rtm_get_nexthop() · ipv4: nexthop: allocate skb dynamically
Affects MicrosoftSource GCVE Database
Not known to be exploited · fixed in 635038fe19db391117e66b46bdc2b6e447ac801d : update Microsoft when convenient.
Data as of 30 Oct 2026, 11:52 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
Thin evidence
One scorer or none- EPSS
- 0.1% chance of exploitation in 30 days – higher than 5% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 635038fe19db391117e66b46bdc2b6e447ac801d, 615517f3f8d53b0cf41507c7599971e17adfdfa5, 40bd39e383a0478fd5c221f393df05fd9d70cfbc +3
Exploitation evidence
Disclosed: evidence found.
CVE published 23 Apr 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 30 Oct 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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Description
CVE-2026-31531 is a vulnerability related to the IPv4 nexthop allocation process in Microsoft software versions 2.0 and 3.0. The issue involves dynamically allocating socket buffers (skb) in the rtm_get_nexthop() function. No detailed technical or impact information is provided, and no CVSS score is assigned.