e77e and fixed in 6.19.9 with commit 6c92392602b451e3869f15ab685f8f650e942b13 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-2026-43440 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/net/ethernet/microsoft/mana/gdma_main.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/59489ce60d7412ed82fb1d8002faa3102dcd4916 https://git.kernel.org/stable/c/6c92392602b451e3869f15ab685f8f650e942b13 https://git.kernel.org/stable/c/87c2302813abc55c46485711a678e3c312b00666