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
02 Description
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
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 5.66% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 92.7% of scored records. A rank, not a probability.
- NVD base score
- 5.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Important. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2019-03-05 22:00Z7 YR AGO
- Last updated
- 2024-08-04 21:38Z2 YR AGO
- Reserved
- 2019-02-27
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-476NULL Pointer DereferenceBase
- Data version
- 5.1
- Document digest
- d54935fef5cbbc4bd04759d8717801681afadcd729b464f79f8961ba750251da
05 Affected products
06 References
- www.exploit-db.com46502https://www.exploit-db.com/exploits/46502/
- git.kernel.orghttp://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0a1d52994d440e21def1c2174932410b4f2a98a1
- cdn.kernel.orghttps://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.162
- cdn.kernel.orghttps://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.27
- cdn.kernel.orghttps://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.105
- github.comhttps://github.com/torvalds/linux/commit/0a1d52994d440e21def1c2174932410b4f2a98a1
- www.securityfocus.com107296http://www.securityfocus.com/bid/107296
- bugs.chromium.orghttps://bugs.chromium.org/p/project-zero/issues/detail?id=1792
- cdn.kernel.orghttps://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.20.14
- lists.debian.org[debian-lts-announce] 20190327 [SECURITY] [DLA 1731-1] linux security updatehttps://lists.debian.org/debian-lts-announce/2019/03/msg00034.html
- lists.opensuse.orgopenSUSE-SU-2019:1085http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00045.html
- lists.debian.org[debian-lts-announce] 20190401 [SECURITY] [DLA 1731-2] linux regression updatehttps://lists.debian.org/debian-lts-announce/2019/04/msg00004.html
- usn.ubuntu.comUSN-3932-1https://usn.ubuntu.com/3932-1/
- usn.ubuntu.comUSN-3932-2https://usn.ubuntu.com/3932-2/
- usn.ubuntu.comUSN-3930-1https://usn.ubuntu.com/3930-1/
- usn.ubuntu.comUSN-3931-1https://usn.ubuntu.com/3931-1/
- usn.ubuntu.comUSN-3933-2https://usn.ubuntu.com/3933-2/
- usn.ubuntu.comUSN-3931-2https://usn.ubuntu.com/3931-2/
- usn.ubuntu.comUSN-3930-2https://usn.ubuntu.com/3930-2/
- usn.ubuntu.comUSN-3933-1https://usn.ubuntu.com/3933-1/
- lists.opensuse.orgopenSUSE-SU-2019:1193http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00052.html
- access.redhat.comRHSA-2019:0831https://access.redhat.com/errata/RHSA-2019:0831
- lists.debian.org[debian-lts-announce] 20190503 [SECURITY] [DLA 1771-1] linux-4.9 security updatehttps://lists.debian.org/debian-lts-announce/2019/05/msg00002.html
- access.redhat.comRHSA-2019:1479https://access.redhat.com/errata/RHSA-2019:1479
- access.redhat.comRHSA-2019:1480https://access.redhat.com/errata/RHSA-2019:1480
- packetstormsecurity.comhttp://packetstormsecurity.com/files/156053/Reliable-Datagram-Sockets-RDS-rds_atomic_free_op-Privilege-Escalation.html
07 Fixed in
Debian 12
- linux Fixed in 4.19.28-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- linux Fixed in 4.19.28-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- linux Fixed in 4.19.28-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 14.04 LTS
- linux Fixed in 3.13.0-168.218
- linux-aws Fixed in 4.4.0-1040.43
- linux-azure Fixed in 4.15.0-1041.45~14.04.1
- linux-lts-xenial Fixed in 4.4.0-144.170~14.04.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- linux Fixed in 4.4.0-145.171
- linux-aws Fixed in 4.4.0-1079.89
- linux-aws-hwe Fixed in 4.15.0-1035.37~16.04.1
- linux-azure Fixed in 4.15.0-1041.45
- linux-gcp Fixed in 4.15.0-1029.31~16.04.1
- linux-hwe Fixed in 4.15.0-47.50~16.04.1
- linux-kvm Fixed in 4.4.0-1043.49
- linux-oracle Fixed in 4.15.0-1010.12~16.04.1
- linux-raspi2 Fixed in 4.4.0-1106.114
- linux-snapdragon Fixed in 4.4.0-1110.115
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- linux Fixed in 4.15.0-47.50
- linux-aws Fixed in 4.15.0-1035.37
- linux-azure Fixed in 4.18.0-1014.14~18.04.1
- linux-gcp Fixed in 4.15.0-1029.31
- linux-gcp-edge Fixed in 4.18.0-1008.9~18.04.1
- linux-hwe Fixed in 4.18.0-17.18~18.04.1
- linux-kvm Fixed in 4.15.0-1031.31
- linux-oem Fixed in 4.15.0-1035.40
- linux-oracle Fixed in 4.15.0-1010.12
- linux-raspi2 Fixed in 4.15.0-1033.35
- linux-snapdragon Fixed in 4.15.0-1053.57
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- linux-azure-fde No fix yet
- linux-gke No fix yet
- linux-raspi2 No fix yet
- linux-riscv No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 22.04 LTS
- linux-intel-iot-realtime No fix yet
- linux-realtime No fix yet
- linux-riscv No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 24.04 LTS
- linux-raspi-realtime No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro FIPS-updates 16.04 LTS
- linux-fips Fixed in 4.4.0-1008.10Available with Ubuntu Pro: https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.