Vulnerability-Lookup

GHSA-VGJG-QRH9-W8X6

Vulnerability from github – Published: 2026-05-06 12:30 – Updated: 2026-05-13 21:31

Details

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

octeontx2-af: CGX: fix bitmap leaks

The RX/TX flow-control bitmaps (rx_fc_pfvf_bmap and tx_fc_pfvf_bmap) are allocated by cgx_lmac_init() but never freed in cgx_lmac_exit(). Unbinding and rebinding the driver therefore triggers kmemleak:

unreferenced object (size 16):
    backtrace:
      rvu_alloc_bitmap
      cgx_probe

Free both bitmaps during teardown.

Severity ?

5.5 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-43157"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-401"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-06T12:16:33Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nocteontx2-af: CGX: fix bitmap leaks\n\nThe RX/TX flow-control bitmaps (rx_fc_pfvf_bmap and tx_fc_pfvf_bmap)\nare allocated by cgx_lmac_init() but never freed in cgx_lmac_exit().\nUnbinding and rebinding the driver therefore triggers kmemleak:\n\n    unreferenced object (size 16):\n        backtrace:\n          rvu_alloc_bitmap\n          cgx_probe\n\nFree both bitmaps during teardown.",
  "id": "GHSA-vgjg-qrh9-w8x6",
  "modified": "2026-05-13T21:31:58Z",
  "published": "2026-05-06T12:30:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43157"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/013ac469596a0b8671e62d89c89ae0bd46bbe667"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3def995c4ede842adf509c410e92d09a0cedc965"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6d389382ee655128056fbdab86baad8495ffbf33"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ad8a13a45c5c24d0d32de9a1c3fd58498a675ece"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ccca14bbdcc25829d355b9f4d3249f43dadb71c1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ccef79af58b43787c25710c9da96651c6ddfe50f"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-43157 (GCVE-0-2026-43157)

Vulnerability from cvelistv5 – Published: 2026-05-06 11:27 – Updated: 2026-05-11 22:18

Title

octeontx2-af: CGX: fix bitmap leaks

Summary

In the Linux kernel, the following vulnerability has been resolved: octeontx2-af: CGX: fix bitmap leaks The RX/TX flow-control bitmaps (rx_fc_pfvf_bmap and tx_fc_pfvf_bmap) are allocated by cgx_lmac_init() but never freed in cgx_lmac_exit(). Unbinding and rebinding the driver therefore triggers kmemleak: unreferenced object (size 16): backtrace: rvu_alloc_bitmap cgx_probe Free both bitmaps during teardown.

Severity ?

No CVSS data available.

