CVE-2019-15221: canonical ubuntu_linux NULL Pointer Dereference
Vulnerability summary
CVE-2019-15221 is a medium (CVSS 4.9) NULL Pointer Dereference vulnerability in canonical ubuntu_linux. EPSS estimates a 0.71% chance of exploitation in the next 30 days, higher than 53.6% of scored vulnerabilities. 1 public exploit is recorded.
Not severe (CVSS 4.6, physical access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 24 · Related 18Timeline
- 19-08-2019PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
An issue was discovered in the Linux kernel before 5.1.17. There is a NULL pointer dereference caused by a malicious USB device in the sound/usb/line6/pcm.c driver.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated4.6MediumCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated4.6MediumCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.71%
Chance of exploitation in the next 30 days
Percentile
54%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.71% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
1 foundExploit Reference (syzkaller.appspot.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Known conditions: physical access, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu26 products
- linuxAll versions (No fix recorded) | < 4.4.0-174.204 | < 4.15.0-60.67
- linux-aws< 4.4.0-1062.66 | < 4.4.0-1102.113 | < 4.15.0-1047.49
- linux-aws-fips< 4.15.0-2018.18 | All versions (No fix recorded)
- linux-aws-hwe< 4.15.0-1047.49~16.04.1
- linux-azure< 4.15.0-1059.64~14.04.1 | < 4.15.0-1056.61 | < 5.0.0-1022.23~18.04.1
Netapp5 products
Debian2 products
- linux< 5.2.6-1
- debian_linuxEOL8.0
Canonical1 product
- ubuntu_linuxEOL14.04 | 16.04 | 18.04 | 19.04
Linux1 product
- linux_kernel< 5.1.17
Opensuse1 product
- leapEOL15.0 | 15.1
6 vendors · 36 products
References
23 links- syzkaller.appspot.com/bug?id=240f09164db2c3d3af33a117c713dc7650dc29d6X Refsource MISCExploitThird Party AdvisoryREPORT
lists.debian.org/debian-lts-announce/2019/09/msg00014.htmlMailing ListX Refsource MLISTThird Party Advisory- lists.debian.org/debian-lts-announce/2019/09/msg00015.htmlMailing ListX Refsource MLISTThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2019-09/msg00064.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
Show all 23 references
- lists.opensuse.org/opensuse-security-announce/2019-09/msg00066.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- lists.debian.org/debian-lts-announce/2019/09/msg00025.htmlMailing ListX Refsource MLISTThird Party Advisory