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.
Published 2019-03-05 22:29:00
Updated 2022-10-12 15:56:12
Source MITRE
View at NVD,   CVE.org

Threat overview for CVE-2019-9213

Top countries where our scanners detected CVE-2019-9213
Top open port discovered on systems with this issue 53
IPs affected by CVE-2019-9213 131,262
Threat actors abusing to this issue? Yes
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*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2019-9213

Probability of exploitation activity in the next 30 days: 0.08%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 33 % EPSS Score History EPSS FAQ

Metasploit modules for CVE-2019-9213

  • Reliable Datagram Sockets (RDS) rds_atomic_free_op NULL pointer dereference Privilege Escalation
    Disclosure Date: 2018-11-01
    First seen: 2020-04-26
    exploit/linux/local/rds_atomic_free_op_null_pointer_deref_priv_esc
    This module attempts to gain root privileges on Linux systems by abusing a NULL pointer dereference in the `rds_atomic_free_op` function in the Reliable Datagram Sockets (RDS) kernel module (rds.ko). Successful exploitation requires the RDS kernel module to be loade

CVSS scores for CVE-2019-9213

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source
4.9
MEDIUM AV:L/AC:L/Au:N/C:N/I:N/A:C
3.9
6.9
NIST
5.5
MEDIUM CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
1.8
3.6
NIST

CWE ids for CVE-2019-9213

  • A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2019-9213

Products affected by CVE-2019-9213

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