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CVE-2026-23021 (GCVE-0-2026-23021)

Vulnerability from cvelistv5 – Published: 2026-01-31 11:39 – Updated: 2026-06-11 18:44
VLAI
Title
net: usb: pegasus: fix memory leak in update_eth_regs_async()
Summary
In the Linux kernel, the following vulnerability has been resolved: net: usb: pegasus: fix memory leak in update_eth_regs_async() When asynchronously writing to the device registers and if usb_submit_urb() fail, the code fail to release allocated to this point resources.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-10 20:41 UTC
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 323b34963d113efb566635f43858f40cce01d5f9 , < 5397ea6d21c35a17707e201a60761bdee00bcc4e (git)
Affected: 323b34963d113efb566635f43858f40cce01d5f9 , < a40af9a2904a1ab8ce61866ebe2a894ef30754ba (git)
Affected: 323b34963d113efb566635f43858f40cce01d5f9 , < ac5d92d2826dec51e5d4c6854865bc5817277452 (git)
Affected: 323b34963d113efb566635f43858f40cce01d5f9 , < 93f18eaa190374e0f2d253e3b1a65cee19a7abe6 (git)
Affected: 323b34963d113efb566635f43858f40cce01d5f9 , < 471dfb97599eec74e0476046b3ef8e7037f27b34 (git)
Affected: 323b34963d113efb566635f43858f40cce01d5f9 , < ce6eef731aba23a988decea1df3b08cf978f7b01 (git)
Affected: 323b34963d113efb566635f43858f40cce01d5f9 , < afa27621a28af317523e0836dad430bec551eb54 (git)
guessed Create a notification for this product.
Linux Linux Affected: 3.10
Unaffected: 0 , < 3.10 (semver)
Unaffected: 5.10.248 , ≤ 5.10.* (semver)
Unaffected: 5.15.198 , ≤ 5.15.* (semver)
Unaffected: 6.1.161 , ≤ 6.1.* (semver)
Unaffected: 6.6.121 , ≤ 6.6.* (semver)
Unaffected: 6.12.66 , ≤ 6.12.* (semver)
Unaffected: 6.18.6 , ≤ 6.18.* (semver)
Unaffected: 6.19 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website

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          },
          {
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            "tags": [
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            ],
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          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
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            ],
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          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
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            ],
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                "value": "CWE-401"
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            "type": "Primary"
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      "current_release_date": "2026-06-28T07:18:09+00:00",
      "cve": "CVE-2026-23021",
      "id": "CVE-2026-23021",
      "initial_release_date": "2026-01-31T00:00:00+00:00",
      "product_status:known_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Linux kernel (net: usb: pegasus): Denial of Service due to memory leak",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23021.json",
      "version": "3"
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      "current_release_date": "2026-07-24T02:40:57Z",
      "cve": "CVE-2026-23021",
      "id": "CVE-2026-23021",
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      "product_status:first_fixed": "2",
      "product_status:known_affected": "558",
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      "product_status:recommended": "295",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-23021",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-23021.json",
      "version": "25"
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                      },
                      {
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                      },
                      {
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                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-06-10T20:41:03.342469Z",
                    "version": "2.0.3"
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            ],
            "providerMetadata": {
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              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
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        ],
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              "versions": [
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                  "lessThanOrEqual": "6.6.*",
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                  "lessThanOrEqual": "6.12.*",
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                  "lessThanOrEqual": "*",
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                  "versionType": "original_commit_for_fix"
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            }
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      },
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    }
  }
}



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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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Detection rules are retrieved from Rulezet.

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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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