net: usb: asix_devices: add phy_mask for ax88772 mdio bus

Summary

In the Linux kernel, the following vulnerability has been resolved: net: usb: asix_devices: add phy_mask for ax88772 mdio bus Without setting phy_mask for ax88772 mdio bus, current driver may create at most 32 mdio phy devices with phy address range from 0x00 ~ 0x1f. DLink DUB-E100 H/W Ver B1 is such a device. However, only one main phy device will bind to net phy driver. This is creating issue during system suspend/resume since phy_polling_mode() in phy_state_machine() will directly deference member of phydev->drv for non-main phy devices. Then NULL pointer dereference issue will occur. Due to only external phy or internal phy is necessary, add phy_mask for ax88772 mdio bus to workarnoud the issue.

Timeline

1. Sep 4, 2025, 3:33 PM UTCCVE published
2. Oct 15, 2026, 1:07 AM UTCRecord last updated

Affected versions

• Linux Linux

  From e532a096be0e5e570b383e71d4560e7f04384e0f · fixed in 75947d3200de98a9ded9ad8972e02f1a177097fe; From e532a096be0e5e570b383e71d4560e7f04384e0f · fixed in 59ed6fbdb1bc03316e09493ffde7066f031c7524; From e532a096be0e5e570b383e71d4560e7f04384e0f · fixed in ccef5ee4adf56472aa26bdd1f821a6d0cd06089a; From e532a096be0e5e570b383e71d4560e7f04384e0f · fixed in ee2cd40b0bb46056949a2319084a729d95389386; From e532a096be0e5e570b383e71d4560e7f04384e0f · fixed in a754ab53993b1585132e871c5d811167ad3c52ff; From e532a096be0e5e570b383e71d4560e7f04384e0f · fixed in ad1f8313aeec0115f9978bd2d002ef4a8d96c773; From e532a096be0e5e570b383e71d4560e7f04384e0f · fixed in 4faff70959d51078f9ee8372f8cff0d7045e4114

• Linux Linux

  5.14

• KernelLinux

  From 5.14.0 · fixed in 5.15.190; From 5.16.0 · fixed in 6.1.149; From 6.2.0 · fixed in 6.6.103; From 6.7.0 · fixed in 6.12.43; From 6.13.0 · fixed in 6.15.11; From 6.16.0 · fixed in 6.16.2

References 7