CVE-2026-45838 (GCVE-0-2026-45838)
Vulnerability from cvelistv5 – Published: 2026-05-27 09:24 – Updated: 2026-06-14 17:46
VLAI
EPSS
VEX
Title
bpf: fix end-of-list detection in cgroup_storage_get_next_key()
Summary
In the Linux kernel, the following vulnerability has been resolved:
bpf: fix end-of-list detection in cgroup_storage_get_next_key()
list_next_entry() never returns NULL -- when the current element is the
last entry it wraps to the list head via container_of(). The subsequent
NULL check is therefore dead code and get_next_key() never returns
-ENOENT for the last element, instead reading storage->key from a bogus
pointer that aliases internal map fields and copying the result to
userspace.
Replace it with list_entry_is_head() so the function correctly returns
-ENOENT when there are no more entries.
Severity
5.5 (Medium)
Assigner
References
8 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
de9cbbaadba5adf88a19e46df61f7054000838f6 , < 0f3d9dd5e1fd52b39e25328307c6a694e994ffe3
(git)
Affected: de9cbbaadba5adf88a19e46df61f7054000838f6 , < 26d3339e465e54107bd85884341d1609c5300d6a (git) Affected: de9cbbaadba5adf88a19e46df61f7054000838f6 , < 2c88b2d96e1d4d0c7c4589a4593d4cdee6d332d6 (git) Affected: de9cbbaadba5adf88a19e46df61f7054000838f6 , < b4b5a20bed82130da2f2818f04d52378952fbd0b (git) Affected: de9cbbaadba5adf88a19e46df61f7054000838f6 , < 85a2f30e40f7468db732f55659bc6318874f49af (git) Affected: de9cbbaadba5adf88a19e46df61f7054000838f6 , < 32ce55d424395904986f5066f8755f6cb9993377 (git) Affected: de9cbbaadba5adf88a19e46df61f7054000838f6 , < fc39753b7f92e09177777e9c648afe5aa3abb81f (git) Affected: de9cbbaadba5adf88a19e46df61f7054000838f6 , < 5828b9e5b272ecff7cf5d345128d3de7324117f7 (git) |
guessed | |
| Linux | Linux |
Affected:
4.19
Unaffected: 0 , < 4.19 (semver) Unaffected: 5.10.258 , ≤ 5.10.* (semver) Unaffected: 5.15.209 , ≤ 5.15.* (semver) Unaffected: 6.1.175 , ≤ 6.1.* (semver) Unaffected: 6.6.141 , ≤ 6.6.* (semver) Unaffected: 6.12.91 , ≤ 6.12.* (semver) Unaffected: 6.18.33 , ≤ 6.18.* (semver) Unaffected: 7.0.10 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (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.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
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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.