---
cve: "CVE-2026-80715"
severity: "LOW"
cvss: 3.1
epss: "2.6%"
vendor: "Linux"
kev: false
exploited: false
published: "2026-08-28 08:16:57"
tags: [cve, security, low]
source: tsecurity.de CVE-Dossier
exported: "2026-09-02T21:11:42+02:00"
---

# CVE-2026-80715

> 3.1 LOW

## Beschreibung

In 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.

## Patch verfügbar (OSV)

- Kernel ≥ 5.15.217
- Kernel ≥ 6.1.184
- Kernel ≥ 6.6.153
- Kernel ≥ 6.12.105
- Kernel ≥ 6.18.44
- Kernel ≥ 7.1.8

## Referenzen

- <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>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-80715) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_