synced 14 MIN AGO
01 Record

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

UnratedPUBLISHEDCNA: mitre
CNA base scoreUnratedNo CNA CVSS vector

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.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
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

VendorProductVersionsPlatforms
canonicalubuntu_linuxNot specified—
debiandebian_linuxNot specified—
linuxlinux_kernelNot specified—
netapp8300Not specified—
netapp8300_firmwareNot specified—
netapp8700Not specified—
netapp8700_firmwareNot specified—
netappa400Not specified—
netappa400_firmwareNot specified—
netappa700sNot specified—
netappa700s_firmwareNot specified—
netappactive_iq_unified_managerNot specified—
netappcloud_backupNot specified—
netappdata_availability_servicesNot specified—
netappe-series_santricity_os_controllerNot specified—
netapph610sNot specified—
netapph610s_firmwareNot specified—
netapphci_management_nodeNot specified—
netappsolidfireNot specified—
opensuseleapNot specified—
redhatenterprise_linuxNot specified—
redhatenterprise_mrgNot specified—

06 References

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 4.4.0-1062.66
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
  • linux-azure
    Fixed in 4.15.0-1071.76~14.04.1
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
  • linux-lts-xenial
    Fixed in 4.4.0-174.204~14.04.1
    Available 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 4.4.0-1029.34
    Available 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 4.15.0-2018.18
    Available with Ubuntu Pro: https://ubuntu.com/pro
  • linux-azure-fips
    Fixed in 4.15.0-2006.7
    Available 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.