CVE-2026-80715
N/AIn the Linux kernel, the following vulnerability has been resolved: igc: remove napi_synchronize() in igc_down() When an AF_XDP zero-copy application is killed abruptly, the XSK pool is torn down but NAPI keeps polling. igc_clean_rx_irq_zc() then returns the full budget on every poll, so napi_complete_done() never clears NAPI_STATE_SCHED. igc_down() calls napi_synchronize() before napi_disable(), so it spins forever waiting for that bit and the interface never goes down. Drop the napi_synchronize() and let napi_disable() do the job -- it sets NAPI_STATE_DISABLE, which forces the stuck poll to complete. Reorder it ahead of igc_set_queue_napi() so the NAPI mapping is cleared only after polling has stopped, matching the recent igb fix b1e067240379.
No known exploitation, public exploit, or elevated probability at this time. Track for changes.
Exploitation likelihood
0.2%chance of exploitation in 30 days · 6th percentile
Impact if exploited
—CVSS · not scored
- No impact metrics
Proof of concept & exploit code
- github-search Search GitHub for public PoC repos
Test against your own equipment
curl -s https://vulnpedia.com/cve/CVE-2026-80715/poc.jsonMachine-readable PoC index for this CVE (for automation).Listed for defensive triage, patch verification, and authorized testing on systems you own. Machine-readable: /cve/CVE-2026-80715/poc.json
References
Technical & other
- https://git.kernel.org/stable/c/ad6e0df267dc96edb7de1fa0a2fb2a70645bff86
- https://git.kernel.org/stable/c/605585a8d89aaeb0122e9016fdaa92376897a705
- https://git.kernel.org/stable/c/a0f16c337691813f8d8f014c01fff5a368e08898
- https://git.kernel.org/stable/c/f929a6fe5b7ae1e72d2c6d18cd69ab90dcf689d2
- https://git.kernel.org/stable/c/3b5aee6fcbf6b58112d40d19c8d31fa3f78ee668
- https://git.kernel.org/stable/c/9a2b637aef4e515c2179774888441d00e8a5ae95
- https://git.kernel.org/stable/c/5ffab5b9589c50e4cfc0cf36ffd76c89422d4019