CVE-2026-98697: Linux kernel · USB: serial: fix dynamic id driver deregistration race
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 28 Oct 2026, 04:57 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
Exploitation evidence
Disclosed: evidence found.
CVE published 18 Oct 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 is available that corrects the order of operations during driver deregistration to prevent ID leaks. Users should apply the updated Linux kernel versions that include this fix to mitigate the vulnerability.
Description
A race condition vulnerability in the Linux kernel's USB serial driver was fixed by ensuring dynamic IDs are only freed after the driver deregistration and removal of the 'new_id' attribute. This prevents leaking IDs added by concurrent writes to the attribute.
References
- ubuntu.com/security/CVE-2026-98697 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-98697 (opens in a new tab)
- git.kernel.org/stable/c/380f57cd58e26e0f3687451196ec446c473c52d9 (opens in a new tab)
- git.kernel.org/stable/c/63594e8ffe097bc0b7639936f33799a7653dded2 (opens in a new tab)
- git.kernel.org/stable/c/ebd8fcaaacb66c15ae7e19d14619abe3762e0701 (opens in a new tab)
- git.kernel.org/stable/c/4d6da6867b4ac6468d634a0dd3c35dfc0dc8af81 (opens in a new tab)