Linux Kernel up to 6.12.109/6.18.51/7.2.5 pnfs/blocklayout bdev_file allocation of resources

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in Linux Kernel up to 6.12.109/6.18.51/7.2.5. This affects the function bl_parse_concat/bl_parse_stripe/bl_parse_scsi/bl_free_device of the component pnfs/blocklayout. Executing a manipulation of the argument bdev_file can lead to allocation of resources. This vulnerability is tracked as CVE-2026-90150. The attack can be launched remotely. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.12.109/6.18.51/7.2.5. It has been declared as critical. This vulnerability affects the function bl_parse_concat/bl_parse_stripe/bl_parse_scsi/bl_free_device of the component pnfs/blocklayout. The manipulation of the argument bdev_file with an unknown input leads to a allocation of resources vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: pnfs/blocklayout: Fix device leaks on parse failure bl_parse_concat() and bl_parse_stripe() allocate a child device array and then parse each child in turn. If parsing a child fails, the failed child is not counted in nr_children and the parent may be left with a children array that bl_free_device() will not release when nr_children is zero. Release the failed child and the already parsed children before returning the error. Also make bl_free_device() release the child array whenever the children pointer is set, so that partially initialised concat or stripe devices are cleaned up correctly. bl_parse_scsi() can also fail after assigning d->bdev_file and dropping the file reference. Clear the pointer after fput() so that an outer cleanup path does not put it again.

The advisory is shared for download at git.kernel.org. This vulnerability was named CVE-2026-90150 since 09/11/2026. The exploitation appears to be easy. The attack can be initiated remotely. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 09/17/2026). The MITRE ATT&CK project declares the attack technique as T1499.

Upgrading to version 6.12.110, 6.18.52, 7.2.6 or 7.3-rc1 eliminates this vulnerability. Applying the patch 8a2494964edac2a13e82441c2bf887548dc3be0b/1e1c36b206c659cf94c6755a1d821ed1babd32bc/23e4162405c456ce12c772d5882d306135e828ae/c056f817e4200fb18079d5052c273a22f191ff0a is able to eliminate this problem. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
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 6.12.110/6.18.52/7.2.6/7.3-rc1
Patch: 8a2494964edac2a13e82441c2bf887548dc3be0b/1e1c36b206c659cf94c6755a1d821ed1babd32bc/23e4162405c456ce12c772d5882d306135e828ae/c056f817e4200fb18079d5052c273a22f191ff0a

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-2026-90150 (🔒)
GCVE (CVE): GCVE-0-2026-90150
GCVE (VulDB): GCVE-100-406672

Entryinfo

Created: 09/17/2026 20:06
Changes: 09/17/2026 20:06 (60)
Complete: 🔍
Cache ID: 216::103

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