skb_checksum_setup_ipv6() · net: skbuff: fix pull-bound underflow
Affects MicrosoftSource GCVE Database
Not known to be exploited · fixed in d7f474226809471dc7877435e9c492cc914df0bf : patch Microsoft soon.
Data as of 2 Nov 2026, 10:58 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 d7f474226809471dc7877435e9c492cc914df0bf, cfa643f2ca36c6f913fe1a2ceb12412ebb0fd962, b2da5ed3d8c75e1b729a21b6d3beaed415e263f6 +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 2 Nov 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | 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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| 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
A vulnerability identified as CVE-2026-98573 affects Microsoft products, specifically versions 3.0 and 4.0. It involves a pull-bound underflow issue in the skb_checksum_setup_ipv6() function within the network socket buffer (skbuff) handling. No CVSS score or detailed impact information is provided.