do_tcp_getsockopt(TCP_CONGESTION) · tcp: fix use-after-free
Affects MicrosoftSource GCVE Database
Not known to be exploited · fixed in c1804ef016392dd91267d2207ee43b1de34302ca : patch Microsoft soon.
Data as of 29 Oct 2026, 11:48 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
Thin evidence
One scorer or none- Patch
- Available – fixed in c1804ef016392dd91267d2207ee43b1de34302ca, a8e45471afa230c1431c26c8e99ec24377e3b514, 5271b79b7ad68dcb222e893773f92bdabf7750f3
Exploitation evidence
Disclosed: evidence found.
CVE published 28 Oct 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 Linux to c1804ef016392dd91267d2207ee43b1de34302ca, a8e45471afa230c1431c26c8e99ec24377e3b514 or 5271b79b7ad68dcb222e893773f92bdabf7750f3.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in– |
Description
A use-after-free vulnerability exists in the TCP implementation related to the do_tcp_getsockopt function when handling TCP_CONGESTION. This flaw affects Microsoft product version 3.0. No CVSS score or detailed impact information is provided.