CVE-2026-68303

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.

Package Linux Kernel
Published 2026-08-10
Last modified 2026-09-21
Patch available
Yes

Affected versions

Linux kernel versions 4.4 and later are affected. Fixed in 6.12.111, 6.18.53, 7.1.6, 7.2 and their respective stable series.

Affected from
≥ 4.4
Fixed in
✓ 6.12.111 6.12.x ✓ 6.18.53 6.18.x ✓ 7.1.6 7.1.x ✓ 7.2

References

4 total

Frequently asked questions

  • What is CVE-2026-68303?

    CVE-2026-68303 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 4.4 onward and has been patched in 6.12.111, 6.18.53, 7.1.6 and others. CVE-2026-68303 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • Is there a patch available for CVE-2026-68303?

    Yes. CVE-2026-68303 has been patched. Fixed versions include 6.12.111, 6.18.53, 7.1.6 and others. If you are running Linux kernel 4.4 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2026-68303 actively exploited?

    No. CVE-2026-68303 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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