CVE-2026-90319Hinoki check available

Kernel disruption via stale RapidIO network pointer

Published Sep 17, 2026 · Updated Sep 17, 2026

Use-after-free in Linux RapidIO allows local users to disrupt the kernel through failed network registration and port teardown. In drivers/rapidio/rio-scan.c, rio_scan_alloc_net() releases the rio_net after rio_add_net() fails but leaves mport->net dangling, exposing later unregister operations to freed-memory access or another free. The path requires RapidIO registration failure followed by port teardown; the published assessment requires privileged local access, and a specific crash mode or code-execution outcome is not established.

CVSS severity4.1
Medium
EPSS probability0.21%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Use-after-free in Linux RapidIO allows local users to disrupt the kernel through failed network registration and port teardown. In drivers/rapidio/rio-scan.c, rio_scan_alloc_net() releases the rio_net after rio_add_net() fails but leaves mport->net dangling, exposing later unregister operations to freed-memory access or another free. The path requires RapidIO registration failure followed by port teardown; the published assessment requires privileged local access, and a specific crash mode or code-execution outcome is not established.

The record

CVE
CVE-2026-90319
Published
Sep 17, 2026
Updated
Sep 17, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Sep 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=181d4daaefb3bceeb2f2635ba9f3781eeda9e550 <6a760a53e73064735cdfa9e51c664983a89baf96
  2. Affected versionversion=4f3509cfcc02e9d757f2714bb7dbbeec35de6fa7 <24f60ebabeb8757cec8ec2f97660d521bc9147ec
  3. Affected versionversion=5.10.235 <5.10.270
  4. Affected versionversion=5.15.179 <5.15.221
  5. Affected versionversion=5.4.291 <5.5
  6. Affected versionversion=6.1.131 <6.1.188
  7. Affected versionversion=6.12.19 <6.12.110
  8. Affected versionversion=6.13.7 <6.14
  9. Affected versionversion=6.14
  10. Affected versionversion=6.6.83 <6.6.157
  11. Affected versionversion=6d22953c4a183d0b7fdf34d68c5debd16da6edc5
  12. Affected versionversion=a0d069ccc475abaaa79c6368ee27fc0b5912bea8
  13. Affected versionversion=ad82be4298a89a9ae46f07128bdf3d8614bce745 <3f00999e44d9984036a029dbad9d2afe94a674d0
  14. Affected versionversion=c332f3e2df0fcae5a45fd55cc18902fb1e4825ca <75f0bc167b96bbbef8182b88308c732af82c8d83
  15. Affected versionversion=e6411c3b9512dba09af7d014d474516828c89706 <332591a245de978349a7558f8b20469951bb77cc
  16. Affected versionversion=e842f9a1edf306bf36fe2a4d847a0b0d458770de <44a37264b26911e13d0a4f5630751c4157ed0354
  17. Affected versionversion=e842f9a1edf306bf36fe2a4d847a0b0d458770de <530a9d5ef831a0049dad9a6b2b92d02301352c38
  18. Affected versionversion=e842f9a1edf306bf36fe2a4d847a0b0d458770de <b74030fbf187b43c1f85b66a7082e9946511cb5d

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=181d4daaefb3bceeb2f2635ba9f3781eeda9e550 <6a760a53e73064735cdfa9e51c664983a89baf96; version=4f3509cfcc02e9d757f2714bb7dbbeec35de6fa7 <24f60ebabeb8757cec8ec2f97660d521bc9147ec; version=5.10.235 <5.10.270; version=5.15.179 <5.15.221; version=5.4.291 <5.5; version=6.1.131 <6.1.188; version=6.12.19 <6.12.110; version=6.13.7 <6.14; version=6.14; version=6.6.83 <6.6.157; version=6d22953c4a183d0b7fdf34d68c5debd16da6edc5; version=a0d069ccc475abaaa79c6368ee27fc0b5912bea8; version=ad82be4298a89a9ae46f07128bdf3d8614bce745 <3f00999e44d9984036a029dbad9d2afe94a674d0; version=c332f3e2df0fcae5a45fd55cc18902fb1e4825ca <75f0bc167b96bbbef8182b88308c732af82c8d83; version=e6411c3b9512dba09af7d014d474516828c89706 <332591a245de978349a7558f8b20469951bb77cc; version=e842f9a1edf306bf36fe2a4d847a0b0d458770de <44a37264b26911e13d0a4f5630751c4157ed0354; version=e842f9a1edf306bf36fe2a4d847a0b0d458770de <530a9d5ef831a0049dad9a6b2b92d02301352c38; version=e842f9a1edf306bf36fe2a4d847a0b0d458770de <b74030fbf187b43c1f85b66a7082e9946511cb5d

Published CVSS scores

7.1TenableCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
7.1TenableCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
5.6TenableAV:L/AC:L/Au:N/C:P/I:N/A:C
4.1Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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