wifi: rtw88: fix device leak on probe failure

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Summary

CVECVE-2026-31604
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-24 15:16:39 UTC
Updated2026-04-29 19:21:26 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: wifi: rtw88: fix device leak on probe failure Driver core holds a reference to the USB interface and its parent USB device while the interface is bound to a driver and there is no need to take additional references unless the structures are needed after disconnect. This driver takes a reference to the USB device during probe but does not to release it on all probe errors (e.g. when descriptor parsing fails). Drop the redundant device reference to fix the leak, reduce cargo culting, make it easier to spot drivers where an extra reference is needed, and reduce the risk of further memory leaks.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.000210000 probability, percentile 0.057430000 (date 2026-04-27)

Problem Types: CWE-401

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected a82dfd33d1237f6c0fb8a7077022189d1fc7ec98 f632987306bce9242cdfcf911ee0b2c9455e05a3 git Not specified
CNA Linux Linux affected a82dfd33d1237f6c0fb8a7077022189d1fc7ec98 a4f4371d194dfa5473cc961f86194084b1b13a69 git Not specified
CNA Linux Linux affected a82dfd33d1237f6c0fb8a7077022189d1fc7ec98 89a9c1bc7d797120bcc290864e0cb10a440a677f git Not specified
CNA Linux Linux affected a82dfd33d1237f6c0fb8a7077022189d1fc7ec98 af7307e96dad00bcc2675dac650d8558a52f2c6f git Not specified
CNA Linux Linux affected a82dfd33d1237f6c0fb8a7077022189d1fc7ec98 25a827b7e1d5747a255bdc757f1d3e9e1e8a4e2a git Not specified
CNA Linux Linux affected a82dfd33d1237f6c0fb8a7077022189d1fc7ec98 bbb15e71156cd9f5e1869eee7207a06ea8e96c39 git Not specified
CNA Linux Linux affected 6.2 Not specified
CNA Linux Linux unaffected 6.2 semver Not specified
CNA Linux Linux unaffected 6.6.136 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.83 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.24 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.14 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0.1 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/89a9c1bc7d797120bcc290864e0cb10a440a677f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/bbb15e71156cd9f5e1869eee7207a06ea8e96c39 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/25a827b7e1d5747a255bdc757f1d3e9e1e8a4e2a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/f632987306bce9242cdfcf911ee0b2c9455e05a3 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/a4f4371d194dfa5473cc961f86194084b1b13a69 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/af7307e96dad00bcc2675dac650d8558a52f2c6f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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