CVE-2026-74416

Kernel memory exhaustion via Radeon reset leak

Published Aug 15, 2026 · Updated Aug 15, 2026

Memory leak in the Radeon ring restore path in Linux 3.6 and later allows local users to exhaust kernel memory through repeated GPU resets. When radeon_ring_lock() fails, radeon_ring_restore() returns without freeing the ring backup buffer whose ownership it accepted. Access to a Radeon GPU and repeated reset-time lock failures are required, with each failure consuming additional kernel memory.

CVSS severity5.5
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leak in the Radeon ring restore path in Linux 3.6 and later allows local users to exhaust kernel memory through repeated GPU resets. When radeon_ring_lock() fails, radeon_ring_restore() returns without freeing the ring backup buffer whose ownership it accepted. Access to a Radeon GPU and repeated reset-time lock failures are required, with each failure consuming additional kernel memory.

The record

CVE
CVE-2026-74416
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=3.6
  2. Affected versionversion=55d7c22192becd0ec827a6901899ff56fa985658 <06dc892561f5a08b2493c34c8ec2cb94dea33159
  3. Affected versionversion=55d7c22192becd0ec827a6901899ff56fa985658 <07c213f3499dd72e2922c1c73fe9ffea24874bef
  4. Affected versionversion=55d7c22192becd0ec827a6901899ff56fa985658 <1c9ba32308c02c198c378fcdf06be9ffc3111147
  5. Affected versionversion=55d7c22192becd0ec827a6901899ff56fa985658 <63912418f1fbb6456ea04bbcdf8f4d5090d23350
  6. Affected versionversion=55d7c22192becd0ec827a6901899ff56fa985658 <82f1d6042611d45b8b9de423bbcb4e0ced9ec62b
  7. Affected versionversion=55d7c22192becd0ec827a6901899ff56fa985658 <919e3e398bf301c6418dffdcd5e5c4fd9be39cf7
  8. Affected versionversion=55d7c22192becd0ec827a6901899ff56fa985658 <ccc42187fc2d0720947a63ce1b9e399d2c068ff4
  9. Affected versionversion=55d7c22192becd0ec827a6901899ff56fa985658 <eecfb76129ebef7e3aa41e18a4668cd91dfc6267

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.6; version=55d7c22192becd0ec827a6901899ff56fa985658 <06dc892561f5a08b2493c34c8ec2cb94dea33159; version=55d7c22192becd0ec827a6901899ff56fa985658 <07c213f3499dd72e2922c1c73fe9ffea24874bef; version=55d7c22192becd0ec827a6901899ff56fa985658 <1c9ba32308c02c198c378fcdf06be9ffc3111147; version=55d7c22192becd0ec827a6901899ff56fa985658 <63912418f1fbb6456ea04bbcdf8f4d5090d23350; version=55d7c22192becd0ec827a6901899ff56fa985658 <82f1d6042611d45b8b9de423bbcb4e0ced9ec62b; version=55d7c22192becd0ec827a6901899ff56fa985658 <919e3e398bf301c6418dffdcd5e5c4fd9be39cf7; version=55d7c22192becd0ec827a6901899ff56fa985658 <ccc42187fc2d0720947a63ce1b9e399d2c068ff4; version=55d7c22192becd0ec827a6901899ff56fa985658 <eecfb76129ebef7e3aa41e18a4668cd91dfc6267

Published CVSS scores

5.5SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
2.5Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L

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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

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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