PatchTheCVECVE-2026-100074: In the Linux kernel, the following vulnerability has been resolved: bpf: Mark bpf_refcount field as unique B
CVE-2026-100074 is a medium-severity flaw (CVSS 5.5) affecting linux kernel. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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.
Why this priority
- On your watchlist
A fixed release or distro patch exists.
Risk facts
| CVSS score | 5.5 (Medium) |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 0.2% (top 95%) |
| CISA exploited list | No |
| Published | 2026-09-25 |
| Last modified | 2026-10-21 |
Last updated 2026-10-21 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Advisories and coverage
Official advisories
- Amazon Linux 2023 ALAS: ALAS2023-2026-3192 (important): kernel6.18 2026-10-12
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-100074?
linux kernel: upgrade to 6.18.52, 7.2.6. Exact commands for each OS are on this page.
Is CVE-2026-100074 being exploited?
CVE-2026-100074 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-100074 affect?
CVE-2026-100074 affects linux kernel. Severity is medium (CVSS 5.5). 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.
How urgent is CVE-2026-100074?
Priority 25/100. On your watchlist
Software pages
Related CVEs
- CVE-2026-63893 HIGH 8.1 UPGRADE In the Linux kernel, the following vulnerability has been resolved: thunderbolt: property: Reject u32 wrap in
- CVE-2026-63888 CRITICAL 9.8 UPGRADE In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsi: Fix CRC overread and
- CVE-2026-63885 HIGH 8.8 UPGRADE In the Linux kernel, the following vulnerability has been resolved: drm/gem: fix race between change_handle a
- CVE-2026-63884 HIGH 7.8 UPGRADE In the Linux kernel, the following vulnerability has been resolved: drm/i915: Fix potential UAF in TTM object
- CVE-2026-63881 HIGH 7.8 UPGRADE In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: fix a vulnerability of intege