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CVE-2026-93821

UnknownEPSS 0.17%

Last modified

CVE-2026-93821 is a vulnerability of currently unknown severity. In the Linux kernel, the following vulnerability has been resolved: PCI: altera: 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]. EPSS estimates a 0.17% chance of exploitation in the next 30 days.

Description

In the Linux kernel, the following vulnerability has been resolved: PCI: altera: 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]

Metrics

EPSS Probability
0.17%

5.3th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22, < cf9d84d1b6a7c3f3780c043df220a7e9e38137eb; >= ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22, < fc462f1bdeaea9789928cbfdf5e069ee559c7642; >= ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22, < 442b7f2a093b4a75f8963aaa7cbb2b8df35a6ac3; >= ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22, < 4b69c63cc247fc0f499fbd11076fee9c2a6e6fd7; >= ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22, < c0cd65906e5f7e293ef2568c9524cc0a918333c3; >= ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22, < 7cbb8f2750d91e64caff89e164ac8280bb80bedc; >= ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22, < a8759c8ac48c0419f5899e95a6ffc611b07c965b
LinuxLinux5.3

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-93821?
In the Linux kernel, the following vulnerability has been resolved: PCI: altera: 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]
How severe is CVE-2026-93821?
Severity scoring for CVE-2026-93821 is pending analysis. The EPSS model estimates a 0.17% probability of exploitation in the next 30 days.
How do I fix CVE-2026-93821?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST