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CVE-2021-42739 (GCVE-0-2021-42739)

Vulnerability from cvelistv5 – Published: 2021-10-20 00:00 – Updated: 2024-08-04 03:38
VLAI
Summary
The firewire subsystem in the Linux kernel through 5.14.13 has a buffer overflow related to drivers/media/firewire/firedtv-avc.c and drivers/media/firewire/firedtv-ci.c, because avc_ca_pmt mishandles bounds checking.
Severity
6.7 (Medium)
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CWE
  • n/a
Assigner
References
Show details on NVD website
To clipboard 

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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-28T07:49:07+00:00",
      "cve": "CVE-2021-42739",
      "id": "CVE-2021-42739",
      "initial_release_date": "2021-04-20T00:00:00+00:00",
      "product_status:fixed": "335",
      "product_status:known_affected": "122",
      "product_status:known_not_affected": "20",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Heap buffer overflow in firedtv driver",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-42739.json",
      "version": "3"
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    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-09-02T02:22:01Z",
      "cve": "CVE-2021-42739",
      "id": "CVE-2021-42739",
      "initial_release_date": "2023-02-15T03:37:07Z",
      "product_status:known_affected": "323",
      "product_status:known_not_affected": "65",
      "product_status:recommended": "1630",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2021-42739",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2021-42739.json",
      "version": "41"
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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.

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  • 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.


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