What is CVE-2026-46178?

CVE-2026-46178 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, classified as a Memory Leak flaw (CWE-401), affecting Linux kernel versions from 2.6.22 onward and patched in 5.10.258, 5.15.209, 6.1.175 and others. CVE-2026-46178 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-46178?

CVE-2026-46178 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2026-46178?

Yes, CVE-2026-46178 has been patched. Fixed versions include 5.10.258, 5.15.209, 6.1.175 and others. If you are running Linux kernel 2.6.22 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-46178 actively exploited?

CVE-2026-46178 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Memory Leak (CWE-401)?

The product does not release memory after use, causing gradual resource exhaustion. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/401.html

CVE-2026-46178

High

In the Linux kernel, the following vulnerability has been resolved: RDMA/mlx4: Fix resource leak on error in mlx4_ib_create_srq() Sashiko points out that mlx4_srq_alloc() was not undone during error unwind, add the missing call to mlx4_srq_free().

Package Linux Kernel

Published 2026-05-28

Last modified 2026-06-11

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness type

CWE-401

CVE-2026-46178 is a Memory Leak vulnerability

What is Memory Leak?

The product does not release memory after use, causing gradual resource exhaustion. Learn more on MITRE CWE

Affected versions

Linux kernel versions 2.6.22 and later are affected. Fixed in 5.10.258, 5.15.209, 6.1.175, 6.6.140, 6.12.88, 6.18.30, 7.0.7, 7.1 and their respective stable series.

Affected from

≥ 2.6.22

Fixed in

✓ 5.10.258 5.10.x ✓ 5.15.209 5.15.x ✓ 6.1.175 6.1.x ✓ 6.6.140 6.6.x ✓ 6.12.88 6.12.x ✓ 6.18.30 6.18.x ✓ 7.0.7 7.0.x ✓ 7.1

References

8 total

Kernel Git
https://git.kernel.org/stable/c/0be6ae614ca7fa53e7389e3c7462ed20abbd4192

Patch
Kernel Git
https://git.kernel.org/stable/c/0dbd619716fb07b7de1acd64fec673ee6e1adde7

Patch
Kernel Git
https://git.kernel.org/stable/c/388617f44d81604a760742a0b5de292d411e63e3

Patch
Kernel Git
https://git.kernel.org/stable/c/53fd4c03558672ccb167754fbacbf045c7ab335c

Patch
Kernel Git
https://git.kernel.org/stable/c/5b3b220d54e6a3d77380cb7caa1ef79cb8f4fc94

Patch

Showing 5 of 8 references View all on NVD

Details

CVE ID CVE-2026-46178

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2026-05-28

Modified 2026-06-11

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-46178?

CVE-2026-46178 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 , classified as a Memory Leak flaw (CWE-401) . It affects Linux kernel versions from 2.6.22 onward and has been patched in 5.10.258, 5.15.209, 6.1.175 and others. CVE-2026-46178 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-46178?

CVE-2026-46178 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2026-46178?

Yes. CVE-2026-46178 has been patched. Fixed versions include 5.10.258, 5.15.209, 6.1.175 and others. If you are running Linux kernel 2.6.22 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-46178 actively exploited?

No. CVE-2026-46178 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.