Medium 5.5Published Jun 26, 2026

CVE-2026-53305usb: typec: ps883x: Fix Oops at unbind

Updated under an hour ago (Oct 27, 2026, 1:00 PM ET)

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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=0000000000000000 [ 436.544548] Internal error: Oops: 0000000096000004 [#1] SMP [ 436.550374] Modules linked in: [ 436.553542] CPU: 2 UID: 0 PID: 671 Comm: bash Tainted: G W 7.0.0-rc3-g56fcdd0911a5-dirty #2 PREEMPT [ 436.564440] Tainted: [W]=WARN [ 436.567515] Hardware name: LENOVO 91B6CTO1WW/3796, BIOS O6NKT3BA 05/02/2025 [ 436.574675] pstate: 21400005 (nzCv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--) [ 436.581841] pc : ps883x_retimer_remove+0x14/0x94 [ 436.586605] lr : i2c_device_remove+0x28/0x84 [ 436.591017] sp : ffff8000847137c0 That's because the ps883x_retimer_remove() retrieves the driver data from i2c_get_clientdata() which was never set at probe. So, add i2c_set_clientdata() at the end of the probe.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: Jun 26, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	257a087c8b5206e046048de6053fc8b3fa1af814 builds before 37a3d1b6827783f26d2f8e6c7683e253ba79ae93; from 257a087c8b5206e046048de6053fc8b3fa1af814 before c404d0ac0cb085cb7077ba32c334cc4042feb81a; from 257a087c8b5206e046048de6053fc8b3fa1af814 before 381133848a033c2086cf9cafb226f425bd0414ff	CNA record
linux linux_kernel linux:linux_kernel	from 6.15 before 6.18.33; from 6.19 before 7.0.10	NVD

References

References

https://git.kernel.org/stable/c/37a3d1b6827783f26d2f8e6c7683e253ba79ae93	patch
https://git.kernel.org/stable/c/c404d0ac0cb085cb7077ba32c334cc4042feb81a	patch
https://git.kernel.org/stable/c/381133848a033c2086cf9cafb226f425bd0414ff	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.