What is CVE-2026-53097?

CVE-2026-53097 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, classified as a Use After Free flaw (CWE-416), affecting Linux kernel versions from 6.4 onward and patched in 6.12.91, 6.18.33, 7.0.10 and others. CVE-2026-53097 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-53097?

CVE-2026-53097 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-2026-53097?

Yes, CVE-2026-53097 has been patched. Fixed versions include 6.12.91, 6.18.33, 7.0.10 and others. If you are running Linux kernel 6.4 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-53097 actively exploited?

CVE-2026-53097 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Use After Free (CWE-416)?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/416.html

CVE-2026-53097

High

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7996: fix use-after-free bugs in mt7996_mac_dump_work() When the mt7996 pci chip is detaching, the mt7996_crash_data is released in mt7996_coredump_unregister(). However, the work item dump_work may still be running or pending, leading to UAF bugs when the already freed crash_data is dereferenced again in mt7996_mac_dump_work(). The race condition can occur as follows: CPU 0 (removal path) | CPU 1 (workqueue) mt7996_pci_remove() | mt7996_sys_recovery_set() mt7996_unregister_device() | mt7996_reset() mt7996_coredump_unregister() | queue_work() vfree(dev->coredump.crash_data) | mt7996_mac_dump_work() | crash_data-> // UAF Fix this by ensuring dump_work is properly canceled before the crash_data is deallocated. Add cancel_work_sync() in mt7996_unregister_device() to synchronize with any pending or executing dump work.

Package Linux Kernel

Published 2026-06-24

Last modified 2026-07-21

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-416

CVE-2026-53097 is a Use After Free vulnerability

What is Use After Free?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. Learn more on MITRE CWE

Affected versions

Linux kernel versions 6.4 and later are affected. Fixed in 6.12.91, 6.18.33, 7.0.10, 7.1 and their respective stable series.

Affected from

≥ 6.4

Fixed in

✓ 6.12.91 6.12.x ✓ 6.18.33 6.18.x ✓ 7.0.10 7.0.x ✓ 7.1

References

4 total

Kernel Git
https://git.kernel.org/stable/c/180182a3f23ff79430a32ca2c4c1885368ceab48

Patch
Kernel Git
https://git.kernel.org/stable/c/188e10f9ea3109d23c6b7643aa6ec2f5cb0faa6d

Patch
Kernel Git
https://git.kernel.org/stable/c/aa4a31cd89f4fde5043ac613fe0e27014a60a60b

Patch
Kernel Git
https://git.kernel.org/stable/c/c8f62f73bbced3a79894655bdb0b625462d956fc

Patch

Details

CVE ID CVE-2026-53097

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2026-06-24

Modified 2026-07-21

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-53097?

CVE-2026-53097 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 , classified as an Use After Free flaw (CWE-416) . It affects Linux kernel versions from 6.4 onward and has been patched in 6.12.91, 6.18.33, 7.0.10 and others. CVE-2026-53097 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-53097?

CVE-2026-53097 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-2026-53097?

Yes. CVE-2026-53097 has been patched. Fixed versions include 6.12.91, 6.18.33, 7.0.10 and others. If you are running Linux kernel 6.4 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-53097 actively exploited?

No. CVE-2026-53097 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.