CVE-2024-26993 (GCVE-0-2024-26993)
Vulnerability from cvelistv5 – Published: 2024-05-01 05:28 – Updated: 2026-05-23 15:40
VLAI
EPSS
VEX
Title
fs: sysfs: Fix reference leak in sysfs_break_active_protection()
Summary
In the Linux kernel, the following vulnerability has been resolved:
fs: sysfs: Fix reference leak in sysfs_break_active_protection()
The sysfs_break_active_protection() routine has an obvious reference
leak in its error path. If the call to kernfs_find_and_get() fails then
kn will be NULL, so the companion sysfs_unbreak_active_protection()
routine won't get called (and would only cause an access violation by
trying to dereference kn->parent if it was called). As a result, the
reference to kobj acquired at the start of the function will never be
released.
Fix the leak by adding an explicit kobject_put() call when kn is NULL.
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-05-01 13:37 UTC
Assigner
References
15 references
Impacted products
6 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
2afc9166f79b8f6da5f347f48515215ceee4ae37 , < f28bba37fe244889b81bb5c508d3f6e5c6e342c5
(git)
Affected: 2afc9166f79b8f6da5f347f48515215ceee4ae37 , < 57baab0f376bec8f54b0fe6beb8f77a57c228063 (git) Affected: 2afc9166f79b8f6da5f347f48515215ceee4ae37 , < 84bd4c2ae9c3d0a7d3a5c032ea7efff17af17e17 (git) Affected: 2afc9166f79b8f6da5f347f48515215ceee4ae37 , < 43f00210cb257bcb0387e8caeb4b46375d67f30c (git) Affected: 2afc9166f79b8f6da5f347f48515215ceee4ae37 , < 5d43e072285e81b0b63cee7189b3357c7768a43b (git) Affected: 2afc9166f79b8f6da5f347f48515215ceee4ae37 , < ac107356aabc362aaeb77463e814fc067a5d3957 (git) Affected: 2afc9166f79b8f6da5f347f48515215ceee4ae37 , < a4c99b57d43bab45225ba92d574a8683f9edc8e4 (git) Affected: 2afc9166f79b8f6da5f347f48515215ceee4ae37 , < a90bca2228c0646fc29a72689d308e5fe03e6d78 (git) Affected: e8a37b2fd5b5087bec6cbbf6946ee3caa712953b (git) Affected: a6abc93760dd07fcd29760b70e6e7520f22cb288 (git) Affected: 461a6385e58e8247e6ba2005aa5d1b8d980ee4a2 (git) Affected: 8a5e02a0f46ea33ed19e48e096a8e8d28e73d10a (git) Affected: c984f4d1d40a2f349503b3faf946502ccbf02f9f (git) Affected: 807d1d299a04e9ad9a9dac55419c1137a105254b (git) Affected: 3.16.62 , < 3.17 (semver) Affected: 3.18.121 , < 3.19 (semver) Affected: 4.4.154 , < 4.5 (semver) Affected: 4.9.125 , < 4.10 (semver) Affected: 4.14.68 , < 4.15 (semver) Affected: 4.18.6 , < 4.19 (semver) |
guessed | |
| Linux | Linux |
Affected:
4.19
Unaffected: 0 , < 4.19 (semver) Unaffected: 4.19.313 , ≤ 4.19.* (semver) Unaffected: 5.4.275 , ≤ 5.4.* (semver) Unaffected: 5.10.216 , ≤ 5.10.* (semver) Unaffected: 5.15.157 , ≤ 5.15.* (semver) Unaffected: 6.1.88 , ≤ 6.1.* (semver) Unaffected: 6.6.29 , ≤ 6.6.* (semver) Unaffected: 6.8.8 , ≤ 6.8.* (semver) Unaffected: 6.9 , ≤ * (original_commit_for_fix) |
guessed | |
| Siemens | RUGGEDCOM RST2428P |
Affected:
0 , < V3.1
(custom)
|
guessed | |
| Siemens | SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family |
Unaffected:
0 , < *
(custom)
|
guessed | |
| Siemens | SCALANCE XCM-/XRM-/XCH-/XRH-300 family |
Affected:
0 , < V3.1
(custom)
|
guessed | |
| Siemens | SIMATIC S7-1500 TM MFP - GNU/Linux subsystem |
Affected:
0 , < *
(custom)
|
guessed |
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{
"url": "https://git.kernel.org/stable/c/84bd4c2ae9c3d0a7d3a5c032ea7efff17af17e17"
},
{
"url": "https://git.kernel.org/stable/c/43f00210cb257bcb0387e8caeb4b46375d67f30c"
},
{
"url": "https://git.kernel.org/stable/c/5d43e072285e81b0b63cee7189b3357c7768a43b"
},
{
"url": "https://git.kernel.org/stable/c/ac107356aabc362aaeb77463e814fc067a5d3957"
},
{
"url": "https://git.kernel.org/stable/c/a4c99b57d43bab45225ba92d574a8683f9edc8e4"
},
{
"url": "https://git.kernel.org/stable/c/a90bca2228c0646fc29a72689d308e5fe03e6d78"
}
],
"title": "fs: sysfs: Fix reference leak in sysfs_break_active_protection()",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2024-26993",
"datePublished": "2024-05-01T05:28:02.462Z",
"dateReserved": "2024-02-19T14:20:24.206Z",
"dateUpdated": "2026-05-23T15:40:53.659Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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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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