CVE-2021-47471
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2021-47471
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-47471.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2021-47471
- Downstream
- Related
- Published
- 2024-05-22T07:15:11Z
- Modified
- 2025-08-09T19:01:26Z
- Summary
- [none]
- Details
-
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 mxsfbirqdisable() via drmirquninstall() 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.
- References