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                "id": "CVE-2021-47148",
                "options": [
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                  },
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                    "Automatable": "no"
                  },
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                "timestamp": "2024-06-26T20:36:23.128673Z",
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          "shortName": "CISA-ADP"
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        "title": "CISA ADP Vulnrichment"
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          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        ],
        "title": "CVE Program Container"
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    "cna": {
      "affected": [
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          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c"
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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              "version": "5.12.9",
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              "version": "5.13",
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocteontx2-pf: fix a buffer overflow in otx2_set_rxfh_context()\n\nThis function is called from ethtool_set_rxfh() and \"*rss_context\"\ncomes from the user.  Add some bounds checking to prevent memory\ncorruption."
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            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
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              "value": "AV:L - The vulnerable path is reached only through a local SIOCETHTOOL ioctl (ETHTOOL_SRSSH \u2192 ethtool_set_rxfh \u2192 otx2_set_rxfh_context); it is not triggered by received network packets or a remote service.\nAC:L - The attacker fully controls the rss_context u32 from userspace and can reliably pass an out-of-bounds value; no race or external conditions beyond the attacker\u0027s control are required to hit the overflow.\nPR:L - ETHTOOL_SRSSH requires CAP_NET_ADMIN via ns_capable(net-\u003euser_ns, CAP_NET_ADMIN), which is obtainable without real init-namespace root when an octeontx2 PF/VF is present in a userns-owned netns (common SR-IOV/container deployments), so privileges are Low under kernel CNA guidance.\nUI:N - No victim action is required; the attacker issues the ethtool ioctl directly once they have local access and the needed capability.\nS:U - The corruption occurs in the host/guest kernel driver and elevates impact only within that same kernel security authority; it is not a VM escape or IOMMU/DMA boundary bypass.\nC:H - A user-controlled index into rss_ctx[] performs an out-of-bounds pointer load and can be paired with write/free primitives, which per guidance for memory corruption is treated as enabling high confidentiality impact.\nI:H - With an OOB context the code writes attacker-influenced indir bytes through the fetched pointer and can kfree an OOB pointer on delete, giving classic out-of-bounds write / arbitrary-free integrity compromise.\nA:H - Invalid pointer dereference or free from the out-of-bounds rss_ctx access can oops/panic the kernel, so availability impact is High."
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          "url": "https://git.kernel.org/stable/c/e5cc361e21648b75f935f9571d4003aaee480214"
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      "title": "octeontx2-pf: fix a buffer overflow in otx2_set_rxfh_context()",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2021-47148",
    "datePublished": "2024-03-25T09:07:44.472Z",
    "dateReserved": "2024-03-04T18:12:48.845Z",
    "dateUpdated": "2026-08-05T08:46:19.658Z",
    "state": "PUBLISHED"
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