PCI: mediatek: Protect root bus removal with rescan lock
Priority LOW 22Published · Updated
Key facts
- Attack vector
- —
- Privileges required
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- User interaction
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- Attack complexity
- —
- Impact type
- —
- Confidentiality · integrity · availability
- —
- Fix status
- Fixed
No CVSS vector from any source. Fix status from CNA.
Summary
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]
Why it matters now
EPSS 0.00173 6th percentileScored 2026-11-07
Fix Fixed Linux (Linux): 5.10.271, 5.15.222, 6.1.189 +4
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.111, 6.18.53, 7.2
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 7 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform 4
- Red Hat OpenShift Container Platform 5
Timeline
- 2026-10-02 Threatist record created from CVE-2026-93819
- 2026-10-03 Alias added: GHSA-49r5-mv79-qprq
- 2026-10-03 Fix available: Linux/Linux@31e33dcc896527b3ad790fdc6aa6b8d2995c078b, Linux/[email protected], Linux/[email protected] +5 · CNA
- 2026-10-03 4 new references · CNA
- 2026-11-06 Affected versions changed · Red Hat
References
Other 7
- https://git.kernel.org/stable/c/d54417acb22d9e8bc404a8598330bc9729ee7146
- https://git.kernel.org/stable/c/5dd379acfa38c516e904bcfa693502cd585a0bba
- https://git.kernel.org/stable/c/8d910649725955435c6a807944108bca0570712d
- https://git.kernel.org/stable/c/31e33dcc896527b3ad790fdc6aa6b8d2995c078b
- https://git.kernel.org/stable/c/c57b971765f835138fa2fce3f2a171b004cbb114
- https://git.kernel.org/stable/c/a568939487dcbc1a3e341208585e224be897e25e
- https://git.kernel.org/stable/c/a29812a55da8d0dbeb071b26ac428c338e3fc389
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- TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
Sources
- CVE-2026-93819 · CVE Program
- CVE-2026-93819 · NVD
- FIRST EPSS
- GHSA-49r5-mv79-qprq · GitHub Advisory Database · CC BY 4.0
- CVE-2026-93819 · Red Hat security data · CC BY 4.0
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