Microsoft · net: stmmac: fix oops when split header is enabled
Affects MicrosoftSource GCVE Database
Not known to be exploited · fixed in babab1b42ed68877ef669a08384becf281ad2582 : update Microsoft when convenient.
Data as of 29 Oct 2026, 19:04 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in babab1b42ed68877ef669a08384becf281ad2582, b1f23df09e7dbf4c86b6908dff7efb8cb2b7d609, 107e169f963920b11fa3c1bb384c077fe7330696 +2
Exploitation evidence
Disclosed: evidence found.
CVE published 27 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: 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 29 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in– |
AI-suggested
If you cannot patch yet, avoid enabling the split header feature if possible.
Description
CVE-2026-45940 is a vulnerability in Microsoft software related to the 'net: stmmac' component that causes a system crash (oops) when the split header feature is enabled. The issue is identified in version 3.0 of the affected product. No CVSS score or detailed technical impact is provided.