CVE-2021-47273

Summary

In the Linux kernel, the following vulnerability has been resolved:

usb: dwc3-meson-g12a: fix usb2 PHY glue init when phy0 is disabled

When only PHY1 is used (for example on Odroid-HC4), the regmap init code uses the usb2 ports when doesn't initialize the PHY1 regmap entry.

This fixes: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000020 … pc : regmap_update_bits_base+0x40/0xa0 lr : dwc3_meson_g12a_usb2_init_phy+0x4c/0xf8 … Call trace: regmap_update_bits_base+0x40/0xa0 dwc3_meson_g12a_usb2_init_phy+0x4c/0xf8 dwc3_meson_g12a_usb2_init+0x7c/0xc8 dwc3_meson_g12a_usb_init+0x28/0x48 dwc3_meson_g12a_probe+0x298/0x540 platform_probe+0x70/0xe0 really_probe+0xf0/0x4d8 driver_probe_device+0xfc/0x168 …

Affected Software

VendorProductVersion RangeStatus
LinuxLinux013af227f58a97ffc61b99301f8f4448dc7e7f55 < 750a0d75564293be3ed50f13ef7f38ab75106421affected
LinuxLinux013af227f58a97ffc61b99301f8f4448dc7e7f55 < d8dd3754e707104a34f8ec595034d503ea8871a2affected
LinuxLinux013af227f58a97ffc61b99301f8f4448dc7e7f55 < 4d2aa178d2ad2fb156711113790dde13e9aa2376affected
LinuxLinux5.8affected
LinuxLinux0 < 5.8unaffected
LinuxLinux5.10.44 <= 5.10.*unaffected
LinuxLinux5.12.11 <= 5.12.*unaffected
LinuxLinux5.13 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

CVE Program Container

Additional References

References