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 E1AAE218E81 for ; Wed, 26 Feb 2025 02:15:39 +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=1740536140; cv=none; b=BNniQvx5+liCMucDZ9Po4ZaVPVpp4k1doyc3Z/dUXJU2sz/m62VCD1WFMeSgU8Tuw0Ca4qVoZ8/Ad/dOhFzNMm4ZoBetF7bY2IJ+A7PjWfhY7895n+LMYGQJqlQt9MSmuNfYy+ajYicLp6NS/d5sw3axuY4ZkmKxI20NS+d5ud8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740536140; c=relaxed/simple; bh=YUGLVOWApr5Dy7VewOuKZAG9GFNhjHeOc+Gk7wh8mtE=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=ll51M2fldiDApzjm0sDv9RKz7hEegm8yG+kTBXoenXtyENDEBvY6W4f4x7lJT9crppu+tEFWWqodchyIX8J1OxoyvFsc6QSTHjkb+zZ568ddZwUdEG3dgh57lIqGpX0TXR2SEgY+ou4jGoORjEVyq+yuF1dSROEDujOkrLE6ok0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=OFayJ2hA; 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="OFayJ2hA" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B5578C4CEE6; Wed, 26 Feb 2025 02:15:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1740536139; bh=YUGLVOWApr5Dy7VewOuKZAG9GFNhjHeOc+Gk7wh8mtE=; h=From:To:Cc:Subject:Date:Reply-to:From; b=OFayJ2hA/reQls0l5YucirtzKxhdVRv1QegMAhfxgPwewEzjHBKZvCi4dOwFH0ekp OSdzeklFGoig4B+QGHjtrdxwrX+DI5V4FZkTybu0QJVXqZ873qEK1YG0PGDIk1oz9S n4Adr6dGWz8+/EPMiFUdn/mm9pKL3+O2ym6G8w8Q= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2022-49548: bpf: Fix potential array overflow in bpf_trampoline_get_progs() Date: Wed, 26 Feb 2025 03:13:42 +0100 Message-ID: <2025022615-CVE-2022-49548-47fe@gregkh> X-Mailer: git-send-email 2.48.1 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=2911; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=YUGLVOWApr5Dy7VewOuKZAG9GFNhjHeOc+Gk7wh8mtE=; b=owGbwMvMwCRo6H6F97bub03G02pJDOn7KthFQo88eB/M4zFb/Qf/qo7PV+Nsq/oU1NkOxq1y7 Ty3/QlbRywLgyATg6yYIsuXbTxH91ccUvQytD0NM4eVCWQIAxenAEzkDAvDPLUbJ7V57I9tei4s mih2MPf/sdS6NoYFZzqOZHmwPkh49cq1Qt7zQc2sd7+nAAA= 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: bpf: Fix potential array overflow in bpf_trampoline_get_progs() The cnt value in the 'cnt >= BPF_MAX_TRAMP_PROGS' check does not include BPF_TRAMP_MODIFY_RETURN bpf programs, so the number of the attached BPF_TRAMP_MODIFY_RETURN bpf programs in a trampoline can exceed BPF_MAX_TRAMP_PROGS. When this happens, the assignment '*progs++ = aux->prog' in bpf_trampoline_get_progs() will cause progs array overflow as the progs field in the bpf_tramp_progs struct can only hold at most BPF_MAX_TRAMP_PROGS bpf programs. The Linux kernel CVE team has assigned CVE-2022-49548 to this issue. Affected and fixed versions =========================== Issue introduced in 5.7 with commit 88fd9e5352fe05f7fe57778293aebd4cd106960b and fixed in 5.10.120 with commit 7f845de2863334bed4f362e95853f5e7bc323737 Issue introduced in 5.7 with commit 88fd9e5352fe05f7fe57778293aebd4cd106960b and fixed in 5.15.45 with commit e36452d5da6325df7c10cffc60a9e68d21e2606d Issue introduced in 5.7 with commit 88fd9e5352fe05f7fe57778293aebd4cd106960b and fixed in 5.17.13 with commit 32c4559c61652f24c9fdd5440342196fe37453bc Issue introduced in 5.7 with commit 88fd9e5352fe05f7fe57778293aebd4cd106960b and fixed in 5.18.2 with commit 4f8897bcc20b9ae44758e0572538d741ab66f0dc Issue introduced in 5.7 with commit 88fd9e5352fe05f7fe57778293aebd4cd106960b and fixed in 5.19 with commit a2aa95b71c9bbec793b5c5fa50f0a80d882b3e8d 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-2022-49548 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: kernel/bpf/trampoline.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/7f845de2863334bed4f362e95853f5e7bc323737 https://git.kernel.org/stable/c/e36452d5da6325df7c10cffc60a9e68d21e2606d https://git.kernel.org/stable/c/32c4559c61652f24c9fdd5440342196fe37453bc https://git.kernel.org/stable/c/4f8897bcc20b9ae44758e0572538d741ab66f0dc https://git.kernel.org/stable/c/a2aa95b71c9bbec793b5c5fa50f0a80d882b3e8d