Affects Linux kernel core networking; cross-industry impact; potential firewall disruption or DoS.
CVE-2026-43114
Linux kernel netfilter AVX2 bug in nft_set_pipapo expiry
Is CVE-2026-43114 being exploited?
Not confirmed. CVE-2026-43114 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 0.37% probability of exploitation in the next 30 days.
How severe is CVE-2026-43114?
CVE-2026-43114 is rated Critical with a CVSS score of 9.4. 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-2026-43114?
Yes. A fix has been recorded for CVE-2026-43114. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-43114 affect?
CVE-2026-43114 affects Linux kernel (netfilter nft_set_pipapo_avx2). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-43114?
Apply kernel update with fix
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
AVX2 path may skip valid entries and return stale matches, risking firewall rule disruption or kernel instability.
Patch when possible
- affected>= 7400b063969bdca4a06cd97f1294d765c8eecbe1 and < f8c39983fc9c1a978c82e6f2df7bfba8a8561587
- affected>= 7400b063969bdca4a06cd97f1294d765c8eecbe1 and < c7babe2f28b507e17f28e9f753b7caec72d4857f
- affected>= 7400b063969bdca4a06cd97f1294d765c8eecbe1 and < 1c43f0dd8691ddf8884793b481ddc7511cf593c3
- affected>= 7400b063969bdca4a06cd97f1294d765c8eecbe1 and < fa4f1f52528c73989d820f32bfca06bec5afeece
- affected>= 7400b063969bdca4a06cd97f1294d765c8eecbe1 and < 3d53f9aafd469ae1ea27051e00f5b96ca1b55d52
- affected>= 7400b063969bdca4a06cd97f1294d765c8eecbe1 and < 07de44424bb7f17ef9357e8535df96d9e97c40cb
- affected>= 7400b063969bdca4a06cd97f1294d765c8eecbe1 and < 0abbc43f71d99baadeeba6fa3fe1c80b676f57ed
- affected>= 7400b063969bdca4a06cd97f1294d765c8eecbe1 and < d3c0037ffe1273fa1961e779ff6906234d6cf53c
- affected5.7
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.