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Report · Zero Day InitiativeAbout CVE-2026-99284Published

ZDI-26-1006: Linux Kernel skbuff skb_zerocopy Improper Ownership Management Local Privilege Escalation Vulnerability

Source Zero Day Initiative

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Authoritative record:CVE-2026-99284· High

Not known to be exploited · fixed in fe8477e23dd2ee6bce231d65f2586a333b211dc0 : patch Linux kernel soon.

Data as of 13 Nov 2026, 22:36 UTC

Severity
High

Rated High by Zero Day Initiative · CVSS not yet scored by NVD

Thin evidence

One scorer or none
Patch
Available – fixed in fe8477e23dd2ee6bce231d65f2586a333b211dc0, d7d6ff98d5d1b400f02211f962ac32cc0020aeab, 79dc34beb1fdb3da79753e51e15c68591a2561fe +2

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 7 Nov 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 13 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ af2806f8f90a150160be898cd85332459c83c5cb, < fe8477e23dd2ee6bce231d65f2586a333b211dc0
Fixed in
  • fe8477e23dd2ee6bce231d65f2586a333b211dc0
LinuxLinuxAffected
  • ≥ af2806f8f90a150160be898cd85332459c83c5cb, < d7d6ff98d5d1b400f02211f962ac32cc0020aeab
Fixed in
  • d7d6ff98d5d1b400f02211f962ac32cc0020aeab
LinuxLinuxAffected
  • ≥ af2806f8f90a150160be898cd85332459c83c5cb, < 79dc34beb1fdb3da79753e51e15c68591a2561fe
Fixed in
  • 79dc34beb1fdb3da79753e51e15c68591a2561fe
LinuxLinuxAffected
  • ≥ af2806f8f90a150160be898cd85332459c83c5cb, < 1c623e3cbf43f12dd4a72712079bfa247a9b8ba3
Fixed in
  • 1c623e3cbf43f12dd4a72712079bfa247a9b8ba3
LinuxLinuxAffected
  • ≥ af2806f8f90a150160be898cd85332459c83c5cb, < 1a9c180cd8435917b7516edfb1c9148032c28773
Fixed in
  • 1a9c180cd8435917b7516edfb1c9148032c28773
LinuxLinuxAffected
  • =3.14
Fixed in–

Description

A local privilege escalation vulnerability exists in the Linux Kernel's skbuff skb_zerocopy component. Exploitation requires the attacker to have prior ability to execute low-privileged code on the affected system. The vulnerability has a high severity rating assigned by the Zero Day Initiative and is tracked as CVE-2026-99284.

References

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