Linux Kernel up to 6.12.95/6.18.38/7.1.3 qat use after free

CVSS Meta Temp Score
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CTI Interest Score
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8.7$5k-$25k0.00

Summaryinfo

A vulnerability, which was classified as very critical, was found in Linux Kernel up to 6.12.95/6.18.38/7.1.3. Affected by this issue is the function adf_dev_init/adf_dev_start/adf_dev_stop/adf_dev_shutdown/adf_dev_restarting_notify/adf_dev_restarted_notify/adf_error_notifier of the component qat. Executing a manipulation can lead to use after free. This vulnerability appears as CVE-2026-64305. The attack may be performed from remote. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 6.12.95/6.18.38/7.1.3 and classified as very critical. This vulnerability affects the function adf_dev_init/adf_dev_start/adf_dev_stop/adf_dev_shutdown/adf_dev_restarting_notify/adf_dev_restarted_notify/adf_error_notifier of the component qat. The manipulation with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: crypto: qat - protect service table iterations with service_lock The service_table list is protected by service_lock when entries are added or removed (in adf_service_add() and adf_service_remove()), but several functions iterate over the list without holding this lock. A concurrent adf_service_register() or adf_service_unregister() call could modify the list during traversal, leading to list corruption or a use-after-free. Fix this by holding service_lock across all list_for_each_entry() iterations of service_table in adf_dev_init(), adf_dev_start(), adf_dev_stop(), adf_dev_shutdown(), adf_dev_restarting_notify(), adf_dev_restarted_notify(), and adf_error_notifier(). The lock ordering is safe: callers of the static helpers (adf_dev_up() and adf_dev_down()) acquire state_lock before service_lock, and no event_hld callback or service_lock holder ever acquires state_lock in the reverse order.

The advisory is available at git.kernel.org. This vulnerability was named CVE-2026-64305 since 07/19/2026. The exploitation appears to be easy. The attack can be initiated remotely. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 09/03/2026).

Upgrading to version 6.12.96, 6.18.39, 7.1.4 or 7.2-rc1 eliminates this vulnerability. Applying the patch 222fa7b453b612f4407f260146d89a2ce2bc831d/c3c5925791cff3b84d313293fd60f384d877d793/0dbcecea740d943002c1cbdafa39bdfc108e32a5/5c6f845e77ec35f9b7b047cc8f9789bf397cdd3e is able to eliminate this problem. The best possible mitigation is suggested to be upgrading to the latest version.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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Version

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.9
VulDB Meta Temp Score: 8.7

VulDB Base Score: 9.9
VulDB Temp Score: 9.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.12.96/6.18.39/7.1.4/7.2-rc1
Patch: 222fa7b453b612f4407f260146d89a2ce2bc831d/c3c5925791cff3b84d313293fd60f384d877d793/0dbcecea740d943002c1cbdafa39bdfc108e32a5/5c6f845e77ec35f9b7b047cc8f9789bf397cdd3e

Timelineinfo

07/19/2026 CVE reserved
07/25/2026 +6 days Advisory disclosed
07/25/2026 +0 days VulDB entry created
09/03/2026 +40 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-64305 (🔒)
GCVE (CVE): GCVE-0-2026-64305
GCVE (VulDB): GCVE-100-383098

Entryinfo

Created: 07/25/2026 14:20
Updated: 09/03/2026 22:37
Changes: 07/25/2026 14:20 (59), 09/03/2026 22:37 (11)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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