CVE-2026-97539: Linux kernel · usb: xusbatm: don't rely on id table pointer arithmetic
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 26 Oct 2026, 16:39 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 11% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Exploitation evidence
Disclosed: evidence found.
CVE published 25 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 implemented in the Linux kernel to address this issue by avoiding pointer arithmetic on the ID table and disabling dynamic ID support for the xusbatm driver. Users should update to a kernel version that includes this fix. Patch status is not explicitly stated; check the vendor advisory or Linux kernel updates for the fixed versions.
Description
A vulnerability in the Linux kernel's usb subsystem (xusbatm driver) was resolved. The issue involved incorrect pointer arithmetic on the USB device ID table when dynamic IDs are used, leading to out-of-bounds indexing. The fix involved avoiding reliance on pointer arithmetic and disabling dynamic ID support for xusbatm.
References
- ubuntu.com/security/CVE-2026-97539 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-97539 (opens in a new tab)
- git.kernel.org/stable/c/fad6cab36474758abf55c6419dd79a06a27fcefc (opens in a new tab)
- git.kernel.org/stable/c/8944ef1bfda537aaf329c82e7a5f9faf61340aa9 (opens in a new tab)
- git.kernel.org/stable/c/eb6cd6d3d8abeac5d7e8251b898067184afdad8a (opens in a new tab)
- git.kernel.org/stable/c/f7db611d98b68d15661561d2cefa774208774ccc (opens in a new tab)
- nvd.nist.gov/vuln/detail/CVE-2026-97539 (opens in a new tab)
- git.kernel.org/stable/c/5086f5639197f321b766cec0dce383492eaf2305 (opens in a new tab)
- git.kernel.org/stable/c/ee4006c2175e8b50ff5d47a54bff52eb29bb1f0d (opens in a new tab)