github - ghsa-75vm-7626-f557

GHSA-75VM-7626-F557

Vulnerability from github – Published: 2024-10-21 21:30 – Updated: 2024-10-24 21:31

Details

In the Linux kernel, the following vulnerability has been resolved:

libbpf: Handle size overflow for ringbuf mmap

The maximum size of ringbuf is 2GB on x86-64 host, so 2 * max_entries will overflow u32 when mapping producer page and data pages. Only casting max_entries to size_t is not enough, because for 32-bits application on 64-bits kernel the size of read-only mmap region also could overflow size_t.

So fixing it by casting the size of read-only mmap region into a __u64 and checking whether or not there will be overflow during mmap.

Severity ?

7.8 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2022-49030"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-190"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-10-21T20:15:13Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nlibbpf: Handle size overflow for ringbuf mmap\n\nThe maximum size of ringbuf is 2GB on x86-64 host, so 2 * max_entries\nwill overflow u32 when mapping producer page and data pages. Only\ncasting max_entries to size_t is not enough, because for 32-bits\napplication on 64-bits kernel the size of read-only mmap region\nalso could overflow size_t.\n\nSo fixing it by casting the size of read-only mmap region into a __u64\nand checking whether or not there will be overflow during mmap.",
  "id": "GHSA-75vm-7626-f557",
  "modified": "2024-10-24T21:31:02Z",
  "published": "2024-10-21T21:30:52Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49030"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0140e079a42064680394fff1199a7b5483688dec"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/535a25ab4f9a45f74ba38ab71de95e97474922ed"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8a549ab6724520aa3c07f47e0eba820293551490"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/927cbb478adf917e0a142b94baa37f06279cc466"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2022-49030 (GCVE-0-2022-49030)

Vulnerability from cvelistv5 – Published: 2024-10-21 20:06 – Updated: 2025-05-04 08:28

Summary

In the Linux kernel, the following vulnerability has been resolved: libbpf: Handle size overflow for ringbuf mmap The maximum size of ringbuf is 2GB on x86-64 host, so 2 * max_entries will overflow u32 when mapping producer page and data pages. Only casting max_entries to size_t is not enough, because for 32-bits application on 64-bits kernel the size of read-only mmap region also could overflow size_t. So fixing it by casting the size of read-only mmap region into a __u64 and checking whether or not there will be overflow during mmap.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/8a549ab6724520aa3…
	https://git.kernel.org/stable/c/0140e079a42064680…
	https://git.kernel.org/stable/c/535a25ab4f9a45f74…
	https://git.kernel.org/stable/c/927cbb478adf917e0…

Impacted products

Vendor

Product

Version

Linux

Affected: bf99c936f9478a05d51e9f101f90de70bee9a89c , < 8a549ab6724520aa3c07f47e0eba820293551490 (git)
Affected: bf99c936f9478a05d51e9f101f90de70bee9a89c , < 0140e079a42064680394fff1199a7b5483688dec (git)
Affected: bf99c936f9478a05d51e9f101f90de70bee9a89c , < 535a25ab4f9a45f74ba38ab71de95e97474922ed (git)
Affected: bf99c936f9478a05d51e9f101f90de70bee9a89c , < 927cbb478adf917e0a142b94baa37f06279cc466 (git)

Linux

Affected: 5.8
Unaffected: 0 , < 5.8 (semver)
Unaffected: 5.10.158 , ≤ 5.10.* (semver)
Unaffected: 5.15.82 , ≤ 5.15.* (semver)
Unaffected: 6.0.12 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2022-49030",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-10-22T13:11:21.316890Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-10-22T13:18:35.905Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "tools/lib/bpf/ringbuf.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "8a549ab6724520aa3c07f47e0eba820293551490",
              "status": "affected",
              "version": "bf99c936f9478a05d51e9f101f90de70bee9a89c",
              "versionType": "git"
            },
            {
              "lessThan": "0140e079a42064680394fff1199a7b5483688dec",
              "status": "affected",
              "version": "bf99c936f9478a05d51e9f101f90de70bee9a89c",
              "versionType": "git"
            },
            {
              "lessThan": "535a25ab4f9a45f74ba38ab71de95e97474922ed",
              "status": "affected",
              "version": "bf99c936f9478a05d51e9f101f90de70bee9a89c",
              "versionType": "git"
            },
            {
              "lessThan": "927cbb478adf917e0a142b94baa37f06279cc466",
              "status": "affected",
              "version": "bf99c936f9478a05d51e9f101f90de70bee9a89c",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "tools/lib/bpf/ringbuf.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.8"
            },
            {
              "lessThan": "5.8",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.158",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.82",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.12",
              "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": "5.10.158",
                  "versionStartIncluding": "5.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.82",
                  "versionStartIncluding": "5.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0.12",
                  "versionStartIncluding": "5.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1",
                  "versionStartIncluding": "5.8",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nlibbpf: Handle size overflow for ringbuf mmap\n\nThe maximum size of ringbuf is 2GB on x86-64 host, so 2 * max_entries\nwill overflow u32 when mapping producer page and data pages. Only\ncasting max_entries to size_t is not enough, because for 32-bits\napplication on 64-bits kernel the size of read-only mmap region\nalso could overflow size_t.\n\nSo fixing it by casting the size of read-only mmap region into a __u64\nand checking whether or not there will be overflow during mmap."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T08:28:25.737Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/8a549ab6724520aa3c07f47e0eba820293551490"
        },
        {
          "url": "https://git.kernel.org/stable/c/0140e079a42064680394fff1199a7b5483688dec"
        },
        {
          "url": "https://git.kernel.org/stable/c/535a25ab4f9a45f74ba38ab71de95e97474922ed"
        },
        {
          "url": "https://git.kernel.org/stable/c/927cbb478adf917e0a142b94baa37f06279cc466"
        }
      ],
      "title": "libbpf: Handle size overflow for ringbuf mmap",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49030",
    "datePublished": "2024-10-21T20:06:34.571Z",
    "dateReserved": "2024-08-22T01:27:53.651Z",
    "dateUpdated": "2025-05-04T08:28:25.737Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-75VM-7626-F557

CVE-2022-49030 (GCVE-0-2022-49030)

Tags

Sightings

Nomenclature