CVE-2026-97907: Linux kernel · Bluetooth: btrtl: Don't leak return code when parsing firmware format v2
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
- 0.2% chance of exploitation in 30 days – higher than 9% 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 and has been applied to the affected Linux kernel versions. Users should update to patched versions of the linux-hwe-edge kernel to remediate this issue.
Description
A vulnerability in the Linux kernel's Bluetooth btrtl component was resolved. The issue involved leaking an uninitialized return code when parsing firmware format v2, specifically when the key_id from the chip is zero and security headers are ignored. The flaw caused the function rtlbt_parse_firmware_v2() to leak return codes from previous sections due to improper control flow in a switch statement. This has been fixed by correctly skipping the loop iteration with a continue statement.
References
- ubuntu.com/security/CVE-2026-97907 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-97907 (opens in a new tab)
- git.kernel.org/stable/c/422f6547259654bae690713614c794dd1e2c0a0b (opens in a new tab)
- git.kernel.org/stable/c/c4249cf6e80b1bd62a6a409aaabe760fe025dac3 (opens in a new tab)
- git.kernel.org/stable/c/90f3a142b5f8596a565b8e080d18a8050be6edef (opens in a new tab)
- git.kernel.org/stable/c/83e3e515fd261600ed8491fb0a8bcdfb115c904e (opens in a new tab)
- nvd.nist.gov/vuln/detail/CVE-2026-97907 (opens in a new tab)
- git.kernel.org/stable/c/ba96047bba4a6101267cf4f6b3057cbc58e6c554 (opens in a new tab)