CVE-2026-53305

/// Technical description

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

usb: typec: ps883x: Fix Oops at unbind

When trying to unbind a device in order to bind to it vfio-platform as:

echo bc0000.geniqup > /sys/bus/platform/devices/bc0000.geniqup/driver/unbind

I get the following Oops:

[ 436.478639] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000020

[ 436.487762] Mem abort info:

[ 436.490716] ESR = 0x0000000096000004

[ 436.494595] EC = 0x25: DABT (current EL), IL = 32 bits

[ 436.500071] SET = 0, FnV = 0

[ 436.503250] EA = 0, S1PTW = 0

[ 436.506505] FSC = 0x04: level 0 translation fault

[ 436.511533] Data abort info:

[ 436.514558] ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000

[ 436.520215] CM = 0, WnR = 0, TnD = 0, TagAccess = 0

[ 436.525436] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0

[ 436.530918] user pgtable: 4k pages, 48-bit VAs, pgdp=00000008861a9000

[ 436.537554] [0000000000000020] pgd=0000000000000000, p4d=000000000

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References