CVE-2026-72414: Linux kernel · net: dsa: sja1105: round up PTP perout pin duration
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, 13:47 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 kernel versions. The vendor advisory confirms the issue is fixed. Users should update to the patched kernel versions to prevent the division by zero error. No additional mitigation actions are indicated by the vendor.
Description
A vulnerability in the Linux kernel's net: dsa: sja1105 driver was resolved. The issue involved the conversion of a user-provided period to hardware clock ticks for PTP perout pin duration, where very small period values could become zero, leading to a division by zero error in future_base_time(). The fix rounds zero durations up to one tick to prevent this error. Multiple specific Linux kernel versions are affected. The vulnerability is rated medium severity and a patch is available.
References
- nvd.nist.gov/vuln/detail/CVE-2026-72414 (opens in a new tab)
- git.kernel.org/stable/c/09efce96c909dff1a9317ec3714b7ddb4751b7af (opens in a new tab)
- git.kernel.org/stable/c/201dcbbfb27f3db85c8cf125a75f3164a83ceb32 (opens in a new tab)
- git.kernel.org/stable/c/28d13a89a211cc07caeef32069eaa847131b7351 (opens in a new tab)
- git.kernel.org/stable/c/410629528067029096dba7ad7bc49e4a5e92708d (opens in a new tab)
- git.kernel.org/stable/c/9952291db7125b8a62bf19800b93dcac81fc70c0 (opens in a new tab)
- git.kernel.org/stable/c/aaf446099ca497c8d9a8e511fedf5d0e547bf8ec (opens in a new tab)
- git.kernel.org/stable/c/aee5836273b07b439fb245fb43930664d8b78518 (opens in a new tab)
- git.kernel.org/stable/c/fc62bfd30d30af07356f0f7121c826e1e753582f (opens in a new tab)
- ubuntu.com/security/CVE-2026-72414 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-72414 (opens in a new tab)
- git.kernel.org/linus/aee5836273b07b439fb245fb43930664d8b78518 (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)