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.
References (4)
Core 4
Core References
Release Notes, Vendor Advisory x_refsource_misc
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3
Patch, Tool Signature x_refsource_misc
https://github.com/torvalds/linux/commit/a21b7f0cff1906a93a0130b74713b15a0b36481d
Third Party Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20191205-0001/
Third Party Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/4258-1/
Scores
CVSS v3
7.5
EPSS
0.0127
EPSS Percentile
79.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-401
Status
published
Products (2)
canonical/ubuntu_linux
18.04
linux/linux_kernel
4.18 - 4.19.89
Published
Nov 18, 2019
Tracked Since
Feb 18, 2026