sock_ops · bpf: Fix out-of-bounds read of rtt_min
Affects MicrosoftSource GCVE Database
Not known to be exploited · fixed in fd6bf2721933d8c90bc4ce57f3e204c9295e7e3f : patch Microsoft soon.
Data as of 2 Nov 2026, 08:46 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
- Patch
- Available – fixed in fd6bf2721933d8c90bc4ce57f3e204c9295e7e3f, fc9d0e6e9d86fbefe7b8fe6ee49f4cf102add79d, cba54d142c43ec96d8c4d566f66439e8c0afded7 +5
Exploitation evidence
Disclosed: evidence found.
CVE published 18 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 1 Nov 2026.
What to do
Upgrade to a fixed release listed under Affected software.
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
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
Description
CVE-2026-98643 is a vulnerability in Microsoft software involving an out-of-bounds read of the rtt_min variable in the sock_ops component of the BPF subsystem. The flaw could potentially lead to memory access issues. The affected versions are Microsoft versions 3.0 and 4.0. No CVSS score or detailed impact information is provided, and no known exploits are reported in the wild.