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CVE-2021-47471

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CVE-2021-47471

Published: May 22, 2024

Modified: May 11, 2026

PUBLISHED

Description

In the Linux kernel, the following vulnerability has been resolved: drm: mxsfb: Fix NULL pointer dereference crash on unload The mxsfb->crtc.funcs may already be NULL when unloading the driver, in which case calling mxsfb_irq_disable() via drm_irq_uninstall() from mxsfb_unload() leads to NULL pointer dereference. Since all we care about is masking the IRQ and mxsfb->base is still valid, just use that to clear and mask the IRQ.

VendorProductVersions

Linux

Linux

affected
ae1ed0093281939b80664a687689f12436c0e874 - < f40c2281d2c0674d32ba732fee45222d76495472
affected
ae1ed0093281939b80664a687689f12436c0e874 - < b0e6db0656ddfd8bb57303c2ef61ee1c1cc694a8
affected
ae1ed0093281939b80664a687689f12436c0e874 - < 3cfc183052c3dbf8eae57b6c1685dab00ed3db4a

Linux

Linux

affected
5.10
unaffected
0 - < 5.10
unaffected
5.10.76 - <= 5.10.*
unaffected
5.14.15 - <= 5.14.*
unaffected
5.15 - <= *

References

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