VulnerabilityPublished 10 Aug 2026Updated 21 Oct 2026

CVE-2026-68303: Linux kernel · drm/vc4: hvs/v3d: Fix null dereference in unbind

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in 708688ec31ac6b35103ba364dc300a09930079d4 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 14:05 UTC

Severity

Unrated

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 708688ec31ac6b35103ba364dc300a09930079d4, 261f0a3f0ac03248284f5116d3258f89c9642215, 8f62aae059e06746a18a00af27179c3c0f17f4c7 +2

Exploitation evidence

Disclosed: evidence found.
CVE published 10 Aug 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.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ c8b75bca92cbf064b9fa125fc74a85994452e935, < 708688ec31ac6b35103ba364dc300a09930079d4	Fixed in 708688ec31ac6b35103ba364dc300a09930079d4
LinuxLinux	Affected ≥ c8b75bca92cbf064b9fa125fc74a85994452e935, < 261f0a3f0ac03248284f5116d3258f89c9642215	Fixed in 261f0a3f0ac03248284f5116d3258f89c9642215
LinuxLinux	Affected ≥ c8b75bca92cbf064b9fa125fc74a85994452e935, < 8f62aae059e06746a18a00af27179c3c0f17f4c7	Fixed in 8f62aae059e06746a18a00af27179c3c0f17f4c7
LinuxLinux	Affected ≥ c8b75bca92cbf064b9fa125fc74a85994452e935, < 7dc3680b7ffe01add3e9299fde8471d2dd53a8ae	Fixed in 7dc3680b7ffe01add3e9299fde8471d2dd53a8ae
LinuxLinux	Affected ≥ c8b75bca92cbf064b9fa125fc74a85994452e935, < 3be8dcc1a5854cf24cc332e0d6fc865c47ff49a1	Fixed in 3be8dcc1a5854cf24cc332e0d6fc865c47ff49a1
LinuxLinux	Affected =4.4	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: drm/vc4: hvs/v3d: Fix null dereference in unbind The hvs and v3d drivers use dev_get_drvdata(master) in their unbind functions. Since the vc4-drm gets removed before its dependent drivers (vc4_hvs/vc4_v3d) the vc4_hvs_unbind/vc4_v3d_unbind functions try to get drvdata of its master and fails with a null dereference error. Use the data pointer passed to the unbind functions directly instead of dev_get_drvdata(master). This avoids using potentially freed memory.

References

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