CVE-2026-93098Hinoki check available

Module-removal hang via recursive device mutex acquisition

Published Sep 17, 2026 · Updated Sep 17, 2026

Linux's GLINK endpoint teardown deadlock allows local users to hang module removal indefinitely by detaching an rpmsg driver. The qcom_glink_destroy_ept function redundantly unregisters the rpmsg device, causing device_del to acquire a device mutex already held by the driver-detach path. The reported FastRPC removal path requires module-removal privileges and GLINK-backed rpmsg teardown; the documented consequence is a stuck removal operation, not a demonstrated system-wide crash.

CVSS severity4.4
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

Linux's GLINK endpoint teardown deadlock allows local users to hang module removal indefinitely by detaching an rpmsg driver. The qcom_glink_destroy_ept function redundantly unregisters the rpmsg device, causing device_del to acquire a device mutex already held by the driver-detach path. The reported FastRPC removal path requires module-removal privileges and GLINK-backed rpmsg teardown; the documented consequence is a stuck removal operation, not a demonstrated system-wide crash.

The record

CVE
CVE-2026-93098
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=24fd02c3a4798de7dc94b55d36a1685fe6cdaf69 <bbc236357876d35a624030e5c50eedbc380be98e
  2. Affected versionversion=32fe8cdf541863239b81c80b8b04112d6e8792cf <8597f669a5268e0dcf243e2b2d6ca00370117057
  3. Affected versionversion=5.10.248 <5.10.270
  4. Affected versionversion=5.15.198 <5.15.221
  5. Affected versionversion=6.1.160 <6.1.188
  6. Affected versionversion=6.12.64 <6.12.110
  7. Affected versionversion=6.18.3 <6.18.52
  8. Affected versionversion=6.19
  9. Affected versionversion=6.6.120 <6.6.157
  10. Affected versionversion=93b6b9e4acff4794e7426d3ad64ef14e3b3e8919 <73092c2292aa65515671e54abbcda2166d3827ed
  11. Affected versionversion=a53e356df548f6b0e82529ef3cc6070f42622189 <5a5a48e788e02fd8a8eb7188ce440572d6c12418
  12. Affected versionversion=a53e356df548f6b0e82529ef3cc6070f42622189 <e559626bee8a6632aafc08eedcdb4bf26ca245c5
  13. Affected versionversion=c6210714347f72bae8e7142dc0a7f99923c466e7 <48f55b90f0d713e477e26b85d7327d9592d016f9
  14. Affected versionversion=f80e4e91b010ee7d6c52f24d069975ac955ac6b2 <ecad679e2b92c419cc22cc8f257cd457d5192647
  15. Affected versionversion=fcab5c2672f8dac3d77013dbe047b2441f4141f5 <cbcdf96e1c87bc07055d04264018ded1f3bafffb

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=24fd02c3a4798de7dc94b55d36a1685fe6cdaf69 <bbc236357876d35a624030e5c50eedbc380be98e; version=32fe8cdf541863239b81c80b8b04112d6e8792cf <8597f669a5268e0dcf243e2b2d6ca00370117057; version=5.10.248 <5.10.270; version=5.15.198 <5.15.221; version=6.1.160 <6.1.188; version=6.12.64 <6.12.110; version=6.18.3 <6.18.52; version=6.19; version=6.6.120 <6.6.157; version=93b6b9e4acff4794e7426d3ad64ef14e3b3e8919 <73092c2292aa65515671e54abbcda2166d3827ed; version=a53e356df548f6b0e82529ef3cc6070f42622189 <5a5a48e788e02fd8a8eb7188ce440572d6c12418; version=a53e356df548f6b0e82529ef3cc6070f42622189 <e559626bee8a6632aafc08eedcdb4bf26ca245c5; version=c6210714347f72bae8e7142dc0a7f99923c466e7 <48f55b90f0d713e477e26b85d7327d9592d016f9; version=f80e4e91b010ee7d6c52f24d069975ac955ac6b2 <ecad679e2b92c419cc22cc8f257cd457d5192647; version=fcab5c2672f8dac3d77013dbe047b2441f4141f5 <cbcdf96e1c87bc07055d04264018ded1f3bafffb

Published CVSS scores

4.4Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
4.4SUSECVSS:3.1/AV:L/AC:L/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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