Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2026-23384

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
25/03/2026
Last modified:
24/04/2026

Description

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

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 5.50 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
5.50
Severity 3.x
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.18.1 (including) 6.18.17 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.19 (including) 6.19.7 (excluding)
cpe:2.3:o:linux:linux_kernel:6.18:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools