What is CVE-2026-46053?

CVE-2026-46053 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, affecting Linux kernel versions from 5.6 onward and patched in 5.10.258, 5.15.209, 6.1.175 and others. CVE-2026-46053 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-46053?

CVE-2026-46053 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-2026-46053?

Yes, CVE-2026-46053 has been patched. Fixed versions include 5.10.258, 5.15.209, 6.1.175 and others. If you are running Linux kernel 5.6 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-46053 actively exploited?

CVE-2026-46053 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-46053

High

In the Linux kernel, the following vulnerability has been resolved: net: rds: fix MR cleanup on copy error __rds_rdma_map() hands sg/pages ownership to the transport after get_mr() succeeds. If copying the generated cookie back to user space fails after that point, the error path must not free those resources again before dropping the MR reference. Remove the duplicate unpin/free from the put_user() failure branch so that MR teardown is handled only through the existing final cleanup path.

Package Linux Kernel

Published 2026-05-27

Last modified 2026-06-01

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

Affected versions

Linux kernel versions 5.6 and later are affected. Fixed in 5.10.258, 5.15.209, 6.1.175, 6.6.140, 6.12.86, 6.18.27, 7.0.4, 7.1-rc1 and their respective stable series.

Affected from

≥ 5.6

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 ✓ 6.12.86 6.12.x ✓ 6.18.27 6.18.x ✓ 7.0.4 7.0.x ✓ 7.1-rc1

References

The following references provide additional information about CVE-2026-46053 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/033370ffb3c9c0264d19f8ba9ef769523266589a
Patch
Kernel patch commit
https://git.kernel.org/stable/c/106dc689206610cfa2098f593fdd1e020c997835
Patch
Kernel patch commit
https://git.kernel.org/stable/c/8141a2dc70080eda1aedc0389ed2db2b292af5bd
Patch

8 patch commits total View all on NVD

Details

CVE ID CVE-2026-46053

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2026-05-27

Modified 2026-06-01

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-46053?

CVE-2026-46053 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . It affects Linux kernel versions from 5.6 onward and has been patched in 5.10.258, 5.15.209, 6.1.175 and others. CVE-2026-46053 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-46053?

CVE-2026-46053 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-2026-46053?

Yes — CVE-2026-46053 has been patched. Fixed versions include 5.10.258, 5.15.209, 6.1.175 and others. If you are running Linux kernel 5.6 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-46053 actively exploited?

No — CVE-2026-46053 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.