CVE-2026-89982

i2c: mux: Fix channel node leak on adapter add failure

State: Published
Severity: Not scored
Published: Sep 16, 2026
Updated: Oct 19, 2026
Reserved: Sep 11, 2026

Description

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

i2c: mux: Fix channel node leak on adapter add failure

i2c_mux_add_adapter() takes a reference to the Device Tree channel node before registering the new adapter. If adapter registration fails, the error path frees the private data without dropping that reference.

Release the channel node before freeing the private data.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	bc45449b1444611d68466ae7f45f235420d79019 to before 4f42f70afd2447f3c82ca69d1e03466a75348ba9Affected bc45449b1444611d68466ae7f45f235420d79019 to before 4c9bc46a2a4afb7a11c48d33bdf19febab431015Affected bc45449b1444611d68466ae7f45f235420d79019 to before dd2c1e6747b17b24ecddd48a7bb6bb964c2793d1Affected bc45449b1444611d68466ae7f45f235420d79019 to before 0927153f2abf48b6cc3e5f27063a17f7a8d47f38Affected bc45449b1444611d68466ae7f45f235420d79019 to before b580f062b24c4eef562f08f210c028adb34ef14eAffected bc45449b1444611d68466ae7f45f235420d79019 to before 2b3b06cb709c4bf75a3fe3da3a0ca368ee3b40e5Affected bc45449b1444611d68466ae7f45f235420d79019 to before 694e7e6edf249723ca7d3ef77c2ca1badfc78dc4Affected bc45449b1444611d68466ae7f45f235420d79019 to before 385c7af4e3b95d0769fd211831674e83b16a2ebfAffected
LinuxLinux	3.5Affected before 3.5Not affected 5.10.270 through 5.10.Not affected 5.15.221 through 5.15.Not 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 6.18.51 through 6.18.Not affected 7.2.5 through 7.2.*Not affected 7.3 and laterNot affected

Product

Versions

LinuxLinux

bc45449b1444611d68466ae7f45f235420d79019 to before 4f42f70afd2447f3c82ca69d1e03466a75348ba9Affected
bc45449b1444611d68466ae7f45f235420d79019 to before 4c9bc46a2a4afb7a11c48d33bdf19febab431015Affected
bc45449b1444611d68466ae7f45f235420d79019 to before dd2c1e6747b17b24ecddd48a7bb6bb964c2793d1Affected
bc45449b1444611d68466ae7f45f235420d79019 to before 0927153f2abf48b6cc3e5f27063a17f7a8d47f38Affected
bc45449b1444611d68466ae7f45f235420d79019 to before b580f062b24c4eef562f08f210c028adb34ef14eAffected
bc45449b1444611d68466ae7f45f235420d79019 to before 2b3b06cb709c4bf75a3fe3da3a0ca368ee3b40e5Affected
bc45449b1444611d68466ae7f45f235420d79019 to before 694e7e6edf249723ca7d3ef77c2ca1badfc78dc4Affected
bc45449b1444611d68466ae7f45f235420d79019 to before 385c7af4e3b95d0769fd211831674e83b16a2ebfAffected

LinuxLinux

3.5Affected
before 3.5Not affected
5.10.270 through 5.10.*Not affected
5.15.221 through 5.15.*Not 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
6.18.51 through 6.18.*Not affected
7.2.5 through 7.2.*Not affected
7.3 and laterNot affected

References

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