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 1D4713655E0 for ; Sat, 15 Aug 2026 06:17:51 +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=1786774672; cv=none; b=SJMuikCiHpMpOwsZVG5fKnCnrO/ZuH9GioS7TbgMQ+emx3RJX5fEZQCthBqshsiW25d+ik6VzwHX8aXEpMeOtUZL3Oo32TMzpv/Oiy41kkp1bD9OJXEgddQSuvFDgTRfBYEkDPhyasmi5sj2V0SZ5Q6QU7+jm30A0PQqTET3Jiw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786774672; c=relaxed/simple; bh=R9JZkirS2wvWW6FxXKbfcjgGdJSLRPP28EC/ZP4OdvA=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=dH1ELlPU8zCVzrbe/iixtwxftdt3PpimuaRHhO7QG6yANGBvunG9slN8zo63KTKELq6HLwEE4Q60MMUTL/szDla4kt71WXMCwTAmSmtOq2Sycy9f5V8H/8DdcnaaPXyBJdLKVfeJevpL5GG/5IzjG36KdEveEdSrNJSGRv+AzmQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=GoJcopvy; 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="GoJcopvy" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 765651F000E9; Sat, 15 Aug 2026 06:17:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1786774671; bh=QAEbu9hq/rsDitixA2duSxBSbCoz0x175HBkYvjAV0U=; h=From:To:Cc:Subject:Date:Reply-To; b=GoJcopvyi3itd2gUYFS+O+Ay8EHnygr/NnqJF9ftu1lBm/3enHw1D7oO9ZW2ZuLhl yvcl7gEuWAhGpkX9LIgbv9OfHinlkNu5uTkWkgNmp9M3P7gDUMojsiXQTkCMW3WPFd lRnMkIMbz1pXIDAptfQyXk4U2n3Ourjrge3l5lr8= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-72234: batman-adv: access unicast_ttvn skb->data only after skb realloc Date: Sat, 15 Aug 2026 15:05:13 +0900 Message-ID: <2026081550-CVE-2026-72234-598a@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=3435; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=eHZfAT4MKNEdny51dETjBbV0arKcRoCF5yT2ID+PzHI=; b=owGbwMvMwCRo6H6F97bub03G02pJDFkNDOdm/3dUqd/C9HC+7JW7Zk0/xB9XqWhezfxqWhZ3Z Mv6gw4yHbEsDIJMDLJiiixftvEc3V9xSNHL0PY0zBxWJpAhDFycAjCRtVoMC7Yv2++4X65KRyAk K2xa1dQYs3e+HQwL+ib6T1wS/TRK4O3vdxo8s3hiZ2u9AAA= 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: batman-adv: access unicast_ttvn skb->data only after skb realloc The pskb_may_pull() called by batadv_get_vid() could reallocate the buffer behind the skb. Variables which were pointing to the old buffer need to be reassigned to avoid an use-after-free. This was done correctly for the ethernet header but missed for the unicast_packet pointer. The Linux kernel CVE team has assigned CVE-2026-72234 to this issue. Affected and fixed versions =========================== Issue introduced in 3.13 with commit c018ad3de61a1dc4194879a53e5559e094aa7b1a and fixed in 5.10.261 with commit aa9558af859934f24717d4bab97d61004f91a736 Issue introduced in 3.13 with commit c018ad3de61a1dc4194879a53e5559e094aa7b1a and fixed in 5.15.212 with commit 9c2c05629e46c1fd43931506d41c56a885a98eb4 Issue introduced in 3.13 with commit c018ad3de61a1dc4194879a53e5559e094aa7b1a and fixed in 6.1.178 with commit 7b162b36de750565404cd3b98315706622c6974f Issue introduced in 3.13 with commit c018ad3de61a1dc4194879a53e5559e094aa7b1a and fixed in 6.6.145 with commit ed90eb5c68420cdfe67ec1f773324198d2ef6f50 Issue introduced in 3.13 with commit c018ad3de61a1dc4194879a53e5559e094aa7b1a and fixed in 6.12.97 with commit 979175834a699ccc3c4c0b0ba60ecae0f135a587 Issue introduced in 3.13 with commit c018ad3de61a1dc4194879a53e5559e094aa7b1a and fixed in 6.18.40 with commit b8afcf799b2cc92c41beebd029e53ed18960184a Issue introduced in 3.13 with commit c018ad3de61a1dc4194879a53e5559e094aa7b1a and fixed in 7.1.5 with commit 9a7b7248798123efbd5fafe58461d57c7cc718af Issue introduced in 3.13 with commit c018ad3de61a1dc4194879a53e5559e094aa7b1a and fixed in 7.2-rc2 with commit 7141990add3f75436f2933cb310654cad3b1e3e9 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-2026-72234 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: net/batman-adv/routing.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/aa9558af859934f24717d4bab97d61004f91a736 https://git.kernel.org/stable/c/9c2c05629e46c1fd43931506d41c56a885a98eb4 https://git.kernel.org/stable/c/7b162b36de750565404cd3b98315706622c6974f https://git.kernel.org/stable/c/ed90eb5c68420cdfe67ec1f773324198d2ef6f50 https://git.kernel.org/stable/c/979175834a699ccc3c4c0b0ba60ecae0f135a587 https://git.kernel.org/stable/c/b8afcf799b2cc92c41beebd029e53ed18960184a https://git.kernel.org/stable/c/9a7b7248798123efbd5fafe58461d57c7cc718af https://git.kernel.org/stable/c/7141990add3f75436f2933cb310654cad3b1e3e9