CVE-2026-93819

PCI: mediatek: Protect root bus removal with rescan lock

N/A

Published: September 24, 2026 at 04:02 PM UTC

Updated: October 3, 2026 at 11:17 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

N/A

Exploit prediction

EPSS 0.2%

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]

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

4.20 ≤ v < 5.10.2714.20 ≤ v < 5.15.2224.20 ≤ v < 6.1.1894.20 ≤ v < 6.12.1114.20 ≤ v < 6.18.534.20 ≤ v < 6.6.1584.20 ≤ v < 7.231337ace2d1c22a447da6390716fe92592cdd6e4.20

Vendor states this is fixed in 31e33dcc896527b3ad790fdc6aa6b8d2995c078b (fixed)

Vendor states this is fixed in 5dd379acfa38c516e904bcfa693502cd585a0bba (fixed)

Vendor states this is fixed in 8d910649725955435c6a807944108bca0570712d (fixed)

Vendor states this is fixed in a29812a55da8d0dbeb071b26ac428c338e3fc389 (fixed)

Vendor states this is fixed in a568939487dcbc1a3e341208585e224be897e25e (fixed)

Vendor states this is fixed in c57b971765f835138fa2fce3f2a171b004cbb114 (fixed)

Vendor states this is fixed in d54417acb22d9e8bc404a8598330bc9729ee7146 (fixed)

Vendor states this is fixed in 4.20 (unaffected)

Vendor states this is fixed in 5.10.271 (unaffected)

Vendor states this is fixed in 5.15.222 (unaffected)

Vendor states this is fixed in 6.1.189 (unaffected)

Vendor states this is fixed in 6.12.111 (unaffected)