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Review reviewHigh

CVE-2023-54083

Linux

In the Linux kernel, the following vulnerability has been resolved: phy: tegra: xusb: Clear the driver reference in usb-phy dev For the dual-role port, it will assign the phy dev to usb-phy dev and use the port dev driver as the dev driver of usb-phy. When we try to destroy the port dev, it will destroy its dev driver as well. But we did not remove the reference from usb-phy dev. This might cause the use-after-free issue in KASAN.

CVSS
7.8
EPSS
0.14%
3.74% percentile
CISA KEV
Not listed
Published
2025.12.24
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.14%
Technical severityCVSS 7.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: phy: tegra: xusb: Clear the driver reference in usb-phy dev For the dual-role port, it will assign the phy dev to usb-phy dev and use the port dev driver as the dev driver of usb-phy. When we try to destroy the port dev, it will destroy its dev driver as well. But we did not remove the reference from usb-phy dev. This might cause the use-after-free issue in KASAN.

Affected product and versions

Product
Linux
Affected versions
>= e8f7d2f409a15c519d5a6085777d85c1c4bab73a < b6a107c52073496d2e5d2837915f59fb3103832f, >= e8f7d2f409a15c519d5a6085777d85c1c4bab73a < b84998a407a882991916b1a61d987c400d8a0ce6, >= e8f7d2f409a15c519d5a6085777d85c1c4bab73a < 238edc04ddb9d272b38f5419bcd419ad3b92b91b, >= e8f7d2f409a15c519d5a6085777d85c1c4bab73a < 82187460347ad58fd6b06d2883da73c3f2df9631, >= e8f7d2f409a15c519d5a6085777d85c1c4bab73a < c0c2fcb1325d0d4f3b322b5ee49385f8eca2560d, >= 5.7
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
Not available