Linux Kernel up to 7.2.5 rapidio rio_add_net use after free

CVSS Meta Temp Score
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CTI Interest Score
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7.8$0-$5k1.17

Summaryinfo

A vulnerability classified as very critical was found in Linux Kernel up to 7.2.5. This affects the function rio_add_net of the component rapidio. The manipulation results in use after free. This vulnerability is cataloged as CVE-2026-90319. The attack must be initiated from a local position. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as very critical has been found in Linux Kernel up to 7.2.5. Affected is the function rio_add_net of the component rapidio. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: rapidio: clear mport->net when rio_add_net() fails rio_alloc_net() stores the newly allocated rio_net in mport->net before rio_scan_alloc_net() registers the device. If rio_add_net() fails, rio_scan_alloc_net() drops the device reference with put_device(), which releases the rio_net through the device release callback. However, mport->net is left pointing at the freed object. A later mport unregister path can then dereference the dangling mport->net pointer and may try to free the same rio_net again. Clear mport->net in the rio_add_net() failure path, matching the cleanup done for the destID table allocation failure path.

The advisory is available at git.kernel.org. This vulnerability is traded as CVE-2026-90319 since 09/11/2026. The exploitability is told to be easy. Local access is required to approach this attack. Additional levels of successful authentication are needed for exploitation. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 09/17/2026).

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 24f60ebabeb8757cec8ec2f97660d521bc9147ec/6a760a53e73064735cdfa9e51c664983a89baf96/3f00999e44d9984036a029dbad9d2afe94a674d0/332591a245de978349a7558f8b20469951bb77cc/75f0bc167b96bbbef8182b88308c732af82c8d83/44a37264b26911e13d0a4f5630751c4157ed0354/530a9d5ef831a0049dad9a6b2b92d02301352c38/b74030fbf187b43c1f85b66a7082e9946511cb5d 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: 8.2
VulDB Meta Temp Score: 7.8

VulDB Base Score: 8.2
VulDB Temp Score: 7.8
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: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

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: 24f60ebabeb8757cec8ec2f97660d521bc9147ec/6a760a53e73064735cdfa9e51c664983a89baf96/3f00999e44d9984036a029dbad9d2afe94a674d0/332591a245de978349a7558f8b20469951bb77cc/75f0bc167b96bbbef8182b88308c732af82c8d83/44a37264b26911e13d0a4f5630751c4157ed0354/530a9d5ef831a0049dad9a6b2b92d02301352c38/b74030fbf187b43c1f85b66a7082e9946511cb5d

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-2026-90319 (🔒)
GCVE (CVE): GCVE-0-2026-90319
GCVE (VulDB): GCVE-100-406854

Entryinfo

Created: 09/17/2026 21:34
Changes: 09/17/2026 21:34 (59)
Complete: 🔍
Cache ID: 216::103

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