CVE-2026-64279

i2c: core: fix adapter deregistration race

State: Published
Severity: 7.8 High
Published: Jul 25, 2026
Updated: Oct 19, 2026
Reserved: Jul 19, 2026

Description

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

i2c: core: fix adapter deregistration race

Adapters can be looked up by their id using i2c_get_adapter() which takes a reference to the embedded struct device.

Remove the adapter from the IDR before tearing it down during deregistration (and on registration failure) to make sure its resources are not accessed after having been freed (e.g. the device name).

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Affected Products

Product	Versions
LinuxLinux	35fc37f8188177e3ba3e7f99a6e3300e490e9181 to before d39282f552dd6c35b9b84b4af78f1198c24f3373Affected 35fc37f8188177e3ba3e7f99a6e3300e490e9181 to before 11dfa37bf544cc806f21742ca2fd2d841bd7032eAffected 35fc37f8188177e3ba3e7f99a6e3300e490e9181 to before 9882a9bd74db08e7bae5821a7050627ae92d3380Affected 35fc37f8188177e3ba3e7f99a6e3300e490e9181 to before bb234487a447a99315add1b46aa57b72e163e1ebAffected 35fc37f8188177e3ba3e7f99a6e3300e490e9181 to before b6d2af6fe9c1f5ec0484536753c979cbd40a8ac3Affected 35fc37f8188177e3ba3e7f99a6e3300e490e9181 to before 35dbd1f1f603401155cbd3a180bb18e3a3b675b8Affected 35fc37f8188177e3ba3e7f99a6e3300e490e9181 to before b1a58ed9eab146b36f41a55db8f5d7ce9fdedf3fAffected
LinuxLinux	2.6.31Affected before 2.6.31Not affected 5.15.212 through 5.15.Not affected 6.1.178 through 6.1.Not affected 6.6.145 through 6.6.Not affected 6.12.96 through 6.12.Not affected 6.18.39 through 6.18.Not affected 7.1.4 through 7.1.Not affected 7.2 and laterNot affected

Product

Versions

LinuxLinux

35fc37f8188177e3ba3e7f99a6e3300e490e9181 to before d39282f552dd6c35b9b84b4af78f1198c24f3373Affected
35fc37f8188177e3ba3e7f99a6e3300e490e9181 to before 11dfa37bf544cc806f21742ca2fd2d841bd7032eAffected
35fc37f8188177e3ba3e7f99a6e3300e490e9181 to before 9882a9bd74db08e7bae5821a7050627ae92d3380Affected
35fc37f8188177e3ba3e7f99a6e3300e490e9181 to before bb234487a447a99315add1b46aa57b72e163e1ebAffected
35fc37f8188177e3ba3e7f99a6e3300e490e9181 to before b6d2af6fe9c1f5ec0484536753c979cbd40a8ac3Affected
35fc37f8188177e3ba3e7f99a6e3300e490e9181 to before 35dbd1f1f603401155cbd3a180bb18e3a3b675b8Affected
35fc37f8188177e3ba3e7f99a6e3300e490e9181 to before b1a58ed9eab146b36f41a55db8f5d7ce9fdedf3fAffected

LinuxLinux

2.6.31Affected
before 2.6.31Not affected
5.15.212 through 5.15.*Not affected
6.1.178 through 6.1.*Not affected
6.6.145 through 6.6.*Not affected
6.12.96 through 6.12.*Not affected
6.18.39 through 6.18.*Not affected
7.1.4 through 7.1.*Not affected
7.2 and laterNot affected

References

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