CVE-2021-47538 (GCVE-0-2021-47538)
Vulnerability from cvelistv5 – Published: 2024-05-24 15:09 – Updated: 2026-05-23 15:20
VLAI
EPSS
VEX
Title
rxrpc: Fix rxrpc_local leak in rxrpc_lookup_peer()
Summary
In the Linux kernel, the following vulnerability has been resolved:
rxrpc: Fix rxrpc_local leak in rxrpc_lookup_peer()
Need to call rxrpc_put_local() for peer candidate before kfree() as it
holds a ref to rxrpc_local.
[DH: v2: Changed to abstract the peer freeing code out into a function]
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-05-24 19:15 UTC
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
e8e51ce79c157188e209e5ea0afaf6b42dd76104 , < 913c24af2d13a3fd304462916ee98e298d56bdce
(git)
Affected: 9ebeddef58c41bd700419cdcece24cf64ce32276 , < 3e70e3a72d80b16094faccbe438cd53761c3503a (git) Affected: 9ebeddef58c41bd700419cdcece24cf64ce32276 , < 60f0b9c42cb80833a03ca57c1c8b078d716e71d1 (git) Affected: 9ebeddef58c41bd700419cdcece24cf64ce32276 , < 9469273e616ca8f1b6e3773c5019f21b4c8d828c (git) Affected: 9ebeddef58c41bd700419cdcece24cf64ce32276 , < beacff50edbd6c9659a6f15fc7f6126909fade29 (git) Affected: 9b7fc03b4cdbfb668b6891967105258691c6d3b5 (git) Affected: 4.19.82 , < 4.19.220 (semver) Affected: 5.3.9 , < 5.4 (semver) |
guessed | |
| Linux | Linux |
Affected:
5.4
Unaffected: 0 , < 5.4 (semver) Unaffected: 4.19.220 , ≤ 4.19.* (semver) Unaffected: 5.4.164 , ≤ 5.4.* (semver) Unaffected: 5.10.84 , ≤ 5.10.* (semver) Unaffected: 5.15.7 , ≤ 5.15.* (semver) Unaffected: 5.16 , ≤ * (original_commit_for_fix) |
guessed |
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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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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