CVE-2026-80564 (GCVE-0-2026-80564)
Vulnerability from cvelistv5 – Published: 2026-08-26 14:37 – Updated: 2026-08-26 14:37
VLAI
EPSS
VEX
Title
gve: fix NULL dereference due to missing ptp adjfine
Summary
In the Linux kernel, the following vulnerability has been resolved:
gve: fix NULL dereference due to missing ptp adjfine
Fix NULL dereference due to missing implementation of adjfine, which can
be triggered from usermode as follows:
sudo ./testptp -d /dev/ptp0 -f 0
[ 551.943697] BUG: kernel NULL pointer dereference, address: 0000000000000000
[...]
[ 552.061946] Call Trace:
[ 552.064487] <TASK>
[ 552.066681] ptp_clock_adjtime+0x1c0/0x2c0
[ 552.070874] ? get_clock_desc+0x6b/0xb0
[ 552.074825] pc_clock_adjtime+0x78/0xc0
[ 552.078755] __do_sys_clock_adjtime+0x85/0x110
[ 552.083293] do_syscall_64+0xea/0x610
Severity
No CVSS data available.
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
acd16380523b400400523fe54c7499320e558e80 , < e9482feeed66d4bc805458631013e9b61b1a9eaf
(git)
Affected: acd16380523b400400523fe54c7499320e558e80 , < fa9b991bf678dd412dc0ed080672d34d7558d7af (git) Affected: acd16380523b400400523fe54c7499320e558e80 , < 3992ced109c70b771efad9e51ae68e5c7a04dea3 (git) |
guessed | |
| Linux | Linux |
Affected:
6.17
Unaffected: 0 , < 6.17 (semver) Unaffected: 6.18.46 , ≤ 6.18.* (semver) Unaffected: 7.1.10 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix) |
guessed |
{
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"product": "Linux",
"programFiles": [
"drivers/net/ethernet/google/gve/gve_ptp.c"
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"versionType": "git"
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},
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"versionType": "git"
}
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"drivers/net/ethernet/google/gve/gve_ptp.c"
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"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.17"
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{
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},
{
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"version": "7.2",
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}
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],
"cpeApplicability": [
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"nodes": [
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{
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"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
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"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngve: fix NULL dereference due to missing ptp adjfine\n\nFix NULL dereference due to missing implementation of adjfine, which can\nbe triggered from usermode as follows:\n\nsudo ./testptp -d /dev/ptp0 -f 0\n[ 551.943697] BUG: kernel NULL pointer dereference, address: 0000000000000000\n[...]\n[ 552.061946] Call Trace:\n[ 552.064487] \u003cTASK\u003e\n[ 552.066681] ptp_clock_adjtime+0x1c0/0x2c0\n[ 552.070874] ? get_clock_desc+0x6b/0xb0\n[ 552.074825] pc_clock_adjtime+0x78/0xc0\n[ 552.078755] __do_sys_clock_adjtime+0x85/0x110\n[ 552.083293] do_syscall_64+0xea/0x610"
}
],
"providerMetadata": {
"dateUpdated": "2026-08-26T14:37:28.351Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
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"references": [
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"url": "https://git.kernel.org/stable/c/e9482feeed66d4bc805458631013e9b61b1a9eaf"
},
{
"url": "https://git.kernel.org/stable/c/fa9b991bf678dd412dc0ed080672d34d7558d7af"
},
{
"url": "https://git.kernel.org/stable/c/3992ced109c70b771efad9e51ae68e5c7a04dea3"
}
],
"title": "gve: fix NULL dereference due to missing ptp adjfine",
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"cveMetadata": {
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"cveId": "CVE-2026-80564",
"datePublished": "2026-08-26T14:37:28.351Z",
"dateReserved": "2026-08-26T14:34:25.767Z",
"dateUpdated": "2026-08-26T14:37:28.351Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2026-80564\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-08-26T15:17:11.433\",\"lastModified\":\"2026-08-26T15:17:11.433\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ngve: fix NULL dereference due to missing ptp adjfine\\n\\nFix NULL dereference due to missing implementation of adjfine, which can\\nbe triggered from usermode as follows:\\n\\nsudo ./testptp -d /dev/ptp0 -f 0\\n[ 551.943697] BUG: kernel NULL pointer dereference, address: 0000000000000000\\n[...]\\n[ 552.061946] Call Trace:\\n[ 552.064487] \u003cTASK\u003e\\n[ 552.066681] ptp_clock_adjtime+0x1c0/0x2c0\\n[ 552.070874] ? get_clock_desc+0x6b/0xb0\\n[ 552.074825] pc_clock_adjtime+0x78/0xc0\\n[ 552.078755] __do_sys_clock_adjtime+0x85/0x110\\n[ 552.083293] do_syscall_64+0xea/0x610\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/net/ethernet/google/gve/gve_ptp.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"acd16380523b400400523fe54c7499320e558e80\",\"lessThan\":\"e9482feeed66d4bc805458631013e9b61b1a9eaf\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"acd16380523b400400523fe54c7499320e558e80\",\"lessThan\":\"fa9b991bf678dd412dc0ed080672d34d7558d7af\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"acd16380523b400400523fe54c7499320e558e80\",\"lessThan\":\"3992ced109c70b771efad9e51ae68e5c7a04dea3\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/net/ethernet/google/gve/gve_ptp.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.17\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.17\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.46\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.10\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/3992ced109c70b771efad9e51ae68e5c7a04dea3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e9482feeed66d4bc805458631013e9b61b1a9eaf\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/fa9b991bf678dd412dc0ed080672d34d7558d7af\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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