VulnerabilityPublished 18 Oct 2026

CVE-2026-98523: Linux kernel · drm/client: fix restore of partially initialized client

Source GCVE Database

Authoritative record:CVE-2026-98523· High

Not known to be exploited · fixed in fcbedba553a9c430079ee225df2dc7ab556a2f83 : patch Linux kernel soon.

Data as of 26 Oct 2026, 14:05 UTC

Severity

High

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in fcbedba553a9c430079ee225df2dc7ab556a2f83, a69c4b678db808c0d89abb8cedeaaac38d1ef182, 11edd5b6735d2e1069ddce672b1836713647f7fb +2

Exploitation evidence

Disclosed: evidence found.
CVE published 18 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

ghsa-hc5h-vrq3-w82j

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected >=6.12.19 <6.12.112	Fixed in fcbedba553a9c430079ee225df2dc7ab556a2f83 a69c4b678db808c0d89abb8cedeaaac38d1ef182 11edd5b6735d2e1069ddce672b1836713647f7fb 6.12.112 1fca688e9443003e33cf30453e7a7560367656c9
LinuxLinux	Affected =6.13	Fixed in–

AI-suggested

A fix has been implemented in the Linux kernel to check the framebuffer device initialization state before attempting to restore it, thereby preventing the NULL pointer dereference. Users should update to a Linux kernel version that includes this fix. Since this is a kernel-level issue, applying the official kernel patch or upgrading to a fixed kernel release is the recommended remediation.

Description

A vulnerability in the Linux kernel's Direct Rendering Manager (DRM) subsystem was resolved that could cause a NULL pointer dereference when closing a DRM file descriptor. This occurs due to a partially initialized framebuffer device client remaining registered after a failed initialization, leading to an invalid restore operation. The issue results in a kernel warning and a NULL pointer dereference during cleanup.

References

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