Linux Kernel up to 7.2-rc5 amdkfd drm/amdkfd pqm_create_queue allocation of resources

CVSS Meta Temp Score
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CTI Interest Score
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6.2$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Linux Kernel up to 6.6.150/6.12.102/6.18.43/7.1.7/7.2-rc5. This affects the function pqm_create_queue of the file drm/amdkfd of the component amdkfd. Performing a manipulation results in allocation of resources. This vulnerability was named CVE-2026-74448. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as critical, was found in Linux Kernel up to 6.6.150/6.12.102/6.18.43/7.1.7/7.2-rc5. This affects the function pqm_create_queue of the file drm/amdkfd of the component amdkfd. The manipulation with an unknown input leads to a allocation of resources vulnerability. CWE is classifying the issue as CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. This is going to have an impact on availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: fix QID bit leak in pqm_create_queue() When MES is enabled and amdgpu_amdkfd_alloc_kernel_mem() fails during the first queue creation for a process, pqm_create_queue() returns early via 'return retval' without going through the err_create_queue cleanup label. This means clear_bit(*qid, pqm->queue_slot_bitmap) is never called, leaving the reserved QID bit permanently set in queue_slot_bitmap. Over time this leaks QID slots, potentially exhausting all available queue slots. Fix this by replacing 'return retval' with 'goto err_allocate_pqn' so that clear_bit() is always called on the error path without touching the uninitialized pqn pointer. AILIKFD-813 (cherry picked from commit a107f74c38edbb80d6ab64dcaeeb292c14e9779f)

It is possible to read the advisory at git.kernel.org. This vulnerability is uniquely identified as CVE-2026-74448 since 08/15/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 335828 (Linux Distros Unpatched Vulnerability : CVE-2026-74448), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.6.151, 6.12.103, 6.18.44, 7.1.8 or 7.2-rc6 eliminates this vulnerability. Applying the patch 8924e2594a15bdbd07f8696770864366d787ab70/2ff5bb3645c72b3690e70c513a62a86600c4632f/5f0f2ddeac738e2ca9d12cb76a1ff2904e85ecc3/7c35bf94150d872e670a6632aa819d320279effb/38b73293f38658a4685ffcea666462024f858ad9 is able to eliminate this problem.

The vulnerability is also documented in the vulnerability database at Tenable (335828). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.2

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Allocation of resources
CWE: CWE-770 / CWE-400 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 335828
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-74448

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.6.151/6.12.103/6.18.44/7.1.8/7.2-rc6
Patch: 8924e2594a15bdbd07f8696770864366d787ab70/2ff5bb3645c72b3690e70c513a62a86600c4632f/5f0f2ddeac738e2ca9d12cb76a1ff2904e85ecc3/7c35bf94150d872e670a6632aa819d320279effb/38b73293f38658a4685ffcea666462024f858ad9

Timelineinfo

08/15/2026 Advisory disclosed
08/15/2026 +0 days CVE reserved
08/15/2026 +0 days VulDB entry created
08/17/2026 +2 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-74448 (🔒)
GCVE (CVE): GCVE-0-2026-74448
GCVE (VulDB): GCVE-100-390783

Entryinfo

Created: 08/15/2026 15:03
Updated: 08/17/2026 10:09
Changes: 08/15/2026 15:03 (60), 08/17/2026 10:09 (2)
Complete: 🔍
Cache ID: 216::103

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