Assigner

Linux

References

6 references

URL	Tags
https://git.kernel.org/stable/c/ad8a13a45c5c24d0d…
https://git.kernel.org/stable/c/013ac469596a0b867…
https://git.kernel.org/stable/c/ccef79af58b43787c…
https://git.kernel.org/stable/c/6d389382ee6551280…
https://git.kernel.org/stable/c/ccca14bbdcc25829d…
https://git.kernel.org/stable/c/3def995c4ede842ad…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: e740003874edc13e468d19233f99787bedb4bb8e , < ad8a13a45c5c24d0d32de9a1c3fd58498a675ece (git) Affected: e740003874edc13e468d19233f99787bedb4bb8e , < 013ac469596a0b8671e62d89c89ae0bd46bbe667 (git) Affected: e740003874edc13e468d19233f99787bedb4bb8e , < ccef79af58b43787c25710c9da96651c6ddfe50f (git) Affected: e740003874edc13e468d19233f99787bedb4bb8e , < 6d389382ee655128056fbdab86baad8495ffbf33 (git) Affected: e740003874edc13e468d19233f99787bedb4bb8e , < ccca14bbdcc25829d355b9f4d3249f43dadb71c1 (git) Affected: e740003874edc13e468d19233f99787bedb4bb8e , < 3def995c4ede842adf509c410e92d09a0cedc965 (git)
Linux	Linux	Affected: 5.18 Unaffected: 0 , < 5.18 (semver) Unaffected: 6.1.165 , ≤ 6.1.* (semver) Unaffected: 6.6.128 , ≤ 6.6.* (semver) Unaffected: 6.12.75 , ≤ 6.12.* (semver) Unaffected: 6.18.16 , ≤ 6.18.* (semver) Unaffected: 6.19.6 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/marvell/octeontx2/af/cgx.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "ad8a13a45c5c24d0d32de9a1c3fd58498a675ece",
              "status": "affected",
              "version": "e740003874edc13e468d19233f99787bedb4bb8e",
              "versionType": "git"
            },
            {
              "lessThan": "013ac469596a0b8671e62d89c89ae0bd46bbe667",
              "status": "affected",
              "version": "e740003874edc13e468d19233f99787bedb4bb8e",
              "versionType": "git"
            },
            {
              "lessThan": "ccef79af58b43787c25710c9da96651c6ddfe50f",
              "status": "affected",
              "version": "e740003874edc13e468d19233f99787bedb4bb8e",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "e740003874edc13e468d19233f99787bedb4bb8e",
              "versionType": "git"
            },
            {
              "lessThan": "ccca14bbdcc25829d355b9f4d3249f43dadb71c1",
              "status": "affected",
              "version": "e740003874edc13e468d19233f99787bedb4bb8e",
              "versionType": "git"
            },
            {
              "lessThan": "3def995c4ede842adf509c410e92d09a0cedc965",
              "status": "affected",
              "version": "e740003874edc13e468d19233f99787bedb4bb8e",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/marvell/octeontx2/af/cgx.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.18"
            },
            {
              "lessThan": "5.18",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.165",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.128",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.75",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.16",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.165",
                  "versionStartIncluding": "5.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.128",
                  "versionStartIncluding": "5.18",
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                },
                {
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                  "versionEndExcluding": "6.12.75",
                  "versionStartIncluding": "5.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.16",
                  "versionStartIncluding": "5.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.6",
                  "versionStartIncluding": "5.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0",
                  "versionStartIncluding": "5.18",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocteontx2-af: CGX: fix bitmap leaks\n\nThe RX/TX flow-control bitmaps (rx_fc_pfvf_bmap and tx_fc_pfvf_bmap)\nare allocated by cgx_lmac_init() but never freed in cgx_lmac_exit().\nUnbinding and rebinding the driver therefore triggers kmemleak:\n\n    unreferenced object (size 16):\n        backtrace:\n          rvu_alloc_bitmap\n          cgx_probe\n\nFree both bitmaps during teardown."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T22:18:51.830Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ad8a13a45c5c24d0d32de9a1c3fd58498a675ece"
        },
        {
          "url": "https://git.kernel.org/stable/c/013ac469596a0b8671e62d89c89ae0bd46bbe667"
        },
        {
          "url": "https://git.kernel.org/stable/c/ccef79af58b43787c25710c9da96651c6ddfe50f"
        },
        {
          "url": "https://git.kernel.org/stable/c/6d389382ee655128056fbdab86baad8495ffbf33"
        },
        {
          "url": "https://git.kernel.org/stable/c/ccca14bbdcc25829d355b9f4d3249f43dadb71c1"
        },
        {
          "url": "https://git.kernel.org/stable/c/3def995c4ede842adf509c410e92d09a0cedc965"
        }
      ],
      "title": "octeontx2-af: CGX: fix bitmap leaks",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-43157",
    "datePublished": "2026-05-06T11:27:37.185Z",
    "dateReserved": "2026-05-01T14:12:55.990Z",
    "dateUpdated": "2026-05-11T22:18:51.830Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-VGJG-QRH9-W8X6

CVE-2026-43157 (GCVE-0-2026-43157)

Tags

Sightings

Nomenclature