cve-2021-47471
Vulnerability from cvelistv5
Published
2024-05-22 06:23
Modified
2024-08-04 05:39
Severity
Summary
drm: mxsfb: Fix NULL pointer dereference crash on unload
References
SourceURLTags
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3cfc183052c3dbf8eae57b6c1685dab00ed3db4a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b0e6db0656ddfd8bb57303c2ef61ee1c1cc694a8
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f40c2281d2c0674d32ba732fee45222d76495472
Impacted products
VendorProduct
LinuxLinux
LinuxLinux
Show details on NVD website

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    "nvd": "{\"cve\":{\"id\":\"CVE-2021-47471\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-22T07:15:11.847\",\"lastModified\":\"2024-05-22T12:46:53.887\",\"vulnStatus\":\"Awaiting Analysis\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ndrm: mxsfb: Fix NULL pointer dereference crash on unload\\n\\nThe mxsfb-\u003ecrtc.funcs may already be NULL when unloading the driver,\\nin which case calling mxsfb_irq_disable() via drm_irq_uninstall() from\\nmxsfb_unload() leads to NULL pointer dereference.\\n\\nSince all we care about is masking the IRQ and mxsfb-\u003ebase is still\\nvalid, just use that to clear and mask the IRQ.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: drm: mxsfb: corrige el fallo de desreferencia del puntero NULL al descargar Es posible que mxsfb-\u0026gt;crtc.funcs ya sea NULL al descargar el controlador, en cuyo caso se llama a mxsfb_irq_disable() a trav\u00e9s de drm_irq_uninstall() desde mxsfb_unload() conduce a la desreferencia del puntero NULL. Dado que lo \u00fanico que nos importa es enmascarar la IRQ y mxsfb-\u0026gt;base sigue siendo v\u00e1lido, simplemente util\u00edcelo para borrar y enmascarar la IRQ.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/3cfc183052c3dbf8eae57b6c1685dab00ed3db4a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b0e6db0656ddfd8bb57303c2ef61ee1c1cc694a8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f40c2281d2c0674d32ba732fee45222d76495472\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
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