CVE-2019-19965
In the Linux kernel through 5.4.6, there is a NULL pointer dereference in drivers/scsi/libsas/sas_discover.c because of mishandling of port disconnection during discovery, related to a PHY down race
02 Description
In the Linux kernel through 5.4.6, there is a NULL pointer dereference in drivers/scsi/libsas/sas_discover.c because of mishandling of port disconnection during discovery, related to a PHY down race
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 0.65% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 50.7% of scored records. A rank, not a probability.
- NVD base score
- 4.7 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-10-08.
- Red Hat severity
- Low. 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
- 2019-12-25 03:01Z6 YR AGO
- Last updated
- 2026-10-08 21:03Z20 DAYS AGO
- Reserved
- 2019-12-25
- 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
- 5.2
- Document digest
- 1c739b475eefc88127613362bffa6c2c2c5c8903a0bd9c9770395635d9321170
05 Affected products
06 References
- git.kernel.orghttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f70267f379b5e5e11bdc5d72a56bf17e5feed01f
- lists.debian.org[debian-lts-announce] 20200118 [SECURITY] [DLA 2068-1] linux security updatehttps://lists.debian.org/debian-lts-announce/2020/01/msg00013.html
- security.netapp.comhttps://security.netapp.com/advisory/ntap-20200204-0002/
- usn.ubuntu.comUSN-4285-1https://usn.ubuntu.com/4285-1/
- usn.ubuntu.comUSN-4287-1https://usn.ubuntu.com/4287-1/
- usn.ubuntu.comUSN-4286-2https://usn.ubuntu.com/4286-2/
- usn.ubuntu.comUSN-4287-2https://usn.ubuntu.com/4287-2/
- lists.debian.org[debian-lts-announce] 20200302 [SECURITY] [DLA 2114-1] linux-4.9 security updatehttps://lists.debian.org/debian-lts-announce/2020/03/msg00001.html
- usn.ubuntu.comUSN-4284-1https://usn.ubuntu.com/4284-1/
- usn.ubuntu.comUSN-4286-1https://usn.ubuntu.com/4286-1/
- lists.opensuse.orgopenSUSE-SU-2020:0336http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html
07 Fixed in
Debian 12
- linux Fixed in 5.4.13-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- linux Fixed in 5.4.13-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- linux Fixed in 5.4.13-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- linux Fixed in 4.4.0-174.204
- linux-aws Fixed in 4.4.0-1102.113
- linux-aws-hwe Fixed in 4.15.0-1060.62~16.04.1
- linux-azure Fixed in 4.15.0-1071.76
- linux-gcp Fixed in 4.15.0-1055.59
- linux-hwe Fixed in 4.15.0-88.88~16.04.1
- linux-hwe-edge No fix yet
- linux-kvm Fixed in 4.4.0-1066.73
- linux-oracle Fixed in 4.15.0-1033.36~16.04.1
- linux-raspi2 Fixed in 4.4.0-1129.138
- linux-snapdragon Fixed in 4.4.0-1133.141
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 4.15.0-88.88
- linux-aws Fixed in 4.15.0-1060.62
- linux-aws-5.0 Fixed in 5.0.0-1025.28
- linux-azure Fixed in 5.0.0-1032.34
- linux-azure-5.3 Fixed in 5.3.0-1013.14~18.04.1
- linux-azure-edge No fix yet
- linux-gcp Fixed in 5.0.0-1031.32
- linux-gcp-5.3 Fixed in 5.3.0-1012.13~18.04.1
- linux-gcp-edge No fix yet
- linux-gke-4.15 Fixed in 4.15.0-1052.55
- linux-gke-5.0 Fixed in 5.0.0-1030.31
- linux-gke-5.3 Fixed in 5.3.0-1012.13~18.04.1
- linux-hwe Fixed in 5.3.0-40.32~18.04.1
- linux-hwe-edge No fix yet
- linux-kvm Fixed in 4.15.0-1053.53
- linux-oem Fixed in 4.15.0-1073.83
- linux-oem-osp1 Fixed in 5.0.0-1039.44
- linux-oracle Fixed in 4.15.0-1033.36
- linux-oracle-5.0 Fixed in 5.0.0-1011.16
- linux-raspi2 Fixed in 4.15.0-1055.59
- linux-raspi2-5.3 Fixed in 5.3.0-1018.20~18.04.1
- linux-snapdragon Fixed in 4.15.0-1072.79
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
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 14.04 LTS
- linux No fix yet
- linux-aws Fixed in 4.4.0-1062.66Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-azure Fixed in 4.15.0-1071.76~14.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
- linux-lts-xenial Fixed in 4.4.0-174.204~14.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
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 4.4.0-1029.34Available 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.
Ubuntu Pro FIPS-updates 18.04 LTS
- linux-aws-fips Fixed in 4.15.0-2018.18Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-azure-fips Fixed in 4.15.0-2006.7Available 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.
Ubuntu Pro FIPS 16.04 LTS
- linux-fips 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 18.04 LTS
- linux-aws-fips No fix yet
- linux-azure-fips No fix yet
- linux-gcp-fips No fix yet
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.