CVE-2019-19039 (GCVE-0-2019-19039)

Vulnerability from cvelistv5 – Published: 2019-11-21 01:40 – Updated: 2024-08-05 02:09 Disputed
VLAI
Summary
__btrfs_free_extent in fs/btrfs/extent-tree.c in the Linux kernel through 5.3.12 calls btrfs_print_leaf in a certain ENOENT case, which allows local users to obtain potentially sensitive information about register values via the dmesg program. NOTE: The BTRFS development team disputes this issues as not being a vulnerability because “1) The kernel provide facilities to restrict access to dmesg - dmesg_restrict=1 sysctl option. So it's really up to the system administrator to judge whether dmesg access shall be disallowed or not. 2) WARN/WARN_ON are widely used macros in the linux kernel. If this CVE is considered valid this would mean there are literally thousands CVE lurking in the kernel - something which clearly is not the case.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CWE
  • n/a
Assigner
References
URL Tags
https://github.com/bobfuzzer/CVE/tree/master/CVE-… x_refsource_MISC
https://usn.ubuntu.com/4414-1/ vendor-advisoryx_refsource_UBUNTU
https://lists.debian.org/debian-lts-announce/2020… mailing-listx_refsource_MLIST
Show details on NVD website
To clipboard 

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    "redhat_vex": {
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      "current_release_date": "2026-06-28T07:27:26+00:00",
      "cve": "CVE-2019-19039",
      "id": "CVE-2019-19039",
      "initial_release_date": "2019-11-20T00:00:00+00:00",
      "product_status:known_affected": "89",
      "product_status:known_not_affected": "15",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: information disclosure in __btrfs_free_extent in fs/btrfs/extent-tree.c",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2019/cve-2019-19039.json",
      "version": "3"
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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

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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.