CVE-2026-98404Hinoki check available

Kernel crash via incorrect framebuffer error return

Published Oct 14, 2026 · Updated Oct 14, 2026

NULL dereference in Linux's virtio GPU driver allows local users to trigger a kernel crash through failed framebuffer creation. virtio_gpu_user_framebuffer_create() returns NULL instead of an error pointer after initialization fails, so drm_mode_addfb2() treats failure as success and dereferences NULL. Reachability requires access to the affected DRM device and an initialization failure; the public patch does not demonstrate attacker control of that failure or establish a privilege-escalation outcome.

CVSS severityUnavailable
Unscored
EPSS probability0.22%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

NULL dereference in Linux's virtio GPU driver allows local users to trigger a kernel crash through failed framebuffer creation. virtio_gpu_user_framebuffer_create() returns NULL instead of an error pointer after initialization fails, so drm_mode_addfb2() treats failure as success and dereferences NULL. Reachability requires access to the affected DRM device and an initialization failure; the public patch does not demonstrate attacker control of that failure or establish a privilege-escalation outcome.

The record

CVE
CVE-2026-98404
Published
Oct 14, 2026
Updated
Oct 14, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Oct 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 14, 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=4.2
  2. Affected versionversion=dc5698e80cf724770283e10414054662bdf6ccfa <07de0b31dd64094cd7d25729beaf2ecae74daa72
  3. Affected versionversion=dc5698e80cf724770283e10414054662bdf6ccfa <3fe8a33715265ecb24ca0bcd0a575c926da4277c
  4. Affected versionversion=dc5698e80cf724770283e10414054662bdf6ccfa <45dc2788a5b0e1e2824d1f98af521bd3acc340d7
  5. Affected versionversion=dc5698e80cf724770283e10414054662bdf6ccfa <5eda6cda0031ba17559d56882353be39e568ec09
  6. Affected versionversion=dc5698e80cf724770283e10414054662bdf6ccfa <94579f24e2b526a04eb41050af0ba018c6f528e7
  7. Affected versionversion=dc5698e80cf724770283e10414054662bdf6ccfa <974845d2535a250b180e62f9ed50284f312c01a3
  8. Affected versionversion=dc5698e80cf724770283e10414054662bdf6ccfa <975f3cf302bb7d7336df4c630a7c07e12780ad10
  9. Affected versionversion=dc5698e80cf724770283e10414054662bdf6ccfa <f1050a7d365283678b253828739d3866ae546a72

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=4.2; version=dc5698e80cf724770283e10414054662bdf6ccfa <07de0b31dd64094cd7d25729beaf2ecae74daa72; version=dc5698e80cf724770283e10414054662bdf6ccfa <3fe8a33715265ecb24ca0bcd0a575c926da4277c; version=dc5698e80cf724770283e10414054662bdf6ccfa <45dc2788a5b0e1e2824d1f98af521bd3acc340d7; version=dc5698e80cf724770283e10414054662bdf6ccfa <5eda6cda0031ba17559d56882353be39e568ec09; version=dc5698e80cf724770283e10414054662bdf6ccfa <94579f24e2b526a04eb41050af0ba018c6f528e7; version=dc5698e80cf724770283e10414054662bdf6ccfa <974845d2535a250b180e62f9ed50284f312c01a3; version=dc5698e80cf724770283e10414054662bdf6ccfa <975f3cf302bb7d7336df4c630a7c07e12780ad10; version=dc5698e80cf724770283e10414054662bdf6ccfa <f1050a7d365283678b253828739d3866ae546a72

Published CVSS scores

No CVSS assessment is available in this record.

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.

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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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Application or System Exploitation

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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