What is CVE-2026-46153?

CVE-2026-46153 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 2.6.12 onward and patched in 7.0.7 and 7.1. CVE-2026-46153 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-46153?

CVE-2026-46153 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2026-46153?

Yes, CVE-2026-46153 has been patched. Fixed versions include 7.0.7 and 7.1. If you are running Linux kernel 2.6.12 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-46153 actively exploited?

CVE-2026-46153 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-46153

Medium

In the Linux kernel, the following vulnerability has been resolved: 8021q: delete cleared egress QoS mappings vlan_dev_set_egress_priority() currently keeps cleared egress priority mappings in the hash as tombstones. Repeated set/clear cycles with distinct skb priorities therefore accumulate mapping nodes until device teardown and leak memory. Delete mappings when vlan_prio is cleared instead of keeping tombstones. Now that the egress mapping lists are RCU protected, the node can be unlinked safely and freed after a grace period.

Package Linux Kernel

Published 2026-05-28

Last modified 2026-06-09

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

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

Affected versions

Linux kernel versions 2.6.12 and later are affected. Fixed in 7.0.7, 7.1 and their respective stable series.

Affected from

≥ 2.6.12

Fixed in

✓ 7.0.7 7.0.x ✓ 7.1

References

2 total

Kernel Git
https://git.kernel.org/stable/c/7dddc74af369478ba7f9bc136d0fc1dc4570cb66

Patch
Kernel Git
https://git.kernel.org/stable/c/a52e122c9e4d56ad9a03b32c915a199276d989c3

Patch

Details

CVE ID CVE-2026-46153

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-05-28

Modified 2026-06-09

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-46153?

CVE-2026-46153 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 2.6.12 onward and has been patched in 7.0.7 and 7.1. CVE-2026-46153 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-46153?

CVE-2026-46153 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2026-46153?

Yes. CVE-2026-46153 has been patched. Fixed versions include 7.0.7 and 7.1. If you are running Linux kernel 2.6.12 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-46153 actively exploited?

No. CVE-2026-46153 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.