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CVE-2021-47471

drm: mxsfb: Fix NULL pointer dereference crash on unload PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected ae1ed0093281939b80664a687689f12436c0e874 before f40c2281d2c0674d32ba732fee45222d76495472; affected ae1ed0093281939b80664a687689f12436c0e874 before b0e6db0656ddfd8bb57303c2ef61ee1c1cc694a8; affected ae1ed0093281939b80664a687689f12436c0e874 before 3cfc183052c3dbf8eae57b6c1685dab00ed3db4a
Linux / Linuxaffected 5.10; unaffected 0 before 5.10; unaffected 5.10.76 through 5.10.*; unaffected 5.14.15 through 5.14.*; unaffected 5.15 through *

CWE

No CWE identifiers supplied.

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.

CVE

No English description supplied.