CVE-2019-19965: canonical ubuntu_linux NULL Pointer Dereference
CVSS: 4.7v3.1MediumModified
AliasesUBUNTU-CVE-2019-19965DEBIAN-CVE-2019-19965
Published 25-12-2019Last modified 08-10-2026
Vulnerability summary
CVE-2019-19965 is a medium (CVSS 4.7) NULL Pointer Dereference vulnerability in canonical ubuntu_linux. EPSS estimates a 0.65% chance of exploitation in the next 30 days, higher than 50.3% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
4.7/10
010
Medium · v3.1 (NVD)EPSS score
0.65%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference
Advisory lineage
Upstream 0 · Downstream 22 · Related 20DLA-2068-1DLA-2114-1OPENSUSE-SU-2020:0336-1SUSE-SU-2020:0511-1SUSE-SU-2020:0558-1SUSE-SU-2020:0559-1SUSE-SU-2020:0560-1SUSE-SU-2020:0580-1SUSE-SU-2020:0584-1SUSE-SU-2020:0599-1SUSE-SU-2020:0605-1SUSE-SU-2020:0613-1SUSE-SU-2020:1255-1SUSE-SU-2020:1275-1SUSE-SU-2020:14354-1SUSE-SU-2020:1663-1USN-4284-1USN-4285-1USN-4286-1USN-4286-2USN-4287-1USN-4287-2
Timeline
- 25-12-2019PublishedVulnerability first disclosed.
- 08-10-2026Last modifiedVulnerability information updated.
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 condition, aka CID-f70267f379b5.
CVSS metrics
4 scores · 3 sources · 2 versionsMedium 4.7Preferred score · NVD (NIST)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated4.7MediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated4.7MediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Low 1.9Preferred score · NVD (NIST)
AV:L/AC:M/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
0.65%
Chance of exploitation in the next 30 days
Percentile
50%
Versus all other CVEs
30-day change
0.00 pp
From 0.65% on 18-09-2026
18-09-202618-10-2026
EPSS score0.65%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (git.kernel.org)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Ubuntu34 products
- linuxAll versions (No fix recorded) | < 4.4.0-174.204 | < 4.15.0-88.88
- linux-aws< 4.4.0-1062.66 | < 4.4.0-1102.113 | < 4.15.0-1060.62
- linux-aws-5.0< 5.0.0-1025.28
- linux-aws-fips< 4.15.0-2018.18 | All versions (No fix recorded)
- linux-aws-hwe< 4.15.0-1060.62~16.04.1
Netapp12 products
Debian2 products
- linux< 5.4.13-1
- debian_linuxEOL8.0
Canonical1 product
- ubuntu_linuxEOL14.04 | 16.04 | 18.04 | 19.10
Linux1 product
- linux_kernel≤ 5.4.6
Opensuse1 product
- leapEOL15.1
6 vendors · 51 products
References
21 links
lists.debian.org/debian-lts-announce/2020/01/msg00013.htmlMailing ListX Refsource MLISTThird Party Advisory- lists.debian.org/debian-lts-announce/2020/03/msg00001.htmlMailing ListX Refsource MLISTThird Party Advisory
Show all 21 references
- lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory