CVE-2026-93822: Linux kernel · PCI: iproc: Protect root bus removal with rescan lock
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 26 Oct 2026, 14:05 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 6% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Exploitation evidence
Disclosed: evidence found.
CVE published 24 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.04 LTSlinuxpkg:deb/ubuntu/linux?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azure-fdepkg:deb/ubuntu/linux-azure-fde?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gkepkg:deb/ubuntu/linux-gke?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A fix has been applied to the Linux kernel to hold the pci_rescan_remove_lock lock during root bus removal, preventing race conditions. Users should update to a patched kernel version to remediate this vulnerability. Patch status is not explicitly confirmed in the input data, so users should consult their Linux distribution vendor advisories for the official fixed versions and updates.
Description
A vulnerability in the Linux kernel related to PCI iproc root bus removal has been resolved. The issue involved a race condition where the pci_rescan_remove_lock was not held during stopping and removing a root bus, potentially causing use-after-free errors or system crashes. This race could occur with concurrent rescan or hotplug operations triggered via sysfs. The fix ensures the lock is held to prevent these race conditions.
References
- ubuntu.com/security/CVE-2026-93822 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-93822 (opens in a new tab)
- git.kernel.org/stable/c/a6a64e150f12ad5391e0a0d60f6a3d119b06ce50 (opens in a new tab)
- git.kernel.org/stable/c/bd2bf1e0d973c93fc1637b90cbb9a5a5f6884bd3 (opens in a new tab)
- git.kernel.org/stable/c/ee06aafc2d760a4ee023e0b2e95ce1ec71bddc6c (opens in a new tab)
- nvd.nist.gov/vuln/detail/CVE-2026-93822 (opens in a new tab)
- git.kernel.org/stable/c/1618e374ba4c7117c04662422ef985e9d64e2466 (opens in a new tab)
- git.kernel.org/stable/c/4e1d34d824050a4e700ca442f815a95d9f214b83 (opens in a new tab)
- git.kernel.org/stable/c/aaf4153caed9f1760b9f266612b0599bfd97150c (opens in a new tab)
- git.kernel.org/stable/c/e7d9d7be2c1f8d434032983bc86a05805178c9c9 (opens in a new tab)