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 524D8312837 for ; Wed, 24 Jun 2026 16:34:45 +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=1782318886; cv=none; b=rbA1TDlwmU1Ykvkltcz2vbDXCEbr2AP/Jtj1fFp12uXT7qkwijn9r0AbnEG+KhGAo1GhOQAdtVum1VWNesb5Ff5Fn5Iid/cHxWULvmufjDxLZUS2qjfKM1jj4rYkm1i+Thv3XOb50Tpn6QtyPg2WBa9+7RFqssMfLwYKYi9E1bw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782318886; c=relaxed/simple; bh=APYVJd1E0Mr4Wir0Ws+NkfVrO2aKhf60aBiHWGOnQks=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=OQrgMyMBwGVtz0y1AiDEtMUYMQiLWxAriZlyK1Tp0I9oKh3WhYMbh0omTM/3zAN7aPuyLflxpq8QNjWY5woof6MwrlHK830o+bDdILG56zld+e9ryM6neDwRn8XaXo/akCT4DXu42h9w4CFLzlE9m1q6gEBMNyDn6WWiUCNkI/s= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=f/CLprB0; 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="f/CLprB0" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 99E5C1F000E9; Wed, 24 Jun 2026 16:34:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1782318885; bh=NOrMSHsi3wlUMcxQ9hB9/wn1BsOl5zdpiniyfNDcUyk=; h=From:To:Cc:Subject:Date:Reply-To; b=f/CLprB07Flk1ev3ovNG6TGzE68CGDj1jNV1nQFZtpyOjKv7WRwcxsJWNtHdJWYdD F0VKtbO+lBYziV3o3Nirvj0t57J2mCS7vg8+0BnWpvIUEvImGnfbYhOkz5VNMOUYOX JOp6emNMi7FCAPJCZ5s/b/ZqVop+K9srrL41XsXk= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-53006: ipv6: fix possible UAF in icmpv6_rcv() Date: Wed, 24 Jun 2026 17:30:30 +0100 Message-ID: <2026062448-CVE-2026-53006-2b02@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=3412; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=u7Vp9mzOwPlA7camdxqGbCKHusKD6tBnAcQwiSsM6/E=; b=owGbwMvMwCRo6H6F97bub03G02pJDFk2rH/Kn1penDrta8+b9AU/7GcypFff7b5tcUjQLsBlr pfKxqMnO2JZGASZGGTFFFm+bOM5ur/ikKKXoe1pmDmsTCBDGLg4BWAirUcZ5hcz1bl3MPql6pbH znp1KTHVKTVsAsM8O6mZn0SPBupVTktdyPnXPvR9cNhWAA== 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: ipv6: fix possible UAF in icmpv6_rcv() Caching saddr and daddr before pskb_pull() is problematic since skb->head can change. Remove these temporary variables: - We only access &ipv6_hdr(skb)->saddr and &ipv6_hdr(skb)->daddr when net_dbg_ratelimited() is called in the slow path. - Avoid potential future misuse after pskb_pull() call. The Linux kernel CVE team has assigned CVE-2026-53006 to this issue. Affected and fixed versions =========================== Issue introduced in 4.4 with commit 4b3418fba0fe819197e3359d5ddbef84ba2c59de and fixed in 5.10.258 with commit 7bff2c8fe5c35ae58bf73104f53db3676e6e5d94 Issue introduced in 4.4 with commit 4b3418fba0fe819197e3359d5ddbef84ba2c59de and fixed in 5.15.209 with commit aff0f28f5be803de2452ce702631c021fcd9ce8a Issue introduced in 4.4 with commit 4b3418fba0fe819197e3359d5ddbef84ba2c59de and fixed in 6.1.175 with commit 38bdbc897c0d83a3e2b925a51b69420f1feba29a Issue introduced in 4.4 with commit 4b3418fba0fe819197e3359d5ddbef84ba2c59de and fixed in 6.6.141 with commit 0069813e6ca9309eca78022bcb3aeb1e9ef90a12 Issue introduced in 4.4 with commit 4b3418fba0fe819197e3359d5ddbef84ba2c59de and fixed in 6.12.91 with commit 1e1f0f89ee4692a64be3f3707ff8ac1ae57b03e7 Issue introduced in 4.4 with commit 4b3418fba0fe819197e3359d5ddbef84ba2c59de and fixed in 6.18.33 with commit 7c66b368c6ff453f99cb39d84af93e908e51eef2 Issue introduced in 4.4 with commit 4b3418fba0fe819197e3359d5ddbef84ba2c59de and fixed in 7.0.10 with commit 085e31a811ef234ef8c3e219c4636dfebfe7e10f Issue introduced in 4.4 with commit 4b3418fba0fe819197e3359d5ddbef84ba2c59de and fixed in 7.1 with commit f996edd7615e686ada141b7f3395025729ff8ccb 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-2026-53006 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/ipv6/icmp.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/7bff2c8fe5c35ae58bf73104f53db3676e6e5d94 https://git.kernel.org/stable/c/aff0f28f5be803de2452ce702631c021fcd9ce8a https://git.kernel.org/stable/c/38bdbc897c0d83a3e2b925a51b69420f1feba29a https://git.kernel.org/stable/c/0069813e6ca9309eca78022bcb3aeb1e9ef90a12 https://git.kernel.org/stable/c/1e1f0f89ee4692a64be3f3707ff8ac1ae57b03e7 https://git.kernel.org/stable/c/7c66b368c6ff453f99cb39d84af93e908e51eef2 https://git.kernel.org/stable/c/085e31a811ef234ef8c3e219c4636dfebfe7e10f https://git.kernel.org/stable/c/f996edd7615e686ada141b7f3395025729ff8ccb