CVE-2021-46991 (GCVE-0-2021-46991)
Vulnerability from cvelistv5 – Published: 2024-02-28 08:13 – Updated: 2026-05-11 13:45
VLAI
EPSS
VEX
Title
i40e: Fix use-after-free in i40e_client_subtask()
Summary
In the Linux kernel, the following vulnerability has been resolved:
i40e: Fix use-after-free in i40e_client_subtask()
Currently the call to i40e_client_del_instance frees the object
pf->cinst, however pf->cinst->lan_info is being accessed after
the free. Fix this by adding the missing return.
Addresses-Coverity: ("Read from pointer after free")
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-02-28 20:37 UTC
Assigner
References
6 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
7b0b1a6d0ac983ce1928432285d0222d4fb7c38b , < c1322eaeb8af0d8985b5cc5fa759140fa0e57b84
(git)
Affected: 7b0b1a6d0ac983ce1928432285d0222d4fb7c38b , < d718c15a2bf9ae082d5ae4d177fb19ef23cb4132 (git) Affected: 7b0b1a6d0ac983ce1928432285d0222d4fb7c38b , < 829a713450b8fb127cbabfc1244c1d8179ec5107 (git) Affected: 7b0b1a6d0ac983ce1928432285d0222d4fb7c38b , < 4ebc10aa7cd17fd9857dedac69600465c9dd16d1 (git) Affected: 7b0b1a6d0ac983ce1928432285d0222d4fb7c38b , < 1fd5d262e7442192ac7611ff1597a36c5b044323 (git) Affected: 7b0b1a6d0ac983ce1928432285d0222d4fb7c38b , < 38318f23a7ef86a8b1862e5e8078c4de121960c3 (git) |
guessed | |
| Linux | Linux |
Affected:
4.16
Unaffected: 0 , < 4.16 (semver) Unaffected: 4.19.191 , ≤ 4.19.* (semver) Unaffected: 5.4.120 , ≤ 5.4.* (semver) Unaffected: 5.10.38 , ≤ 5.10.* (semver) Unaffected: 5.11.22 , ≤ 5.11.* (semver) Unaffected: 5.12.5 , ≤ 5.12.* (semver) Unaffected: 5.13 , ≤ * (original_commit_for_fix) |
guessed |
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"product_status:known_affected": "42",
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"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: i40e: Fix use-after-free in i40e_client_subtask()",
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"status": "interim",
"title": "SUSE CVE CVE-2021-46991",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2021-46991.json",
"version": "54"
},
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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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