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 kernel NULL pointer dereferences on non-SMAP platforms. This is related to a capability check for the wrong task.

CVSS v3.1

5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS v2.0

4.9 MEDIUMAV:L/AC:L/Au:N/C:N/I:N/A:C

EPSS

5.67% chance of exploitation in the next 30 days, 92th percentile

Published

2019-03-05

Updated

2024-08-04

Proof-of-concept exploits (3)

• http://packetstormsecurity.com/files/156053/Reliable-Datagram-Sockets-RDS-rds_atomic_free…
• HaleyWei/POC-available2★ · 2020-09-21
• soh0ro0t/HappyHackingOnLinux0★ · 2019-04-01

Metasploit modules (1)

• rapid7/metasploit-framework/blob/master/modules/exploits/linux/local/rds_atomic_free_op_n…

ExploitDB entries (2)

• https://www.exploit-db.com/exploits/47957
• https://www.exploit-db.com/exploits/46502

References

• CVE Record
• NVD entry

Related

• CVE-2018-18955
• CVE-2019-11599
• CVE-2019-13272
• CVE-2019-9211
• CVE-2019-9220
• CVE-2019-9210