CVE-2026-80924 (GCVE-0-2026-80924)
Vulnerability from cvelistv5 – Published: 2026-09-09 16:19 – Updated: 2026-09-09 16:19
VLAI
EPSS
VEX
Title
crypto: krb5 - use kfree_sensitive() for derived key buffers
Summary
In the Linux kernel, the following vulnerability has been resolved:
crypto: krb5 - use kfree_sensitive() for derived key buffers
crypto_krb5_prepare_encryption() and crypto_krb5_prepare_checksum()
free the buffer holding the freshly derived keys with plain kfree(),
leaving the key material behind in the freed slab object.
Severity
No CVSS data available.
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
3936f02bf2d3308a7359dd37dd96cd60603d8170 , < 731a5b6fb4c1705f9405d9029dd64ea81e336207
(git)
Affected: 3936f02bf2d3308a7359dd37dd96cd60603d8170 , < 91b96dc9cc250cd16751f53de525cf3442ca0962 (git) Affected: 3936f02bf2d3308a7359dd37dd96cd60603d8170 , < a1bf79365794783b19f5b09e8a23f7ee311e8931 (git) Affected: 3936f02bf2d3308a7359dd37dd96cd60603d8170 , < f7d53dd3f267e46a784f219a75072f2f400d42b9 (git) |
guessed | |
| Linux | Linux |
Affected:
6.15
Unaffected: 0 , < 6.15 (semver) Unaffected: 6.18.49 , ≤ 6.18.* (semver) Unaffected: 7.1.13 , ≤ 7.1.* (semver) Unaffected: 7.2.3 , ≤ 7.2.* (semver) Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix) |
guessed |
{
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"programFiles": [
"crypto/krb5/krb5_api.c"
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"nodes": [
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},
{
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}
],
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}
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}
],
"descriptions": [
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: krb5 - use kfree_sensitive() for derived key buffers\n\ncrypto_krb5_prepare_encryption() and crypto_krb5_prepare_checksum()\nfree the buffer holding the freshly derived keys with plain kfree(),\nleaving the key material behind in the freed slab object."
}
],
"providerMetadata": {
"dateUpdated": "2026-09-09T16:19:44.150Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
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},
{
"url": "https://git.kernel.org/stable/c/91b96dc9cc250cd16751f53de525cf3442ca0962"
},
{
"url": "https://git.kernel.org/stable/c/a1bf79365794783b19f5b09e8a23f7ee311e8931"
},
{
"url": "https://git.kernel.org/stable/c/f7d53dd3f267e46a784f219a75072f2f400d42b9"
}
],
"title": "crypto: krb5 - use kfree_sensitive() for derived key buffers",
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"cveMetadata": {
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"cveId": "CVE-2026-80924",
"datePublished": "2026-09-09T16:19:44.150Z",
"dateReserved": "2026-08-26T14:34:25.802Z",
"dateUpdated": "2026-09-09T16:19:44.150Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
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}
}
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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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