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Even before the skb is transmitted, the\ntun_xdp_one-->eth_type_trans() may access the Ethernet header although it\ncan be less than ETH_HLEN. Once transmitted, this could either cause\nout-of-bound access beyond the actual length, or confuse the underlayer\nwith incorrect or inconsistent header length in the skb metadata.\n\nIn the alternative path, tun_get_user() already prohibits short frame which\nhas the length less than Ethernet header size from being transmitted for\nIFF_TAP.\n\nThis is to drop any frame shorter than the Ethernet header size just like\nhow tun_get_user() does.\n\nCVE: CVE-2024-41091"}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-09-15T17:52:15.685Z"}}}, "cveMetadata": {"cveId": "CVE-2024-41091", "state": "PUBLISHED", "dateUpdated": "2024-09-15T17:52:15.685Z", "dateReserved": "2024-07-12T12:17:45.636Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-07-29T06:18:12.019Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntun: add missing verification for short frame\n\nThe cited commit missed to check against the validity of the frame length\nin the tun_xdp_one() path, which could cause a corrupted skb to be sent\ndownstack. Even before the skb is transmitted, the\ntun_xdp_one-->eth_type_trans() may access the Ethernet header although it\ncan be less than ETH_HLEN. Once transmitted, this could either cause\nout-of-bound access beyond the actual length, or confuse the underlayer\nwith incorrect or inconsistent header length in the skb metadata.\n\nIn the alternative path, tun_get_user() already prohibits short frame which\nhas the length less than Ethernet header size from being transmitted for\nIFF_TAP.\n\nThis is to drop any frame shorter than the Ethernet header size just like\nhow tun_get_user() does.\n\nCVE: CVE-2024-41091"}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: tun: agrega verificaci\u00f3n faltante para marcos cortos La confirmaci\u00f3n citada no pudo verificar la validez de la longitud del marco en la ruta tun_xdp_one(), lo que podr\u00eda provocar que un skb da\u00f1ado se env\u00ede hacia abajo. Incluso antes de que se transmita el skb, tun_xdp_one-->eth_type_trans() puede acceder al encabezado de Ethernet aunque puede ser menor que ETH_HLEN. Una vez transmitido, esto podr\u00eda provocar un acceso fuera de los l\u00edmites m\u00e1s all\u00e1 de la longitud real o confundir la capa subyacente con una longitud de encabezado incorrecta o inconsistente en los metadatos de skb. En la ruta alternativa, tun_get_user() ya proh\u00edbe la transmisi\u00f3n de tramas cortas que tengan una longitud menor que el tama\u00f1o del encabezado Ethernet para IFF_TAP. Esto es para eliminar cualquier trama m\u00e1s corta que el tama\u00f1o del encabezado de Ethernet tal como lo hace tun_get_user(). CVE: CVE-2024-41091"}], "id": "CVE-2024-41091", "lastModified": "2024-07-29T14:12:08.783", "metrics": {}, "published": "2024-07-29T07:15:07.553", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/049584807f1d797fc3078b68035450a9769eb5c3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/32b0aaba5dbc85816898167d9b5d45a22eae82e9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/589382f50b4a5d90d16d8bc9dcbc0e927a3e39b2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6100e0237204890269e3f934acfc50d35fd6f319"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8418f55302fa1d2eeb73e16e345167e545c598a5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a9d1c27e2ee3b0ea5d40c105d6e728fc114470bb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ad6b3f622ccfb4bfedfa53b6ebd91c3d1d04f146"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d5ad89b7d01ed4e66fd04734fc63d6e78536692a"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

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{"advisory": "RHSA-2024:6663", "cpe": "cpe:/o:redhat:rhel_e4s:8.4", "package": "kpatch-patch", "product_name": "Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions", "release_date": "2024-09-12T00:00:00Z"}, {"advisory": "RHSA-2024:5281", "cpe": "cpe:/o:redhat:rhel_aus:8.6", "package": "kernel-0:4.18.0-372.118.1.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support", "release_date": "2024-08-13T00:00:00Z"}, {"advisory": "RHSA-2024:5281", "cpe": "cpe:/o:redhat:rhel_tus:8.6", "package": "kernel-0:4.18.0-372.118.1.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Telecommunications Update Service", "release_date": "2024-08-13T00:00:00Z"}, {"advisory": "RHSA-2024:5281", "cpe": "cpe:/o:redhat:rhel_e4s:8.6", "package": "kernel-0:4.18.0-372.118.1.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions", "release_date": "2024-08-13T00:00:00Z"}, {"advisory": "RHSA-2024:5582", "cpe": 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"kernel-0:5.14.0-284.80.1.el9_2", "product_name": "Red Hat Enterprise Linux 9.2 Extended Update Support", "release_date": "2024-08-21T00:00:00Z"}, {"advisory": "RHSA-2024:5673", "cpe": "cpe:/a:redhat:rhel_eus:9.2::nfv", "package": "kernel-rt-0:5.14.0-284.80.1.rt14.365.el9_2", "product_name": "Red Hat Enterprise Linux 9.2 Extended Update Support", "release_date": "2024-08-21T00:00:00Z"}, {"advisory": "RHSA-2024:6313", "cpe": "cpe:/o:redhat:rhel_eus:9.2", "package": "kpatch-patch", "product_name": "Red Hat Enterprise Linux 9.2 Extended Update Support", "release_date": "2024-09-04T00:00:00Z"}], "bugzilla": {"description": "kernel: virtio-net: tun: mlx5_core short frame denial of service", "id": "2299336", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2299336"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.1", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-20", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ntun: add missing verification for short frame\nThe cited commit missed to check against the validity of the frame length\nin the tun_xdp_one() path, which could cause a corrupted skb to be sent\ndownstack. Even before the skb is transmitted, the\ntun_xdp_one-->eth_type_trans() may access the Ethernet header although it\ncan be less than ETH_HLEN. Once transmitted, this could either cause\nout-of-bound access beyond the actual length, or confuse the underlayer\nwith incorrect or inconsistent header length in the skb metadata.\nIn the alternative path, tun_get_user() already prohibits short frame which\nhas the length less than Ethernet header size from being transmitted for\nIFF_TAP.\nThis is to drop any frame shorter than the Ethernet header size just like\nhow tun_get_user() does.\nCVE: CVE-2024-41091", "A denial of service (DoS) attack was found in the mlx5 driver in the Linux kernel. A KVM guest VM using virtio-net can crash the host by sending a short packet, for example, size < ETH_HLEN. The packet may traverse through vhost-net, macvtap, and vlan without any validation or drop. When this packet is presented to the mlx5 driver on the host side, the kernel panic happens since mlx5_core assumes the frame size is always >= ETH_HLEN."], "name": "CVE-2024-41091", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-07-24T17:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-41091\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-41091\nhttps://lore.kernel.org/linux-cve-announce/2024072918-CVE-2024-41091-35b7@gregkh\nhttps://www.openwall.com/lists/oss-security/2024/07/24/4"], "threat_severity": "Important"}