{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2022-48964",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2024-08-22T01:27:53.628Z",
        "datePublished": "2024-10-21T20:05:47.835Z",
        "dateUpdated": "2026-08-05T08:53:10.905Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-05T08:53:10.905Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nravb: Fix potential use-after-free in ravb_rx_gbeth()\n\nThe skb is delivered to napi_gro_receive() which may free it, after calling this,\ndereferencing skb may trigger use-after-free."
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                        "baseScore": 8.8,
                        "baseSeverity": "HIGH"
                    },
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "AV:A - The UAF is in ravb_rx_gbeth() on the Renesas RZ/G2L GBETH Ethernet RX NAPI path, reached only when multi-descriptor frames (DT_FEND, frames > GBETH_RX_DESC_DATA_SIZE/4080 bytes) arrive on the L2 segment; an attacker must be on the same LAN/broadcast domain to inject those jumbo frames, matching Adjacent scoring for Ethernet NIC RX UAFs (e.g. CVE-2022-48962).\nAC:L - An adjacent peer can send jumbo frames (hardware RFLR always accepts up to ~8K on gbeth) and burst same-flow segments so napi_gro_receive() returns GRO_MERGED_FREE and frees the skb before the immediate priv->rx_1st_skb->len read; no attacker-uncontrollable race or rare config is required.\nPR:N - Frame delivery runs in softirq/NAPI (ravb_interrupt → ravb_poll → ravb_rx_gbeth) with no host authentication or capability check; any unauthenticated peer that can put Ethernet frames on the wire triggers the path.\nUI:N - RX interrupt and NAPI processing run automatically once the interface is up; no victim action such as opening a file or confirming a prompt is required.\nS:U - The use-after-free corrupts host-kernel sk_buff heap state within the same OS security authority and does not cross a VM, IOMMU, or sandbox boundary.\nC:H - This is a heap use-after-free of an sk_buff after napi_gro_receive may free it; reclaiming the slab object enables disclosure of reused kernel memory via the dangling skb->len read, scored High per UAF guidance.\nI:H - sk_buff use-after-free in a general-purpose slab is a classic heap-grooming primitive that can yield attacker-controlled object reuse and control-flow hijacking, so integrity impact is High per kernel UAF scoring guidance.\nA:H - Dereferencing a freed sk_buff can oops/panic the kernel, and an adjacent attacker can repeatedly inject jumbo frames to crash the host at will."
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/ethernet/renesas/ravb_main.c"
                    ],
                    "versions": [
                        {
                            "version": "1c59eb678cbd8d322d06d3a5514d36e8e1a4e84c",
                            "lessThan": "e63c681494dcc0527c625a0a4f59bf10259f5ee0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1c59eb678cbd8d322d06d3a5514d36e8e1a4e84c",
                            "lessThan": "5a5a3e564de6a8db987410c5c2f4748d50ea82b8",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
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                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/ethernet/renesas/ravb_main.c"
                    ],
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                        {
                            "version": "5.16",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.16",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.0.13",
                            "lessThanOrEqual": "6.0.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.16",
                                    "versionEndExcluding": "6.0.13"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.16",
                                    "versionEndExcluding": "6.1"
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            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/e63c681494dcc0527c625a0a4f59bf10259f5ee0"
                },
                {
                    "url": "https://git.kernel.org/stable/c/5a5a3e564de6a8db987410c5c2f4748d50ea82b8"
                }
            ],
            "title": "ravb: Fix potential use-after-free in ravb_rx_gbeth()",
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                "engine": "bippy-1.2.0"
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        "adp": [
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                "metrics": [
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                        "other": {
                            "type": "ssvc",
                            "content": {
                                "id": "CVE-2022-48964",
                                "role": "CISA Coordinator",
                                "options": [
                                    {
                                        "Exploitation": "none"
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                                        "Automatable": "no"
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                                        "Technical Impact": "partial"
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                                ],
                                "version": "2.0.3",
                                "timestamp": "2024-10-22T13:19:59.511376Z"
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                "title": "CISA ADP Vulnrichment",
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                    "dateUpdated": "2024-10-22T13:28:38.732Z"
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