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PUBLISHED

CVE-2021-47165

drm/meson: fix shutdown crash when component not probed

Reserved:2024-03-25
Published:2024-03-25
Updated:2024-04-04

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.

Product status

Default status
unaffected

8a5160cc8488 before b4298d33c1fc
affected

8fbbf2b38494 before e256a0eb43e1
affected

d2100ef32a8c before 4ce2bf20b4a6
affected

d4ec1ffbdaa8 before d66083c0d6f5
affected

fa0c16caf3d7 before b4b91033a0b1
affected

fa0c16caf3d7 before 7cfc4ea78fc1
affected

Default status
affected

5.12
affected

Any version before 5.12
unaffected

4.14.235
unaffected

4.19.193
unaffected

5.4.124
unaffected

5.10.42
unaffected

5.12.9
unaffected

5.13
unaffected

References

https://git.kernel.org/stable/c/b4298d33c1fcce511ffe84d8d3de07e220300f9b

https://git.kernel.org/stable/c/e256a0eb43e17209e347409a80805b1659398d68

https://git.kernel.org/stable/c/4ce2bf20b4a6e307e114847d60b2bf40a6a1fac0

https://git.kernel.org/stable/c/d66083c0d6f5125a4d982aa177dd71ab4cd3d212

https://git.kernel.org/stable/c/b4b91033a0b11fe9ade58156cd9168f89f4a8c1a

https://git.kernel.org/stable/c/7cfc4ea78fc103ea51ecbacd9236abb5b1c490d2

cve.org CVE-2021-47165

nvd.nist.gov CVE-2021-47165

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