CVE-2026-98110: Linux kernel · Bluetooth: btintel: bound firmware ID by TLV length
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 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 is available that bounds the firmware ID processing by the TLV length to prevent out-of-bounds reads. Users should apply the updated Linux kernel versions that include this patch. No additional mitigations are indicated.
Description
A vulnerability in the Linux kernel's Bluetooth component (btintel) was resolved. The issue involves improper handling of the firmware ID, which is treated as a NUL-terminated string despite only having a TLV length boundary. This can cause snprintf() to read beyond the intended buffer if the firmware ID lacks a NUL terminator. The fix limits the conversion to the advertised TLV value length.
References
- ubuntu.com/security/CVE-2026-98110 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-98110 (opens in a new tab)
- git.kernel.org/stable/c/ac8aa9e0ec93a12a60230066f199f49c3b9aac3d (opens in a new tab)
- git.kernel.org/stable/c/aef56a2bd5aa22808ce508605d7497d2b5e8eb5f (opens in a new tab)
- git.kernel.org/stable/c/a07b3024a927892dd46e7dfbed438e8834e24098 (opens in a new tab)
- git.kernel.org/stable/c/058f56de5f48ba4b3be01526006ac83ce9e79f39 (opens in a new tab)