CVEvulnerability

CVE-2021-47165

5.5 MEDIUM Published 2024-03-25 Modified 2026-06-17 Official page ↗
Status
Analyzed
Published
2024-03-25
Last modified
2026-06-17
Assigner
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS 3.1 ([email protected])
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-476

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.

Affected configurations

• linux linux kernel (>= 4.14.226 < 4.14.235) • linux linux kernel (>= 4.19.181 < 4.19.193) • linux linux kernel (>= 5.4.106 < 5.4.124) • linux linux kernel (>= 5.10.24 < 5.10.42) • linux linux kernel (>= 5.12 < 5.12.9) • linux linux kernel 5.13

Related

Weakness · CWE (1)

  • CWE-476 NULL Pointer Dereference weakness

References