CVE-2026-53706
Prevail eBPF verifier bug lets crafted BPF bypass checks and crash or corrupt the kernel.
Is CVE-2026-53706 being exploited?
Not confirmed. CVE-2026-53706 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.29% probability of exploitation in the next 30 days.
How severe is CVE-2026-53706?
CVE-2026-53706 is rated High with a CVSS score of 8.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-53706?
Yes. A fix has been recorded for CVE-2026-53706. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-53706 affect?
CVE-2026-53706 affects prevail < 0.2.4, Linux kernels that allow unprivileged BPF loading, Apps embedding prevail eBPF verifier. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-53706?
Upgrade prevail to >=0.2.4 and disable or restrict unprivileged BPF loading until patched.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Verifier bypass can zero pointer high bits causing kernel memory corruption, crashes, or local privilege escalation via crafted eBPF programs.
Immediate action required
- affected< 0.2.4
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.