CVE-2022-48964 (GCVE-0-2022-48964)

Vulnerability from cvelistv5 – Published: 2024-10-21 20:05 – Updated: 2026-08-05 08:53
VLAI
Title
ravb: Fix potential use-after-free in ravb_rx_gbeth()
Summary
In the Linux kernel, the following vulnerability has been resolved: ravb: Fix potential use-after-free in ravb_rx_gbeth() The skb is delivered to napi_gro_receive() which may free it, after calling this, dereferencing skb may trigger use-after-free.
Severity
8.8 (High)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-10-22 13:19 UTC
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6649 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 1c59eb678cbd8d322d06d3a5514d36e8e1a4e84c , < e63c681494dcc0527c625a0a4f59bf10259f5ee0 (git)
Affected: 1c59eb678cbd8d322d06d3a5514d36e8e1a4e84c , < 5a5a3e564de6a8db987410c5c2f4748d50ea82b8 (git)
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Linux Linux Affected: 5.16
Unaffected: 0 , < 5.16 (semver)
Unaffected: 6.0.13 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)
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      "initial_release_date": "2024-10-22T14:23:11Z",
      "product_status:known_affected": "0",
      "product_status:known_not_affected": "488",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-48964",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2024/cve-2022-48964.json",
      "version": "20"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2022-48964",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2024-10-22T13:19:59.511376Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2024-10-22T13:20:02.707Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Linux",
              "programFiles": [
                "drivers/net/ethernet/renesas/ravb_main.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "lessThan": "e63c681494dcc0527c625a0a4f59bf10259f5ee0",
                  "status": "affected",
                  "version": "1c59eb678cbd8d322d06d3a5514d36e8e1a4e84c",
                  "versionType": "git"
                },
                {
                  "lessThan": "5a5a3e564de6a8db987410c5c2f4748d50ea82b8",
                  "status": "affected",
                  "version": "1c59eb678cbd8d322d06d3a5514d36e8e1a4e84c",
                  "versionType": "git"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "drivers/net/ethernet/renesas/ravb_main.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "5.16"
                },
                {
                  "lessThan": "5.16",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.0.*",
                  "status": "unaffected",
                  "version": "6.0.13",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "6.1",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.0.13",
                      "versionStartIncluding": "5.16",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.1",
                      "versionStartIncluding": "5.16",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "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": {
                "baseScore": 8.8,
                "baseSeverity": "HIGH",
                "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "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 \u003e 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-\u003erx_1st_skb-\u003elen read; no attacker-uncontrollable race or rare config is required.\nPR:N - Frame delivery runs in softirq/NAPI (ravb_interrupt \u2192 ravb_poll \u2192 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-\u003elen 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."
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-08-05T08:53:10.905Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "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()",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2022-48964",
        "datePublished": "2024-10-21T20:05:47.835Z",
        "dateReserved": "2024-08-22T01:27:53.628Z",
        "dateUpdated": "2026-08-05T08:53:10.905Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Sightings

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Nomenclature

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Vulnerability timeline

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