CVE-2026-93117

usb: fix UAF when probe runs concurrent to dyn ID removal

State: Published
Severity: Not scored
Published: Sep 17, 2026
Updated: Oct 19, 2026
Reserved: Sep 17, 2026

Description

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

usb: fix UAF when probe runs concurrent to dyn ID removal

Dynamic IDs are only guaranteed to be valid when usb_dynids_lock is held, as remove_id_store can free the node. Thus, make a copy in usb_probe_interface. Clarify the documentation that the id parameter is only valid during the probe.

USB serial has the same pattern, but it does not need fixing as the IDs cannot be removed via sysfs.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	0c7a2b72746a96f999fd2728520d03d94879be69 to before 9b82ddf76827e2a8ff033a8131ecf24f2d6cae26Affected 0c7a2b72746a96f999fd2728520d03d94879be69 to before 44904468e58d3dc3a0229782acbeb9677b060541Affected 0c7a2b72746a96f999fd2728520d03d94879be69 to before 64320c6e721bdec4c43a789c866c8a099dd0c843Affected 0c7a2b72746a96f999fd2728520d03d94879be69 to before 7e795801295c84a6bbc10a3e7a4c99c50bfe45acAffected 0c7a2b72746a96f999fd2728520d03d94879be69 to before e6a9c6b79b70046afdf5a1dbd03b1104536f30c0Affected 0c7a2b72746a96f999fd2728520d03d94879be69 to before ef8154d8b52d60338c1fd8d793cd8e891c604c14Affected
LinuxLinux	2.6.33Affected before 2.6.33Not affected 6.1.188 through 6.1.Not affected 6.6.157 through 6.6.Not affected 6.12.110 through 6.12.Not affected 6.18.52 through 6.18.Not affected 7.2.6 through 7.2.*Not affected 7.3 and laterNot affected

Product

Versions

LinuxLinux

0c7a2b72746a96f999fd2728520d03d94879be69 to before 9b82ddf76827e2a8ff033a8131ecf24f2d6cae26Affected
0c7a2b72746a96f999fd2728520d03d94879be69 to before 44904468e58d3dc3a0229782acbeb9677b060541Affected
0c7a2b72746a96f999fd2728520d03d94879be69 to before 64320c6e721bdec4c43a789c866c8a099dd0c843Affected
0c7a2b72746a96f999fd2728520d03d94879be69 to before 7e795801295c84a6bbc10a3e7a4c99c50bfe45acAffected
0c7a2b72746a96f999fd2728520d03d94879be69 to before e6a9c6b79b70046afdf5a1dbd03b1104536f30c0Affected
0c7a2b72746a96f999fd2728520d03d94879be69 to before ef8154d8b52d60338c1fd8d793cd8e891c604c14Affected

LinuxLinux

2.6.33Affected
before 2.6.33Not affected
6.1.188 through 6.1.*Not affected
6.6.157 through 6.6.*Not affected
6.12.110 through 6.12.*Not affected
6.18.52 through 6.18.*Not affected
7.2.6 through 7.2.*Not affected
7.3 and laterNot affected

References

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