CVE-2026-64599

Kernel memory reuse via double channel cleanup

Published Aug 6, 2026 · Updated Aug 6, 2026

Use-after-free in the Linux Amlogic GXL crypto driver allows local users to access freed kernel memory during device probing. After meson_allocate_chanlist() unwinds a partial allocation, meson_crypto_probe() calls meson_free_chanlist() and destroys the same per-flow worker again. The published reproducer requires privileged module loading and an injected allocation failure; the demonstrated result is a KASAN-detected slab use-after-free.

CVSS severity7.8
High
EPSS probability0.12%
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 Linux Amlogic GXL crypto driver allows local users to access freed kernel memory during device probing. After meson_allocate_chanlist() unwinds a partial allocation, meson_crypto_probe() calls meson_free_chanlist() and destroys the same per-flow worker again. The published reproducer requires privileged module loading and an injected allocation failure; the demonstrated result is a KASAN-detected slab use-after-free.

The record

CVE
CVE-2026-64599
Published
Aug 6, 2026
Updated
Aug 6, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 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=48fe583fe54177bfb80f348e2a5cc34c3f710095 <5b452019a4127f63c1f2147237fc287d1581f606
  2. Affected versionversion=48fe583fe54177bfb80f348e2a5cc34c3f710095 <6d827ade51a24e18d81afb9f32756d339520a14c
  3. Affected versionversion=48fe583fe54177bfb80f348e2a5cc34c3f710095 <6dda8406d8a3da2519c8b388d443d7357839cb63
  4. Affected versionversion=48fe583fe54177bfb80f348e2a5cc34c3f710095 <6effdbaca3cd8354540bdf42c7f5fb84412afeb7
  5. Affected versionversion=48fe583fe54177bfb80f348e2a5cc34c3f710095 <84a00be9b736aa5dce902a290f62cbbbdcfab9ed
  6. Affected versionversion=48fe583fe54177bfb80f348e2a5cc34c3f710095 <c2c48aa7a6be36d4c93da75d14d4b4f2f4168c81
  7. Affected versionversion=48fe583fe54177bfb80f348e2a5cc34c3f710095 <c80360b4e85099fc3835378a96a59c0a2480fb07
  8. Affected versionversion=48fe583fe54177bfb80f348e2a5cc34c3f710095 <f30e2b879bda14bc3e1524fba6f8ab9ec119da90
  9. Affected versionversion=5.5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=48fe583fe54177bfb80f348e2a5cc34c3f710095 <5b452019a4127f63c1f2147237fc287d1581f606; version=48fe583fe54177bfb80f348e2a5cc34c3f710095 <6d827ade51a24e18d81afb9f32756d339520a14c; version=48fe583fe54177bfb80f348e2a5cc34c3f710095 <6dda8406d8a3da2519c8b388d443d7357839cb63; version=48fe583fe54177bfb80f348e2a5cc34c3f710095 <6effdbaca3cd8354540bdf42c7f5fb84412afeb7; version=48fe583fe54177bfb80f348e2a5cc34c3f710095 <84a00be9b736aa5dce902a290f62cbbbdcfab9ed; version=48fe583fe54177bfb80f348e2a5cc34c3f710095 <c2c48aa7a6be36d4c93da75d14d4b4f2f4168c81; version=48fe583fe54177bfb80f348e2a5cc34c3f710095 <c80360b4e85099fc3835378a96a59c0a2480fb07; version=48fe583fe54177bfb80f348e2a5cc34c3f710095 <f30e2b879bda14bc3e1524fba6f8ab9ec119da90; version=5.5

Published CVSS scores

7.8OSVCVSS: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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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