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 F291139F174 for ; Sat, 22 Aug 2026 15:35:20 +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=1787412922; cv=none; b=H5083SbWLUCP1M2jDe8iu88deaabLdue5D36n6u1NtU8EXYj4v9vbRDiRkoPqO44nYIJdLLNrc2AC/uRyemDoafBVTNiPDoAnpqirCxpsdPX+tBGuINKZQcT/bG54Q6rT09K7le3YS+yci39u9fj+c7Y9QE4MczoYFN/mvmAZAo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787412922; c=relaxed/simple; bh=Uao1zitPurlglLYv6JqvIKG3ARQu87VmHcNRb+ij6W4=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=LnBUvzu/acqm1dDL8Iz/wqjyP1yp4gm5Fnsc8L5rRUl9hsQssC62r7tGUkf4iNIPY6Wb08LQsjeF3U6XpBYLRc1Gfke+8F7dPk4ol0MzaX8ykNkVDajXKd7JQZeFYxKpVP+eZ/OwYJP5x79R026AdOfnNcMxbk3VTgdRfKni1So= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=rjsD0nSm; 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="rjsD0nSm" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 011491F000E9; Sat, 22 Aug 2026 15:35:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1787412920; bh=UdXlhNtdRgY2n+CE3JHpNY+OhGU4uYMYOOMw2aZi+f4=; h=From:To:Cc:Subject:Date:Reply-To; b=rjsD0nSmetTSWGhDAId6br70Uxjx/UTEM2paBEe0R/UNhyOYtF8ZkQVnCm6bHgk3u odNLLyIDTvyLJqPNM6koU3kjGJAmH6tozOKlQjRrm1+oaT6RJt48QCMEVR5wVSTlxO QsOQ7U4eyihsxiAv3VFpeQu9bT1XKUETii3HoONw= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-74629: net/dibs: Correct freeing of dmb_clientid_arr Date: Sat, 22 Aug 2026 17:31:53 +0200 Message-ID: <2026082221-CVE-2026-74629-6db1@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=2467; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=FXd0fUganaA7jjES+gxkQupabIHQq8JYB7GuseimlqQ=; b=owGbwMvMwCRo6H6F97bub03G02pJDFmdB0423kg1TTm2hn/B5z9/V0sdXZ7ueTd32pty/TQH3 khH/tKlHbEsDIJMDLJiiixftvEc3V9xSNHL0PY0zBxWJpAhDFycAjARKSuGBdP/Tr7y50df+fbg 9TnMapH/puyWL2FYsLltKs+MFY/36rbXivLNeXSoTMqyDAA= 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/dibs: Correct freeing of dmb_clientid_arr A dibs device interrupt handler can be active after dibs_dev_del() and may still access dmb_clientid_arr. (UAF) In case of a failure in dibs_dev_add() being called by dibs_lo_dev_probe() dmb_clientid_arr is freed twice (double free). Free dmb_clientid_arr in dibs_dev_release() after last reference is gone. Note that allocating in dibs_dev_add() instead of dibs_dev_alloc() is ok for now, because no dmbs can be registered before dibs_dev_add(). The Linux kernel CVE team has assigned CVE-2026-74629 to this issue. Affected and fixed versions =========================== Issue introduced in 6.18 with commit cc21191b584c6f7836b0f10774f8278b7cbfba10 and fixed in 6.18.45 with commit ece6426b61241e9bfb41aa131f235168f55229b1 Issue introduced in 6.18 with commit cc21191b584c6f7836b0f10774f8278b7cbfba10 and fixed in 7.1.9 with commit 7a1df20a8d2cc89e3a442b6e0b43b1cacde8d403 Issue introduced in 6.18 with commit cc21191b584c6f7836b0f10774f8278b7cbfba10 and fixed in 7.2 with commit 9e6869be49064915edb6c8776b27c376cfdb0df5 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-2026-74629 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/dibs/dibs_loopback.c drivers/dibs/dibs_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/ece6426b61241e9bfb41aa131f235168f55229b1 https://git.kernel.org/stable/c/7a1df20a8d2cc89e3a442b6e0b43b1cacde8d403 https://git.kernel.org/stable/c/9e6869be49064915edb6c8776b27c376cfdb0df5