CVE-2026-93819
PCI: mediatek: Protect root bus removal with rescan lock
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]
INFO
Published Date :
Sept. 24, 2026, 5:17 p.m.
Last Modified :
Sept. 24, 2026, 5:17 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Apply the provided Linux kernel patch.
- Ensure the rescan lock protects root bus removal.
- Prevent races during hotplug operations.
- Update the system to the patched kernel version.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-93819.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-93819 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-93819
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-93819 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-93819 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Sep. 24, 2026
Action Type Old Value New Value Added 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] Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/93xxx/CVE-2026-93819.json">CVE-2026-93819</a> Added Reference https://git.kernel.org/stable/c/a29812a55da8d0dbeb071b26ac428c338e3fc389 Added Reference https://git.kernel.org/stable/c/a568939487dcbc1a3e341208585e224be897e25e Added Reference https://git.kernel.org/stable/c/c57b971765f835138fa2fce3f2a171b004cbb114