CVE-2019-9213 (GCVE-0-2019-9213)

Vulnerability from cvelistv5 – Published: 2019-03-05 22:00 – Updated: 2024-08-04 21:38
VLAI
Summary
In the Linux kernel before 4.20.14, expand_downwards in mm/mmap.c lacks a check for the mmap minimum address, which makes it easier for attackers to exploit kernel NULL pointer dereferences on non-SMAP platforms. This is related to a capability check for the wrong task.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
  • n/a
Assigner
mitre CNA under the mitre root
CNA scorecard E 28/100 over 2286 records in the last 180 days details
References
URL Tags
https://www.exploit-db.com/exploits/46502/ exploitx_refsource_EXPLOIT-DB
http://git.kernel.org/cgit/linux/kernel/git/torva… x_refsource_MISC
https://cdn.kernel.org/pub/linux/kernel/v4.x/Chan… x_refsource_MISC
https://cdn.kernel.org/pub/linux/kernel/v4.x/Chan… x_refsource_MISC
https://cdn.kernel.org/pub/linux/kernel/v4.x/Chan… x_refsource_MISC
https://github.com/torvalds/linux/commit/0a1d5299… x_refsource_MISC
http://www.securityfocus.com/bid/107296 vdb-entryx_refsource_BID
https://bugs.chromium.org/p/project-zero/issues/d… x_refsource_MISC
https://cdn.kernel.org/pub/linux/kernel/v4.x/Chan… x_refsource_MISC
https://lists.debian.org/debian-lts-announce/2019… mailing-listx_refsource_MLIST
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
https://lists.debian.org/debian-lts-announce/2019… mailing-listx_refsource_MLIST
https://usn.ubuntu.com/3932-1/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/3932-2/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/3930-1/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/3931-1/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/3933-2/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/3931-2/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/3930-2/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/3933-1/ vendor-advisoryx_refsource_UBUNTU
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
https://access.redhat.com/errata/RHSA-2019:0831 vendor-advisoryx_refsource_REDHAT
https://lists.debian.org/debian-lts-announce/2019… mailing-listx_refsource_MLIST
https://access.redhat.com/errata/RHSA-2019:1479 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:1480 vendor-advisoryx_refsource_REDHAT
http://packetstormsecurity.com/files/156053/Relia… x_refsource_MISC
Date Public
2019-03-05 00:00
Show details on NVD website
To clipboard 

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      "cve": "CVE-2019-9213",
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      "initial_release_date": "2019-02-27T00:00:00+00:00",
      "product_status:fixed": "180",
      "product_status:known_not_affected": "44",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: lack of check for mmap minimum address in expand_downwards in mm/mmap.c leads to NULL pointer dereferences exploit on non-SMAP platforms",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2019/cve-2019-9213.json",
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      "cve": "CVE-2019-9213",
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      "initial_release_date": "2023-02-15T04:14:48Z",
      "product_status:known_affected": "199",
      "product_status:known_not_affected": "163",
      "product_status:recommended": "875",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2019-9213",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2023/cve-2019-9213.json",
      "version": "24"
    }
  }
}



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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.
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Vulnerability timeline

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JSON
How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

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