CVE-2019-19079: canonical ubuntu_linux
Vulnerability summary
CVE-2019-19079 is a high (CVSS 7.8) vulnerability in canonical ubuntu_linux. EPSS estimates a 3.30% chance of exploitation in the next 30 days, higher than 88.5% of scored vulnerabilities.
Severe, CVSS 7.5 (NVD); no exploitation reported by the 5 checked sources; EPSS 3% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 1 · Related 1Timeline
- 18-11-2019PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
A memory leak in the qrtr_tun_write_iter() function in net/qrtr/tun.c in the Linux kernel before 5.3 allows attackers to cause a denial of service (memory consumption), aka CID-a21b7f0cff19.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
3.30%
Chance of exploitation in the next 30 days
Percentile
89%
Versus all other CVEs
30-day change
No change 0.00 pp
From 3.30% 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
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu13 products
- linuxAll versions (No fix recorded)
- linux-awsAll versions (No fix recorded)
- linux-aws-5.0< 5.0.0-1024.27~18.04.1
- linux-azureAll versions (No fix recorded) | < 5.0.0-1029.31~18.04.1
- linux-azure-edgeAll versions (No fix recorded)
Canonical1 product
- ubuntu_linuxEOL18.04
Debian1 product
- linux< 5.3.7-1
Linux1 product
- linux_kernel≥ 4.18, < 4.19.89 | ≥ 4.20, < 5.3
4 vendors · 16 products
References
8 links- cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3X Refsource MISCREPORTRelease NotesVendor Advisory
- github.com/torvalds/linux/commit/a21b7f0cff1906a93a0130b74713b15a0b36481dX Refsource MISCREPORTPatchTool Signature
