Linux Kernel up to 7.2.5 Iommu Dma dma_alloc_from_pool allocation of resources

CVSS Meta Temp Score
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CTI Interest Score
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9.5$0-$5k0.80+

Summaryinfo

A vulnerability identified as very critical has been detected in Linux Kernel up to 7.2.5. This affects the function dma_alloc_from_pool of the component Iommu Dma. Performing a manipulation results in allocation of resources. This vulnerability is reported as CVE-2026-90388. The attack is possible to be carried out remotely. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as very critical, was found in Linux Kernel up to 7.2.5. This affects the function dma_alloc_from_pool of the component Iommu Dma. 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 confidentiality, integrity, and availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: iommu/dma: Check atomic pool allocation result directly The non-blocking, non-coherent allocation path uses dma_alloc_from_pool(), which returns the allocated page and fills cpu_addr only on success. Do not rely on cpu_addr to detect allocation failure in this path. Check the returned page directly before using it for the IOMMU mapping.

It is possible to read the advisory at git.kernel.org. This vulnerability is uniquely identified as CVE-2026-90388 since 09/11/2026. 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 pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/17/2026). The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

Upgrading to version 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.110, 6.18.52, 7.2.6 or 7.3-rc1 eliminates this vulnerability. Applying the patch ac9cd0a669b8be5d178dbd471b0d68039dac58b5/db46cb9da83a507d86d2bb080bdb09c865da3d0a/d56c3f955b21e5764c1497e295a5b5d0b3a40470/06dffc96693083dda3412311406e558cf27f1574/a4ace31d732b657d774e31fb444c0c27d42c78e5/fb0b39287ba894dbdfac2901c51788b63f5c2291/8c486293ddd0af60991408149fc3e964ea888dc4/af95a0ebc0a0db0762be75f51eadf770bad01aaa is able to eliminate this problem. The best possible mitigation is suggested to be upgrading to the latest version.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.9
VulDB Meta Temp Score: 9.5

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

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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
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 5.10.270/5.15.221/6.1.188/6.6.157/6.12.110/6.18.52/7.2.6/7.3-rc1
Patch: ac9cd0a669b8be5d178dbd471b0d68039dac58b5/db46cb9da83a507d86d2bb080bdb09c865da3d0a/d56c3f955b21e5764c1497e295a5b5d0b3a40470/06dffc96693083dda3412311406e558cf27f1574/a4ace31d732b657d774e31fb444c0c27d42c78e5/fb0b39287ba894dbdfac2901c51788b63f5c2291/8c486293ddd0af60991408149fc3e964ea888dc4/af95a0ebc0a0db0762be75f51eadf770bad01aaa

Timelineinfo

09/11/2026 CVE reserved
09/17/2026 +6 days Advisory disclosed
09/17/2026 +0 days VulDB entry created
09/17/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-90388 (🔒)
GCVE (CVE): GCVE-0-2026-90388
GCVE (VulDB): GCVE-100-406947

Entryinfo

Created: 09/17/2026 22:11
Changes: 09/17/2026 22:11 (59)
Complete: 🔍
Cache ID: 216::103

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