CVE-2026-90297
Published Sep 17, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: drm/sun4i: crtc: Propagate layer initialization error sun4i_crtc_init() returns plain NULL when layer initialization fails, while all its other error paths return an error pointer. The only caller, sun4i_tcon_bind(), checks the result with IS_ERR() and happily continues with tcon->crtc set to NULL. sun4i_rgb_init() and sun4i_lvds_init() then dereference it in drm_crtc_mask(), which oopses. Return the error pointer instead.
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References
Other References
https://git.kernel.org/stable/c/1882112124a642de7571fbf354fa1929decbb3ef
https://git.kernel.org/stable/c/2bb3169788f8296c8fc1e0d4fa6f1c6367cd5829
https://git.kernel.org/stable/c/65bc02fec98e4e1d7d59d86cf2ddf8fd73dacb89
https://git.kernel.org/stable/c/7061ff05ed4a3cf16e83f7e3ad09cbd212508a32
https://git.kernel.org/stable/c/8f32af44d43332c02198752e596df00659bf4354
https://git.kernel.org/stable/c/aaf812960fb5ade24be7a1d8fea27a1ffc458c30
https://git.kernel.org/stable/c/c0d3219ffd4c0d42295e0dc949856067b7818b71
https://git.kernel.org/stable/c/e216d6168f25a69e5ae5b981ee73b3a860a46441
Frequently Asked Questions
What is CVE-2026-90297? +
In the Linux kernel, the following vulnerability has been resolved:
drm/sun4i: crtc: Propagate layer initialization error
sun4i_crtc_init() returns plain NULL when layer initialization fails,
while all its other error paths return an error pointer. The only
caller, sun4i_tcon_bind(), checks the result with IS_ERR() and happily
continues with tcon->crtc set to NULL. sun4i_rgb_init() and
sun4i_lvds_init() then dereference it in drm_crtc_mask(), which
oopses.
Return the error pointer instead.
How do I check if I'm vulnerable to CVE-2026-90297? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.