CVE-2026-53097

Kernel use-after-free via uncanceled dump work

Published Jun 24, 2026 · Updated Jun 24, 2026

Use-after-free in the mt7996 Wi-Fi driver in Linux Kernel allows local users to trigger a freed-memory dereference during PCI device detach. mt7996_coredump_unregister() frees crash_data without first synchronizing dump_work, so mt7996_mac_dump_work() can dereference that allocation after release. The race requires an mt7996 PCI device to detach while dump_work is queued or executing; the published record identifies no demonstrated consequence beyond the unsafe kernel-memory access.

CVSS severity7.8
High
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in the mt7996 Wi-Fi driver in Linux Kernel allows local users to trigger a freed-memory dereference during PCI device detach. mt7996_coredump_unregister() frees crash_data without first synchronizing dump_work, so mt7996_mac_dump_work() can dereference that allocation after release. The race requires an mt7996 PCI device to detach while dump_work is queued or executing; the published record identifies no demonstrated consequence beyond the unsafe kernel-memory access.

The record

CVE
CVE-2026-53097
Published
Jun 24, 2026
Updated
Jun 24, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-416, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 24, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.4
  2. Affected versionversion=878161d5d4a469a6ef7f3fb4fe9f676bc508ee99 <180182a3f23ff79430a32ca2c4c1885368ceab48
  3. Affected versionversion=878161d5d4a469a6ef7f3fb4fe9f676bc508ee99 <188e10f9ea3109d23c6b7643aa6ec2f5cb0faa6d
  4. Affected versionversion=878161d5d4a469a6ef7f3fb4fe9f676bc508ee99 <aa4a31cd89f4fde5043ac613fe0e27014a60a60b
  5. Affected versionversion=878161d5d4a469a6ef7f3fb4fe9f676bc508ee99 <c8f62f73bbced3a79894655bdb0b625462d956fc

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=6.4; version=878161d5d4a469a6ef7f3fb4fe9f676bc508ee99 <180182a3f23ff79430a32ca2c4c1885368ceab48; version=878161d5d4a469a6ef7f3fb4fe9f676bc508ee99 <188e10f9ea3109d23c6b7643aa6ec2f5cb0faa6d; version=878161d5d4a469a6ef7f3fb4fe9f676bc508ee99 <aa4a31cd89f4fde5043ac613fe0e27014a60a60b; version=878161d5d4a469a6ef7f3fb4fe9f676bc508ee99 <c8f62f73bbced3a79894655bdb0b625462d956fc

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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