Vulnerability-Lookup

GHSA-6PC7-MM64-G3V9

Vulnerability from github – Published: 2026-03-25 12:30 – Updated: 2026-03-25 12:30

Details

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

RDMA/ionic: Fix kernel stack leak in ionic_create_cq()

struct ionic_cq_resp resp { __u32 cqid[2]; // offset 0 - PARTIALLY SET (see below) __u8 udma_mask; // offset 8 - SET (resp.udma_mask = vcq->udma_mask) __u8 rsvd[7]; // offset 9 - NEVER SET <- LEAK };

rsvd[7]: 7 bytes of stack memory leaked unconditionally.

cqid[2]: The loop at line 1256 iterates over udma_idx but skips indices where !(vcq->udma_mask & BIT(udma_idx)). The array has 2 entries but udma_count could be 1, meaning cqid[1] might never be written via ionic_create_cq_common(). If udma_mask only has bit 0 set, cqid[1] (4 bytes) is also leaked. So potentially 11 bytes leaked.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-23384"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-25T11:16:38Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/ionic: Fix kernel stack leak in ionic_create_cq()\n\nstruct ionic_cq_resp resp {\n    __u32 cqid[2];         // offset 0 - PARTIALLY SET (see below)\n    __u8  udma_mask;       // offset 8 - SET (resp.udma_mask = vcq-\u003eudma_mask)\n    __u8  rsvd[7];         // offset 9 - NEVER SET \u003c- LEAK\n};\n\nrsvd[7]: 7 bytes of stack memory leaked unconditionally.\n\ncqid[2]: The loop at line 1256 iterates over udma_idx but skips indices\nwhere !(vcq-\u003eudma_mask \u0026 BIT(udma_idx)). The array has 2 entries but\nudma_count could be 1, meaning cqid[1] might never be written via\nionic_create_cq_common(). If udma_mask only has bit 0 set, cqid[1] (4\nbytes) is also leaked. So potentially 11 bytes leaked.",
  "id": "GHSA-6pc7-mm64-g3v9",
  "modified": "2026-03-25T12:30:24Z",
  "published": "2026-03-25T12:30:24Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23384"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/547d0b07ad73915b323bc21f85c5d3252bebbbcf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a6f3e0fa8e862f220c26c2f27e5ddc42eb82ad3e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/faa72102b178c7ae6c6afea23879e7c84fc59b4e"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-23384 (GCVE-0-2026-23384)

Vulnerability from cvelistv5 – Published: 2026-03-25 10:28 – Updated: 2026-03-25 10:28

Title

RDMA/ionic: Fix kernel stack leak in ionic_create_cq()

Summary

In the Linux kernel, the following vulnerability has been resolved: RDMA/ionic: Fix kernel stack leak in ionic_create_cq() struct ionic_cq_resp resp { __u32 cqid[2]; // offset 0 - PARTIALLY SET (see below) __u8 udma_mask; // offset 8 - SET (resp.udma_mask = vcq->udma_mask) __u8 rsvd[7]; // offset 9 - NEVER SET <- LEAK }; rsvd[7]: 7 bytes of stack memory leaked unconditionally. cqid[2]: The loop at line 1256 iterates over udma_idx but skips indices where !(vcq->udma_mask & BIT(udma_idx)). The array has 2 entries but udma_count could be 1, meaning cqid[1] might never be written via ionic_create_cq_common(). If udma_mask only has bit 0 set, cqid[1] (4 bytes) is also leaked. So potentially 11 bytes leaked.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/a6f3e0fa8e862f220…
	https://git.kernel.org/stable/c/547d0b07ad73915b3…
	https://git.kernel.org/stable/c/faa72102b178c7ae6…

Impacted products

Vendor

Product

Version

Linux

Affected: e8521822c733c6deab0f339843cd37cd62c12795 , < a6f3e0fa8e862f220c26c2f27e5ddc42eb82ad3e (git)
Affected: e8521822c733c6deab0f339843cd37cd62c12795 , < 547d0b07ad73915b323bc21f85c5d3252bebbbcf (git)
Affected: e8521822c733c6deab0f339843cd37cd62c12795 , < faa72102b178c7ae6c6afea23879e7c84fc59b4e (git)

Linux

Affected: 6.18
Unaffected: 0 , < 6.18 (semver)
Unaffected: 6.18.17 , ≤ 6.18.* (semver)
Unaffected: 6.19.7 , ≤ 6.19.* (semver)
Unaffected: 7.0-rc2 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/infiniband/hw/ionic/ionic_controlpath.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "a6f3e0fa8e862f220c26c2f27e5ddc42eb82ad3e",
              "status": "affected",
              "version": "e8521822c733c6deab0f339843cd37cd62c12795",
              "versionType": "git"
            },
            {
              "lessThan": "547d0b07ad73915b323bc21f85c5d3252bebbbcf",
              "status": "affected",
              "version": "e8521822c733c6deab0f339843cd37cd62c12795",
              "versionType": "git"
            },
            {
              "lessThan": "faa72102b178c7ae6c6afea23879e7c84fc59b4e",
              "status": "affected",
              "version": "e8521822c733c6deab0f339843cd37cd62c12795",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/infiniband/hw/ionic/ionic_controlpath.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.18"
            },
            {
              "lessThan": "6.18",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.17",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0-rc2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.17",
                  "versionStartIncluding": "6.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.7",
                  "versionStartIncluding": "6.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0-rc2",
                  "versionStartIncluding": "6.18",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/ionic: Fix kernel stack leak in ionic_create_cq()\n\nstruct ionic_cq_resp resp {\n    __u32 cqid[2];         // offset 0 - PARTIALLY SET (see below)\n    __u8  udma_mask;       // offset 8 - SET (resp.udma_mask = vcq-\u003eudma_mask)\n    __u8  rsvd[7];         // offset 9 - NEVER SET \u003c- LEAK\n};\n\nrsvd[7]: 7 bytes of stack memory leaked unconditionally.\n\ncqid[2]: The loop at line 1256 iterates over udma_idx but skips indices\nwhere !(vcq-\u003eudma_mask \u0026 BIT(udma_idx)). The array has 2 entries but\nudma_count could be 1, meaning cqid[1] might never be written via\nionic_create_cq_common(). If udma_mask only has bit 0 set, cqid[1] (4\nbytes) is also leaked. So potentially 11 bytes leaked."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-25T10:28:02.818Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/a6f3e0fa8e862f220c26c2f27e5ddc42eb82ad3e"
        },
        {
          "url": "https://git.kernel.org/stable/c/547d0b07ad73915b323bc21f85c5d3252bebbbcf"
        },
        {
          "url": "https://git.kernel.org/stable/c/faa72102b178c7ae6c6afea23879e7c84fc59b4e"
        }
      ],
      "title": "RDMA/ionic: Fix kernel stack leak in ionic_create_cq()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-23384",
    "datePublished": "2026-03-25T10:28:02.818Z",
    "dateReserved": "2026-01-13T15:37:46.008Z",
    "dateUpdated": "2026-03-25T10:28:02.818Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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-6PC7-MM64-G3V9

CVE-2026-23384 (GCVE-0-2026-23384)

Tags

Sightings

Nomenclature