CVE-2026-97483: Linux kernel · usb: core: hcd: fix possible deadlock in rh control transfers
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 for this vulnerability has been implemented in the Linux kernel. Users should update to a patched kernel version to remediate the issue. Since this is a kernel-level fix, applying the official kernel updates from the Linux distribution vendor is the recommended mitigation.
Description
A vulnerability in the Linux kernel's USB core host controller driver (hcd) involving possible deadlock in root hub control transfers has been resolved. The issue arises from memory allocations in the SCSI error handler that must not trigger IO, as resetting a device involves control transfers to the root hub. The problem has existed since the storage driver was merged and affects specific Linux kernel versions.
References
- ubuntu.com/security/CVE-2026-97483 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-97483 (opens in a new tab)
- git.kernel.org/stable/c/d5559f43d76b398392b26a15cbc16d731969cd1c (opens in a new tab)
- git.kernel.org/stable/c/549672a3fb6b36ea408238f89ecf9f41d2da6225 (opens in a new tab)
- git.kernel.org/stable/c/fff917c85d37a294397c5440a795591ca9d6b602 (opens in a new tab)
- nvd.nist.gov/vuln/detail/CVE-2026-97483 (opens in a new tab)
- git.kernel.org/stable/c/8461eda5af77c44d216cec66455bd5b01ee35c9a (opens in a new tab)
- git.kernel.org/stable/c/8f82fc3d72e5feb7a1efae94b51b431c5bf41c86 (opens in a new tab)
- git.kernel.org/stable/c/936b08d87c667031725bcc753007e7c1182548c6 (opens in a new tab)
- git.kernel.org/stable/c/d0291fb4d91982d9f6a680bf759ff0555d351ecb (opens in a new tab)