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CVE-2026-98644VulnerabilityPublished Updated

__htab_map_lookup_and_delete_batch() · bpf: Avoid soft lockup

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-98644· Medium

Not known to be exploited · fixed in f0c09de08ec077098b7e1563f2285f1c136cd816 : update Microsoft when convenient.

Data as of 2 Nov 2026, 10:58 UTC

Severity
Medium

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS
0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in f0c09de08ec077098b7e1563f2285f1c136cd816, ca5bd55fc508fbb5c08c62206d02237a5b6fc7e8, 85136bf22404474a815fc0ed26ec0d1cbc1bc3f9 +4

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 18 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 057996380a42bb64ccc04383cfa9c0ace4ea11f0, < f0c09de08ec077098b7e1563f2285f1c136cd816
Fixed in
  • f0c09de08ec077098b7e1563f2285f1c136cd816
LinuxLinuxAffected
  • ≥ 057996380a42bb64ccc04383cfa9c0ace4ea11f0, < ca5bd55fc508fbb5c08c62206d02237a5b6fc7e8
Fixed in
  • ca5bd55fc508fbb5c08c62206d02237a5b6fc7e8
LinuxLinuxAffected
  • ≥ 057996380a42bb64ccc04383cfa9c0ace4ea11f0, < 85136bf22404474a815fc0ed26ec0d1cbc1bc3f9
Fixed in
  • 85136bf22404474a815fc0ed26ec0d1cbc1bc3f9
LinuxLinuxAffected
  • ≥ 057996380a42bb64ccc04383cfa9c0ace4ea11f0, < 77a3b52b4455e6377e549539e757bc55eedefb51
Fixed in
  • 77a3b52b4455e6377e549539e757bc55eedefb51
LinuxLinuxAffected
  • ≥ 057996380a42bb64ccc04383cfa9c0ace4ea11f0, < 44f9bcb5ab2b268bc763ed3ebec83308b4972936
Fixed in
  • 44f9bcb5ab2b268bc763ed3ebec83308b4972936
LinuxLinuxAffected
  • ≥ 057996380a42bb64ccc04383cfa9c0ace4ea11f0, < 5c8b1869cb99a32a962388848cd19604fb41263e
Fixed in
  • 5c8b1869cb99a32a962388848cd19604fb41263e

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-2026-98644 affects Microsoft products version 3.0 and 4.0. The issue relates to the bpf subsystem and involves avoiding a soft lockup in the __htab_map_lookup_and_delete_batch() function. No CVSS score or detailed impact information is provided.

References

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