CVE-2021-47165

drm/meson: fix shutdown crash when component not probed

Description

In the Linux kernel, the following vulnerability has been resolved: drm/meson: fix shutdown crash when component not probed When main component is not probed, by example when the dw-hdmi module is not loaded yet or in probe defer, the following crash appears on shutdown: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000038 ... pc : meson_drv_shutdown+0x24/0x50 lr : platform_drv_shutdown+0x20/0x30 ... Call trace: meson_drv_shutdown+0x24/0x50 platform_drv_shutdown+0x20/0x30 device_shutdown+0x158/0x360 kernel_restart_prepare+0x38/0x48 kernel_restart+0x18/0x68 __do_sys_reboot+0x224/0x250 __arm64_sys_reboot+0x24/0x30 ... Simply check if the priv struct has been allocated before using it.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.01%
Affected: Linux Linux
Affected: Linux Linux
Published at:
Updated at:

References

Link Tags
https://git.kernel.org/stable/c/b4298d33c1fcce511ffe84d8d3de07e220300f9b patch
https://git.kernel.org/stable/c/e256a0eb43e17209e347409a80805b1659398d68 patch
https://git.kernel.org/stable/c/4ce2bf20b4a6e307e114847d60b2bf40a6a1fac0 patch
https://git.kernel.org/stable/c/d66083c0d6f5125a4d982aa177dd71ab4cd3d212 patch
https://git.kernel.org/stable/c/b4b91033a0b11fe9ade58156cd9168f89f4a8c1a patch
https://git.kernel.org/stable/c/7cfc4ea78fc103ea51ecbacd9236abb5b1c490d2 patch

Frequently Asked Questions

What is the severity of CVE-2021-47165?
CVE-2021-47165 has been scored as a medium severity vulnerability.
How to fix CVE-2021-47165?
To fix CVE-2021-47165, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-47165 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-47165 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-47165?
CVE-2021-47165 affects Linux Linux, Linux Linux.
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