CVE-2026-23366
NULL Pointer Dereference in Linux Kernel DRM Client Modeset
Publication date: 2026-03-25
Last updated on: 2026-04-24
Assigner: kernel.org
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| linux | linux_kernel | 6.16 |
| linux | linux_kernel | From 6.19 (inc) to 6.19.7 (exc) |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | From 6.16.1 (inc) to 6.18.17 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-476 | The product dereferences a pointer that it expects to be valid but is NULL. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability occurs in the Linux kernel's drm/client component. Specifically, in the drm_client_modeset_probe function, if the allocation of 'modes' using kcalloc fails, the code jumps to an error handling section where it calls modes_destroy on the 'modes' pointer without checking if it is NULL. This leads to a NULL pointer dereference in the error case.
How can this vulnerability impact me? :
The impact of this vulnerability is a potential NULL pointer dereference in the Linux kernel's DRM client code. This can cause a kernel crash or system instability when the error handling code attempts to destroy a NULL 'modes' pointer.