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CVE-2026-100074

Linux: bpf: Mark bpf_refcount field as unique

Linux LinuxOperating systems
Open in ThreatlineRecord JSON
CVSS
NoneNot scored
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.11%Chance of exploitation activity in the next 30 days, higher than 1% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in015f9fbcf3382c5eb563a157ee8cabb6fbfcfe5eAlso 20b3c72c1b83054c568d2322a95e217fdc281bc3, 641f814965d733936ca3618d4d5a12a8fa9be00e and 1 moreCVE List
Published25 Sep 2026Updated 21 Oct 2026CVE List

What fixes it

  • 015f9fbcf3382c5eb563a157ee8cabb6fbfcfe5eLinuxCVE List
  • 20b3c72c1b83054c568d2322a95e217fdc281bc3LinuxCVE List
  • 641f814965d733936ca3618d4d5a12a8fa9be00eLinuxCVE List
  • 61e655391cb19c31f94ecd4354f624c81ce4cf75LinuxCVE List

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

In the Linux kernel, the following vulnerability has been resolved:

bpf: Mark bpf_refcount field as unique

BPF_REFCOUNT is not marked as a unique field, while it should be. Fix this oversight.

Text from CVE List

Affected versions 12

  • Linuxaffected: d54730b50bae1f3119bd686d551d66f0fcc387ca before 015f9fbcf3382c5eb563a157ee8cabb6fbfcfe5eCVE List
  • Linuxaffected: d54730b50bae1f3119bd686d551d66f0fcc387ca before 20b3c72c1b83054c568d2322a95e217fdc281bc3CVE List
  • Linuxaffected: d54730b50bae1f3119bd686d551d66f0fcc387ca before e42cede6f90177f4f92f80d3de18f628e61d2087CVE List
  • Linuxaffected: d54730b50bae1f3119bd686d551d66f0fcc387ca before 641f814965d733936ca3618d4d5a12a8fa9be00eCVE List
  • Linuxaffected: d54730b50bae1f3119bd686d551d66f0fcc387ca before 61e655391cb19c31f94ecd4354f624c81ce4cf75CVE List
  • Linuxaffected: 6.4CVE List
  • Linuxunaffected: all versions before 6.4CVE List
  • Linuxunaffected: 6.6.160 through 6.6.*CVE List
  • Linuxunaffected: 6.12.114 through 6.12.*CVE List
  • Linuxunaffected: 6.18.52 through 6.18.*CVE List
  • Linuxunaffected: 7.2.6 through 7.2.*CVE List
  • Linuxunaffected: 7.3CVE List

References 5