What is CVE-2026-53132?

CVE-2026-53132 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10, classified as a Memory Leak flaw (CWE-401), affecting Linux kernel versions from 6.1.63 onward and patched in 6.12.94, 6.18.36, 7.0.13 and others. CVE-2026-53132 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-53132?

CVE-2026-53132 has a CVSS score of 7.1 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.

Is there a patch available for CVE-2026-53132?

Yes, CVE-2026-53132 has been patched. Fixed versions include 6.12.94, 6.18.36, 7.0.13 and others. If you are running Linux kernel 6.1.63 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-53132 actively exploited?

CVE-2026-53132 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-2026-53132

High

In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: fix potential unbounded skb queue virtio_transport_inc_rx_pkt() checks vvs->rx_bytes + len > vvs->buf_alloc. virtio_transport_recv_enqueue() skips coalescing for packets with VIRTIO_VSOCK_SEQ_EOM. If fed with packets with len == 0 and VIRTIO_VSOCK_SEQ_EOM, a very large number of packets can be queued because vvs->rx_bytes stays at 0. Fix this by estimating the skb metadata size: (Number of skbs in the queue) * SKB_TRUESIZE(0)

Package Linux Kernel

Published 2026-06-25

Last modified 2026-07-06

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.1

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

None

Availability

High

Vector string

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

Weakness type

CWE-401

CVE-2026-53132 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 6.1.63, 6.3 and later are affected. Fixed in 6.12.94, 6.18.36, 7.0.13, 7.1 and their respective stable series.

Affected from

≥ 6.1.63 ≥ 6.3

Fixed in

✓ 6.12.94 6.12.x ✓ 6.18.36 6.18.x ✓ 7.0.13 7.0.x ✓ 7.1

References

4 total

Kernel Git
https://git.kernel.org/stable/c/059b7dbd20a6f0c539a45ddff1573cb8946685b5

Patch
Kernel Git
https://git.kernel.org/stable/c/100d5b2ffdc6468b9e48532641f29e83efdcb63c

Patch
Kernel Git
https://git.kernel.org/stable/c/1eca304f97a34ed5e921e1f0e06c8b241f25bf12

Patch
Kernel Git
https://git.kernel.org/stable/c/9bdc637fde66b63d6cad0caacd034888bb7bf5f5

Patch

Details

CVE ID CVE-2026-53132

Severity High

CVSS score 7.1 / 10

CVSS version 3.1

Published 2026-06-25

Modified 2026-07-06

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-53132?

CVE-2026-53132 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10 , classified as a Memory Leak flaw (CWE-401) . It affects Linux kernel versions from 6.1.63 onward and has been patched in 6.12.94, 6.18.36, 7.0.13 and others. CVE-2026-53132 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-53132?

CVE-2026-53132 has a CVSS score of 7.1 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.
Is there a patch available for CVE-2026-53132?

Yes. CVE-2026-53132 has been patched. Fixed versions include 6.12.94, 6.18.36, 7.0.13 and others. If you are running Linux kernel 6.1.63 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-53132 actively exploited?

No. CVE-2026-53132 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.