CVE-2019-9213
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...
- Published
- Mar 5, 2019
- Updated
- Aug 4, 2024
- Assigning CNA
- mitre
- Evidence observed
- Mar 6, 2019
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HLow · next 30 days
- Percentile
- 92.8%
- Model date
- Oct 13, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
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.
Sources
- Reliable Datagram Sockets (RDS) rds_atomic_free_op NULL pointer dereference Privilege EscalationModule
modules/exploits/linux/local/rds_atomic_free_op_null_pointer_deref_priv_esc.rb
Metasploit Framework modulesDeclared conditions
- platform: Linux($.exploit_linux/local/rds_atomic_free_op_null_pointer_deref_priv_esc.platform)
- verification: check_declared($.exploit_linux/local/rds_atomic_free_op_null_pointer_deref_priv_esc.check)
- kernel-exploit-factoryResearch
Linux kernel CVE exploit analysis report and relative debug environment. You don't need to compile Linux kernel and configure your environment anymore.
Responsible use
Use vulnerability information only on systems you own or are authorized to test. Kitploit links to public research metadata and does not store exploit code or malicious payloads.