Vulnerability-Lookup

FKIE_CVE-2022-48932

Vulnerability from fkie_nvd - Published: 2024-08-22 04:15 - Updated: 2026-08-04 10:17

Severity

7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: net/mlx5: DR, Fix slab-out-of-bounds in mlx5_cmd_dr_create_fte When adding a rule with 32 destinations, we hit the following out-of-band access issue: BUG: KASAN: slab-out-of-bounds in mlx5_cmd_dr_create_fte+0x18ee/0x1e70 This patch fixes the issue by both increasing the allocated buffers to accommodate for the needed actions and by checking the number of actions to prevent this issue when a rule with too many actions is provided.

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/0aec12d97b2036af0946e3d582144739860ac07b	Patch
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/4ad319cdfbe555b4ff67bc608736c46a6930c848	Patch

Impacted products

	Vendor	Product	Version
	linux	linux_kernel	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/mellanox/mlx5/core/steering/fs_dr.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "4ad319cdfbe555b4ff67bc608736c46a6930c848",
              "status": "affected",
              "version": "1ffd498901c1134a7cbecf5409e12c064c39cef9",
              "versionType": "git"
            },
            {
              "lessThan": "0aec12d97b2036af0946e3d582144739860ac07b",
              "status": "affected",
              "version": "1ffd498901c1134a7cbecf5409e12c064c39cef9",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/mellanox/mlx5/core/steering/fs_dr.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": "5.16.*",
              "status": "unaffected",
              "version": "5.16.12",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.17",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "C76BAB21-7F23-4AD8-A25F-CA7B262A2698",
              "versionEndExcluding": "5.16.12",
              "versionStartIncluding": "5.16",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: DR, Fix slab-out-of-bounds in mlx5_cmd_dr_create_fte\n\nWhen adding a rule with 32 destinations, we hit the following out-of-band\naccess issue:\n\n  BUG: KASAN: slab-out-of-bounds in mlx5_cmd_dr_create_fte+0x18ee/0x1e70\n\nThis patch fixes the issue by both increasing the allocated buffers to\naccommodate for the needed actions and by checking the number of actions\nto prevent this issue when a rule with too many actions is provided."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: net/mlx5: DR, corrigi\u00f3 slab-out-of-bounds en mlx5_cmd_dr_create_fte Al agregar una regla con 32 destinos, encontramos el siguiente problema de acceso fuera de banda: ERROR: KASAN: slab-out-of-bounds en mlx5_cmd_dr_create_fte+0x18ee/0x1e70 Este parche soluciona el problema aumentando los b\u00faferes asignados para acomodar las acciones necesarias y verificando la cantidad de acciones para evitar este problema cuando una regla con demasiadas acciones se proporciona."
    }
  ],
  "id": "CVE-2022-48932",
  "lastModified": "2026-08-04T10:17:27.060",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2022-48932",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-09-10T15:32:46.595523Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-08-22T04:15:16.087",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/0aec12d97b2036af0946e3d582144739860ac07b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/4ad319cdfbe555b4ff67bc608736c46a6930c848"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2022-48932 (GCVE-0-2022-48932)

Vulnerability from cvelistv5 – Published: 2024-08-22 03:31 – Updated: 2026-08-05 08:52

Title

net/mlx5: DR, Fix slab-out-of-bounds in mlx5_cmd_dr_create_fte

Summary

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/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 2024-09-10 15:32 UTC

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 7018 records in the last 180 days details

References

2 references

URL	Tags
https://git.kernel.org/stable/c/4ad319cdfbe555b4f…
https://git.kernel.org/stable/c/0aec12d97b2036af0…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 1ffd498901c1134a7cbecf5409e12c064c39cef9 , < 4ad319cdfbe555b4ff67bc608736c46a6930c848 (git) Affected: 1ffd498901c1134a7cbecf5409e12c064c39cef9 , < 0aec12d97b2036af0946e3d582144739860ac07b (git)
Linux	Linux	Affected: 5.16 Unaffected: 0 , < 5.16 (semver) Unaffected: 5.16.12 , ≤ 5.16.* (semver) Unaffected: 5.17 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2022-48932",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-10T15:32:46.595523Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-09-12T17:33:09.982Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/mellanox/mlx5/core/steering/fs_dr.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "4ad319cdfbe555b4ff67bc608736c46a6930c848",
              "status": "affected",
              "version": "1ffd498901c1134a7cbecf5409e12c064c39cef9",
              "versionType": "git"
            },
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              "status": "affected",
              "version": "1ffd498901c1134a7cbecf5409e12c064c39cef9",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/mellanox/mlx5/core/steering/fs_dr.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.16"
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              "status": "unaffected",
              "version": "5.17",
              "versionType": "original_commit_for_fix"
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: DR, Fix slab-out-of-bounds in mlx5_cmd_dr_create_fte\n\nWhen adding a rule with 32 destinations, we hit the following out-of-band\naccess issue:\n\n  BUG: KASAN: slab-out-of-bounds in mlx5_cmd_dr_create_fte+0x18ee/0x1e70\n\nThis patch fixes the issue by both increasing the allocated buffers to\naccommodate for the needed actions and by checking the number of actions\nto prevent this issue when a rule with too many actions is provided."
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      "metrics": [
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          "scenarios": [
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              "value": "AV:L - The bug is reached only when installing an mlx5 FDB software-steering flow rule (TC flower offload \u2192 mlx5_eswitch_add_offloaded_rule \u2192 mlx5_add_flow_rules \u2192 mlx5_cmd_dr_create_fte) via local netlink/TC, not by processing remote packets.\nAC:L - A rule with MLX5_MAX_FLOW_FWD_VPORTS (32) mirred destinations\u2014explicitly supported and commonly paired with a flow counter\u2014deterministically overflows the 32-slot fs_dr_actions/actions arrays; the attacker fully controls the rule and needs no race or uncontrollable layout.\nPR:L - Creating the offloaded TC flower rule requires CAP_NET_ADMIN, which is available to an unprivileged user via user+network namespaces (and to containers granted NET_ADMIN on representors in typical switchdev/NFV deployments), scoring PR:L per kernel guidance for tc/CAP_NET_ADMIN.\nUI:N - The attacker installs the multi-destination TC rule themselves; no separate victim action is required beyond the host already running mlx5 eswitch offloads with SMFS.\nS:U - Impact is slab corruption inside the host kernel\u2019s mlx5 steering path under the same OS authority; this is not a VM escape, IOMMU bypass, or other cross-boundary breakout.\nC:H - The bug is a slab out-of-bounds write of an mlx5dr_action pointer past a kcalloc(32) array into adjacent kmalloc slab objects, which is memory corruption leverageable for kernel information disclosure.\nI:H - Out-of-bounds heap writes of kernel pointers corrupt adjacent slab objects and, per kernel guidance, yield arbitrary-write / control-flow hijacking primitives.\nA:H - The commit documents a KASAN slab-out-of-bounds fault in mlx5_cmd_dr_create_fte, and the resulting heap corruption can oops or panic the kernel."
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    "dateReserved": "2024-08-21T06:06:23.299Z",
    "dateUpdated": "2026-08-05T08:52:59.108Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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