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

Vulnerability from cvelistv5 – Published: 2026-03-25 10:28 – Updated: 2026-05-11 22:05
VLAI
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
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: e8521822c733c6deab0f339843cd37cd62c12795 , < a6f3e0fa8e862f220c26c2f27e5ddc42eb82ad3e (git)
Affected: e8521822c733c6deab0f339843cd37cd62c12795 , < 547d0b07ad73915b323bc21f85c5d3252bebbbcf (git)
Affected: e8521822c733c6deab0f339843cd37cd62c12795 , < faa72102b178c7ae6c6afea23879e7c84fc59b4e (git)
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Linux 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 , ≤ * (original_commit_for_fix)
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Show details on NVD website
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{
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      "affected": [
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          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/infiniband/hw/ionic/ionic_controlpath.c"
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    "redhat_vex": {
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      "cve": "CVE-2026-23384",
      "id": "CVE-2026-23384",
      "initial_release_date": "2026-03-25T00:00:00+00:00",
      "product_status:known_not_affected": "274",
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      "title": "kernel: RDMA/ionic: Fix kernel stack leak in ionic_create_cq()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23384.json",
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      "current_release_date": "2026-07-15T05:29:13Z",
      "cve": "CVE-2026-23384",
      "id": "CVE-2026-23384",
      "initial_release_date": "2026-03-25T16:55:04Z",
      "product_status:known_not_affected": "330",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-23384",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-23384.json",
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}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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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.


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