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CVE-2026-99033VulnerabilityPublished Updated

packet_rcv_spkt() · net/packet: guard the ll header push

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-99033· High

Not known to be exploited · fixed in d8a24b9e1774a93943caf68d48c5e17be432220b : patch Microsoft soon.

Data as of 7 Nov 2026, 12:47 UTC

Severity
High

Rated by Threat Radar · CVSS not yet scored by NVD

Thin evidence

One scorer or none
Patch
Available – fixed in d8a24b9e1774a93943caf68d48c5e17be432220b, b880df0e487caa85c3c7ffda37dcd05334b1aa80, 48aa1155fa8d83362fc33d02d527a3c3fe40ce1c +6

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 23 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 7 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • >=5.9.13 <5.10
Fixed in
  • d8a24b9e1774a93943caf68d48c5e17be432220b
  • b880df0e487caa85c3c7ffda37dcd05334b1aa80
  • 48aa1155fa8d83362fc33d02d527a3c3fe40ce1c
  • 31c7b15b3716e8d0dad58d2c3cdf321dfd06f4be
  • 28bc1ef699610ee09ce3d46a00552f5a0a0144bd
  • 7f84ed94ccfe36091234a2891b88356dc06e6d66
  • 5.10
  • 3efe0e0944157fdd2072b4dc7eb0491a317ed272
  • 00fbf71e74115f7628fc0880b855434b1e70c40c
LinuxLinuxAffected
  • =5.10
Fixed in–

Description

CVE-2026-99033 is a vulnerability related to the net/packet component, specifically concerning guarding the ll header push in the packet_rcv_spkt() function. The affected Microsoft product versions are 3.0 and 4.0. No CVSS score or detailed impact information is provided.

References

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