CVE-2026-72337: Linux kernel · Bluetooth: 6lowpan: avoid untracked enable work
Affects Linux kernelSource GCVE Database
Not known to be exploited · fixed in 7.0.0-1014.14~24.04.1 : update Linux kernel when convenient.
Data as of 26 Oct 2026, 13:47 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 7.0.0-1014.14~24.04.1, 7.0.0-1017.17~24.04.1, 7.0.0-1016.16~24.04.1 +11
Exploitation evidence
Disclosed: evidence found.
CVE published 15 Aug 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
Upgrade to a fixed release listed under Affected software.
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 patch is available that changes the asynchronous work scheduling in lowpan_enable_set() to a synchronous operation, preventing the race condition. Users should apply the official Linux kernel updates for linux-aws as provided by their vendor. No additional mitigation steps are indicated by the vendor advisory.
Description
A use-after-free vulnerability in the Linux kernel Bluetooth 6lowpan subsystem was resolved. The issue involved asynchronous work scheduled by lowpan_enable_set() that could run after the module's debugfs files and related state were torn down, leading to a use-after-free condition. This flaw could cause kernel instability or crashes. The fix changes the enable state transition to run synchronously, preventing the race condition. The vulnerability affects specific linux-aws kernel versions and has a low severity rating.
References
- nvd.nist.gov/vuln/detail/CVE-2026-72337 (opens in a new tab)
- git.kernel.org/stable/c/352a59dc1f4a41314b6f827c17e16af7ca88271a (opens in a new tab)
- git.kernel.org/stable/c/feb3fc2c38ed52003142f31e04109719b200c049 (opens in a new tab)
- ubuntu.com/security/CVE-2026-72337 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-72337 (opens in a new tab)
- git.kernel.org/linus/352a59dc1f4a41314b6f827c17e16af7ca88271a (opens in a new tab)
- ubuntu.com/security/notices/USN-8888-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8889-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8887-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8888-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-8887-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-8887-3 (opens in a new tab)