CVE-2022-29581 (GCVE-0-2022-29581)
Vulnerability from cvelistv5 – Published: 2022-05-17 16:50 – Updated: 2025-04-21 13:53
VLAI
EPSS
VEX
Summary
Improper Update of Reference Count vulnerability in net/sched of Linux Kernel allows local attacker to cause privilege escalation to root. This issue affects: Linux Kernel versions prior to 5.18; version 4.14 and later versions.
Severity
7.8 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-21 13:39 UTC
CWE
- CWE-911 - Improper Update of Reference Count
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://git.kernel.org/pub/scm/linux/kernel/git/t… | x_refsource_MISC |
| https://kernel.dance/#3db09e762dc79584a69c10d74a6… | x_refsource_MISC |
| http://www.openwall.com/lists/oss-security/2022/05/18/2 | mailing-listx_refsource_MLIST |
| http://packetstormsecurity.com/files/167386/Kerne… | x_refsource_MISC |
| https://security.netapp.com/advisory/ntap-2022062… | x_refsource_CONFIRM |
| https://www.debian.org/security/2022/dsa-5173 | vendor-advisoryx_refsource_DEBIAN |
| http://packetstormsecurity.com/files/168191/Kerne… | x_refsource_MISC |
Impacted products
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"vulnStatus": "Modified",
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},
"microsoft_vex": {
"current_release_date": "2023-01-06T00:00:00.000Z",
"cve": "CVE-2022-29581",
"id": "msrc_CVE-2022-29581",
"initial_release_date": "2022-05-02T00:00:00.000Z",
"product_status:fixed": "2",
"product_status:known_affected": "2",
"source": "Microsoft CSAF VEX",
"status": "final",
"title": "Improper Update of Reference Count vulnerability in net/sched of Linux Kernel allows local attacker to cause privilege escalation to root. This issue affects: Linux Kernel versions prior to 5.18; version 4.14 and later versions.",
"url": "https://msrc.microsoft.com/csaf/vex/2022/msrc_cve-2022-29581.json",
"version": "2"
},
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"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-07-03T02:26:14+00:00",
"cve": "CVE-2022-29581",
"id": "CVE-2022-29581",
"initial_release_date": "2022-04-15T00:00:00+00:00",
"product_status:fixed": "475",
"product_status:known_affected": "42",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: use-after-free due to improper update of reference count in net/sched/cls_u32.c",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-29581.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "important",
"current_release_date": "2026-09-04T00:38:38Z",
"cve": "CVE-2022-29581",
"id": "CVE-2022-29581",
"initial_release_date": "2023-02-15T03:26:10Z",
"product_status:known_affected": "236",
"product_status:known_not_affected": "168",
"product_status:recommended": "1535",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2022-29581",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-29581.json",
"version": "49"
}
}
}
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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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