CVE-2026-72447: Linux kernel · sctp: hold socket lock when dumping endpoints in sctp_diag
Affects Linux kernelSource GCVE Database
Not known to be exploited · fixed in 5.15.0-1117.124~20.04.1 : update Linux kernel when convenient.
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 12% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 5.15.0-1117.124~20.04.1, 5.15.0-1123.132~20.04.1, 5.15.0-1122.131~20.04.1 +41
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 and should be applied to affected linux-azure kernel versions. The vendor advisory confirms the issue is fixed in updated kernel releases. Users should update to the fixed versions listed in the affectedVersions field to mitigate this vulnerability.
Description
A vulnerability in the Linux kernel's SCTP diagnostic endpoint dumping was fixed. The issue involved traversing endpoint address lists without holding the necessary socket lock, leading to a race condition where uninitialized memory could be leaked to userspace. The fix involved proper locking, reference counting, and traversal rework to prevent this race. This vulnerability affects specific linux-azure kernel versions and has a medium severity rating.
References
- nvd.nist.gov/vuln/detail/CVE-2026-72447 (opens in a new tab)
- git.kernel.org/stable/c/207bb4ce8fe7de961ae7bb33569ad2cd61f44954 (opens in a new tab)
- git.kernel.org/stable/c/722576aba0a6d9423714550b1c03239b0f0def77 (opens in a new tab)
- git.kernel.org/stable/c/7d8297e26b4e20b5d1c3c3fe51fe81a1c7fbc823 (opens in a new tab)
- git.kernel.org/stable/c/8b38e3dcfde3077dbc03eb8ef88e03cc19f70b8a (opens in a new tab)
- git.kernel.org/stable/c/abe7f8828e6ac8be858870c2bf836258844f97d5 (opens in a new tab)
- git.kernel.org/stable/c/ec3c2d59a192e17e1014ba71afc368ba162ecac3 (opens in a new tab)
- git.kernel.org/stable/c/f09a245f33e567b604efa1960b7a2d25dd9c8713 (opens in a new tab)
- git.kernel.org/stable/c/f98c294a9369b6fe89e652c06357ee594be4dfa2 (opens in a new tab)
- ubuntu.com/security/CVE-2026-72447 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-72447 (opens in a new tab)
- git.kernel.org/linus/7d8297e26b4e20b5d1c3c3fe51fe81a1c7fbc823 (opens in a new tab)
- ubuntu.com/security/notices/USN-8876-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8878-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8879-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8877-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8875-1 (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)