CVE-2026-93819

PCI: mediatek: Protect root bus removal with rescan lock

State: Published
Severity: Not scored
Published: Sep 24, 2026
Updated: Oct 3, 2026
Reserved: Sep 18, 2026

Description

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

PCI: mediatek: Protect root bus removal with rescan lock

Hold the pci_rescan_remove_lock lock while stopping and removing a root bus to avoid racing with concurrent rescan or hotplug operations triggered via sysfs. Such races may lead to use-after-free issues or system crashes.

[bhelgaas: commit log]

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	031337ace2d1c22a447da6390716fe92592cdd6e to before d54417acb22d9e8bc404a8598330bc9729ee7146Affected 031337ace2d1c22a447da6390716fe92592cdd6e to before 5dd379acfa38c516e904bcfa693502cd585a0bbaAffected 031337ace2d1c22a447da6390716fe92592cdd6e to before 8d910649725955435c6a807944108bca0570712dAffected 031337ace2d1c22a447da6390716fe92592cdd6e to before 31e33dcc896527b3ad790fdc6aa6b8d2995c078bAffected 031337ace2d1c22a447da6390716fe92592cdd6e to before c57b971765f835138fa2fce3f2a171b004cbb114Affected 031337ace2d1c22a447da6390716fe92592cdd6e to before a568939487dcbc1a3e341208585e224be897e25eAffected 031337ace2d1c22a447da6390716fe92592cdd6e to before a29812a55da8d0dbeb071b26ac428c338e3fc389Affected
LinuxLinux	4.20Affected before 4.20Not affected 5.10.271 through 5.10.Not affected 5.15.222 through 5.15.Not affected 6.1.189 through 6.1.Not affected 6.6.158 through 6.6.Not affected 6.12.111 through 6.12.Not affected 6.18.53 through 6.18.Not affected 7.2 and laterNot affected

Product

Versions

LinuxLinux

031337ace2d1c22a447da6390716fe92592cdd6e to before d54417acb22d9e8bc404a8598330bc9729ee7146Affected
031337ace2d1c22a447da6390716fe92592cdd6e to before 5dd379acfa38c516e904bcfa693502cd585a0bbaAffected
031337ace2d1c22a447da6390716fe92592cdd6e to before 8d910649725955435c6a807944108bca0570712dAffected
031337ace2d1c22a447da6390716fe92592cdd6e to before 31e33dcc896527b3ad790fdc6aa6b8d2995c078bAffected
031337ace2d1c22a447da6390716fe92592cdd6e to before c57b971765f835138fa2fce3f2a171b004cbb114Affected
031337ace2d1c22a447da6390716fe92592cdd6e to before a568939487dcbc1a3e341208585e224be897e25eAffected
031337ace2d1c22a447da6390716fe92592cdd6e to before a29812a55da8d0dbeb071b26ac428c338e3fc389Affected

LinuxLinux

4.20Affected
before 4.20Not affected
5.10.271 through 5.10.*Not affected
5.15.222 through 5.15.*Not affected
6.1.189 through 6.1.*Not affected
6.6.158 through 6.6.*Not affected
6.12.111 through 6.12.*Not affected
6.18.53 through 6.18.*Not affected
7.2 and laterNot affected

References

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