CVE-2022-29581 (GCVE-0-2022-29581)

Vulnerability from cvelistv5 – Published: 2022-05-17 16:50 – Updated: 2025-04-21 13:53
VLAI
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)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-911 - Improper Update of Reference Count
Assigner
References
Impacted products
Vendor Product Version
Linux Kernel Affected: unspecified , < 5.18 (custom)
Affected: 4.14 , < unspecified (custom)
Create a notification for this product.
Credits
syzbot <syzkaller@googlegroups.com>
Show details on NVD website
To clipboard 

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      "sourceIdentifier": "cve-coordination@google.com",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"cve-coordination@google.com\", \"type\": \"Secondary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-911\"}]}, {\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"NVD-CWE-Other\"}]}]"
    },
    "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": "2026-06-06T05:44:04Z",
      "cve": "CVE-2022-29581",
      "id": "CVE-2022-29581",
      "initial_release_date": "2023-02-15T03:26:10Z",
      "product_status:known_affected": "231",
      "product_status:known_not_affected": "113",
      "product_status:recommended": "1543",
      "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": "43"
    }
  }
}



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Tags
Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.