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

Vulnerability from cvelistv5 – Published: 2026-03-25 10:28 – Updated: 2026-04-13 06:06
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 ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
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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{
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          "product": "Linux",
          "programFiles": [
            "drivers/infiniband/hw/ionic/ionic_controlpath.c"
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  }
}


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