Secuno
ENNL
Book demo

CVE-2026-64080

Linux Kernel use-after-free

9.3 CRITICALEPSS 0.20%
  1. Published19 Jul 2026

Description

In the Linux kernel, the following vulnerability has been resolved: firmware: arm_ffa: Snapshot notifier callbacks under lock Both notification handlers currently look up a notifier callback under notify_lock, drop the lock, and then dereference the returned notifier entry. A concurrent unregister can delete and free that entry in the gap, leaving the handler to dereference stale memory. Copy the callback pointer and callback data while notify_lock is still held and invoke the callback only after the lock is dropped. This keeps the existing callback execution model while removing the use-after-free window in both the framework and non-framework notification paths.

CVSS 3.1 breakdown

Attack vectorLocal
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Affected products

Linux Kernel≥ 6.15 < 6.18.34 · ≥ 6.19 < 7.0.11 · 7.1

Remediation

Fixed in
Linux Kernel≥ 6.18.34

References

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

CVE-2026-859658.0
Progress MarkLogic Server 12.x releases before 12.1.0 and 11.x releases before 11.3.7…
CVE-2026-57599.8
A double free and use-after-free vulnerability in the RdbLoadDeletedNodes function of…
CVE-2026-1071838.1
llama.cpp before b11393 contains a use-after-free and double free vulnerability in…
CVE-2026-553309.8
In BluetoothCccHandlerCallbackImpl of bluetooth_ccc.cc, there is a possible…
CVE-2026-1064238.8
Use after free in Media in Google Chrome prior to 155.0.8059.39 allowed a remote…
CVE-2026-1064218.8
Use after free in PDF in Google Chrome prior to 155.0.8059.39 allowed a remote attacker…

Frequently asked

Is CVE-2026-64080 being actively exploited?

CVE-2026-64080 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.20%.

How severe is CVE-2026-64080?

CVE-2026-64080 has a CVSS 3.1 base score of 9.3, rated critical. EPSS estimates a 0.20% probability of exploitation.

Which products are affected by CVE-2026-64080?

Affected products include Linux Kernel.

How do I fix CVE-2026-64080?

Upgrade affected software to a fixed version, for example Linux Kernel 6.18.34 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-64080 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation worksBook a demo

Get Patch this first every Monday

Five vulnerabilities that matter this week, ranked on real exploitation. Plain language, one email, no spam.

You can unsubscribe with one click from every issue. We handle your details as described in our privacy policy.

Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.