CVE-2026-80715 (GCVE-0-2026-80715)
Vulnerability from cvelistv5
Published
2026-08-28 06:53
Modified
2026-08-28 06:53
Severity ?
VLAI Severity ?
EPSS score ?
Summary
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.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: fc9df2a0b520d7d439ecf464794d53e91be74b93 Version: fc9df2a0b520d7d439ecf464794d53e91be74b93 Version: fc9df2a0b520d7d439ecf464794d53e91be74b93 Version: fc9df2a0b520d7d439ecf464794d53e91be74b93 Version: fc9df2a0b520d7d439ecf464794d53e91be74b93 Version: fc9df2a0b520d7d439ecf464794d53e91be74b93 Version: fc9df2a0b520d7d439ecf464794d53e91be74b93 |
||
{
"containers": {
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"programFiles": [
"drivers/net/ethernet/intel/igc/igc_main.c"
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],
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"versions": [
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"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "5.15.217",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.184",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.153",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.105",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.44",
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},
{
"lessThanOrEqual": "7.1.*",
"status": "unaffected",
"version": "7.1.8",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
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"nodes": [
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"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nigc: remove napi_synchronize() in igc_down()\n\nWhen an AF_XDP zero-copy application is killed abruptly, the XSK pool is\ntorn down but NAPI keeps polling. igc_clean_rx_irq_zc() then returns the\nfull budget on every poll, so napi_complete_done() never clears\nNAPI_STATE_SCHED.\n\nigc_down() calls napi_synchronize() before napi_disable(), so it spins\nforever waiting for that bit and the interface never goes down. Drop the\nnapi_synchronize() and let napi_disable() do the job -- it sets\nNAPI_STATE_DISABLE, which forces the stuck poll to complete. Reorder it\nahead of igc_set_queue_napi() so the NAPI mapping is cleared only after\npolling has stopped, matching the recent igb fix b1e067240379."
}
],
"providerMetadata": {
"dateUpdated": "2026-08-28T06:53:13.683Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/ad6e0df267dc96edb7de1fa0a2fb2a70645bff86"
},
{
"url": "https://git.kernel.org/stable/c/605585a8d89aaeb0122e9016fdaa92376897a705"
},
{
"url": "https://git.kernel.org/stable/c/a0f16c337691813f8d8f014c01fff5a368e08898"
},
{
"url": "https://git.kernel.org/stable/c/f929a6fe5b7ae1e72d2c6d18cd69ab90dcf689d2"
},
{
"url": "https://git.kernel.org/stable/c/3b5aee6fcbf6b58112d40d19c8d31fa3f78ee668"
},
{
"url": "https://git.kernel.org/stable/c/9a2b637aef4e515c2179774888441d00e8a5ae95"
},
{
"url": "https://git.kernel.org/stable/c/5ffab5b9589c50e4cfc0cf36ffd76c89422d4019"
}
],
"title": "igc: remove napi_synchronize() in igc_down()",
"x_generator": {
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"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-80715",
"datePublished": "2026-08-28T06:53:13.683Z",
"dateReserved": "2026-08-26T14:34:25.788Z",
"dateUpdated": "2026-08-28T06:53:13.683Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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