CVE-2024-26916

System hang via unflushed GFXOFF work

Published Apr 17, 2024 · Updated May 23, 2026

Improper locking in the Linux AMDGPU suspend path allows local users to deadlock the system by triggering suspend from a GNOME lock screen. The suspend path can enter GFXOFF while lock-screen-triggered SDMA traffic remains active because delayed GFXOFF work is not flushed before suspend. Reachability requires AMD graphics, GNOME lock-screen activity, and permission to suspend the host; the resulting availability loss is a system hang.

CVSS severity5.5
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Improper locking in the Linux AMDGPU suspend path allows local users to deadlock the system by triggering suspend from a GNOME lock screen. The suspend path can enter GFXOFF while lock-screen-triggered SDMA traffic remains active because delayed GFXOFF work is not flushed before suspend. Reachability requires AMD graphics, GNOME lock-screen activity, and permission to suspend the host; the resulting availability loss is a system hang.

The record

CVE
CVE-2024-26916
Published
Apr 17, 2024
Updated
May 23, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-667, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 17, 2024CVE publishedPublication date reported by the CVE source.
  2. May 23, 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=3aae4ef4d799fb3d0381157640fdb251008cf0ae <caa2565a2e13899be31f7b1e069e6465d3e2adb0
  2. Affected versionversion=5.15.144 <5.15.149
  3. Affected versionversion=6.1.69 <6.1.79
  4. Affected versionversion=6.6.8 <6.6.18
  5. Affected versionversion=6.7
  6. Affected versionversion=78b2ba39beef21c8baebb1868569c2026ad76de0 <ff70e6ff6fc2413caf33410af7462d1f584d927e
  7. Affected versionversion=ab4750332dbe535243def5dcebc24ca00c1f98ac <916361685319098f696b798ef1560f69ed96e934
  8. Affected versionversion=ab4750332dbe535243def5dcebc24ca00c1f98ac <d855ceb6a5fde668c5431156bc60fae0cc52b764
  9. Affected versionversion=f94942885e8416ce9de84d8fae93684002682b5d <65158edb0a3a8df23197d52cd24287e39eaf95d6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3aae4ef4d799fb3d0381157640fdb251008cf0ae <caa2565a2e13899be31f7b1e069e6465d3e2adb0; version=5.15.144 <5.15.149; version=6.1.69 <6.1.79; version=6.6.8 <6.6.18; version=6.7; version=78b2ba39beef21c8baebb1868569c2026ad76de0 <ff70e6ff6fc2413caf33410af7462d1f584d927e; version=ab4750332dbe535243def5dcebc24ca00c1f98ac <916361685319098f696b798ef1560f69ed96e934; version=ab4750332dbe535243def5dcebc24ca00c1f98ac <d855ceb6a5fde668c5431156bc60fae0cc52b764; version=f94942885e8416ce9de84d8fae93684002682b5d <65158edb0a3a8df23197d52cd24287e39eaf95d6

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5UbuntuCVSS:3.1/AV:L/AC:L/PR:L/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.

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

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-667Improper Locking
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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo