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{"affected_release": [{"advisory": "RHSA-2024:4447", "cpe": "cpe:/o:redhat:rhel_aus:8.6", "package": "kernel-0:4.18.0-372.111.1.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support", "release_date": "2024-07-10T00:00:00Z"}, {"advisory": "RHSA-2024:4447", "cpe": "cpe:/o:redhat:rhel_tus:8.6", "package": "kernel-0:4.18.0-372.111.1.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Telecommunications Update Service", "release_date": "2024-07-10T00:00:00Z"}, {"advisory": "RHSA-2024:4447", "cpe": "cpe:/o:redhat:rhel_e4s:8.6", "package": "kernel-0:4.18.0-372.111.1.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions", "release_date": "2024-07-10T00:00:00Z"}], "bugzilla": {"description": "kernel: net/sched: act_skbmod: Skip non-Ethernet packets", "id": "2282504", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2282504"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.2", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L", "status": "verified"}, "cwe": "CWE-20", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnet/sched: act_skbmod: Skip non-Ethernet packets\nCurrently tcf_skbmod_act() assumes that packets use Ethernet as their L2\nprotocol, which is not always the case.  As an example, for CAN devices:\n$ ip link add dev vcan0 type vcan\n$ ip link set up vcan0\n$ tc qdisc add dev vcan0 root handle 1: htb\n$ tc filter add dev vcan0 parent 1: protocol ip prio 10 \\\nmatchall action skbmod swap mac\nDoing the above silently corrupts all the packets.  Do not perform skbmod\nactions for non-Ethernet packets."], "mitigation": {"lang": "en:us", "value": "Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible."}, "name": "CVE-2021-47293", "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": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-05-21T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-47293\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-47293\nhttps://lore.kernel.org/linux-cve-announce/2024052123-CVE-2021-47293-0cbe@gregkh/T"], "statement": "This vulnerability is classified as moderate severity due to its potential impact on packet integrity", "threat_severity": "Moderate"}