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

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CVE-2026-53355

Severity CVSS v4.0:
Pending analysis
Type:
CWE-476 NULL Pointer Dereference
Publication date:
01/07/2026
Last modified:
22/07/2026

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> net: rds: clear i_sends on setup unwind<br /> <br /> The RDS IB connection teardown path is written so it can run during<br /> partial startup and on repeated shutdown attempts. It uses NULL<br /> pointers to distinguish resources that are still owned from resources<br /> that have already been released.<br /> <br /> When rds_ib_setup_qp() fails after allocating i_sends but before<br /> allocating i_recvs, the sends_out path frees i_sends without clearing<br /> the pointer. A later shutdown pass can still treat that stale pointer<br /> as a live send ring allocation.<br /> <br /> Clear i_sends after vfree() in the error unwind path so the existing<br /> shutdown logic continues to use the correct ownership state.

Impact

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

Base Score: 9.80 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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

Base Score 3.x
9.80
Severity 3.x
CRITICAL

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 3.18.74 (including) 3.19 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 4.1.46 (including) 4.2 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 4.4.91 (including) 4.5 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 4.9.54 (including) 4.10 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 4.11.1 (including) 5.10.259 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.11 (including) 5.15.210 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.16 (including) 6.1.176 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.2 (including) 6.6.143 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.7 (including) 6.12.94 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.13 (including) 6.18.36 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.19 (including) 7.0.13 (excluding)
cpe:2.3:o:linux:linux_kernel:4.11:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.11:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.11:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.11:rc5:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools