igc: remove napi_synchronize() in igc_down()
Summary
| CVE | CVE-2026-80715 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-08-28 08:16:57 UTC |
| Updated | 2026-08-28 08:16:57 UTC |
| Description | 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. |
Risk And Classification
EPSS: 0.001610000 probability, percentile 0.055360000 (date 2026-08-30)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected fc9df2a0b520d7d439ecf464794d53e91be74b93 ad6e0df267dc96edb7de1fa0a2fb2a70645bff86 git | Not specified |
| CNA | Linux | Linux | affected fc9df2a0b520d7d439ecf464794d53e91be74b93 605585a8d89aaeb0122e9016fdaa92376897a705 git | Not specified |
| CNA | Linux | Linux | affected fc9df2a0b520d7d439ecf464794d53e91be74b93 a0f16c337691813f8d8f014c01fff5a368e08898 git | Not specified |
| CNA | Linux | Linux | affected fc9df2a0b520d7d439ecf464794d53e91be74b93 f929a6fe5b7ae1e72d2c6d18cd69ab90dcf689d2 git | Not specified |
| CNA | Linux | Linux | affected fc9df2a0b520d7d439ecf464794d53e91be74b93 3b5aee6fcbf6b58112d40d19c8d31fa3f78ee668 git | Not specified |
| CNA | Linux | Linux | affected fc9df2a0b520d7d439ecf464794d53e91be74b93 9a2b637aef4e515c2179774888441d00e8a5ae95 git | Not specified |
| CNA | Linux | Linux | affected fc9df2a0b520d7d439ecf464794d53e91be74b93 5ffab5b9589c50e4cfc0cf36ffd76c89422d4019 git | Not specified |
| CNA | Linux | Linux | affected 5.14 | Not specified |
| CNA | Linux | Linux | unaffected 5.14 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.217 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.184 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.153 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.105 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.44 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.1.8 7.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.2 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/605585a8d89aaeb0122e9016fdaa92376897a705 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/5ffab5b9589c50e4cfc0cf36ffd76c89422d4019 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/ad6e0df267dc96edb7de1fa0a2fb2a70645bff86 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/f929a6fe5b7ae1e72d2c6d18cd69ab90dcf689d2 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/9a2b637aef4e515c2179774888441d00e8a5ae95 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/a0f16c337691813f8d8f014c01fff5a368e08898 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/3b5aee6fcbf6b58112d40d19c8d31fa3f78ee668 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.