Improper input validation in Linux kernel - CVE-2019-17075
Published: October 1, 2019 / Updated: October 3, 2023
Vulnerability identifier: #VU94798
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2019-17075
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
An issue was discovered in write_tpt_entry in drivers/infiniband/hw/cxgb4/mem.c in the Linux kernel through 5.3.2. The cxgb4 driver is directly calling dma_map_single (a DMA function) from a stack variable. This could allow an attacker to trigger a Denial of Service, exploitable if this driver is used on an architecture for which this stack/DMA interaction has security relevance.
How to mitigate CVE-2019-17075
Install update from vendor's repository.
Sources
- https://lore.kernel.org/lkml/20191001165611.GA3542072@kroah.com
- https://seclists.org/bugtraq/2019/Nov/11
- http://packetstormsecurity.com/files/155212/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html
- https://usn.ubuntu.com/4208-1/
- https://usn.ubuntu.com/4210-1/
- https://usn.ubuntu.com/4211-2/
- https://usn.ubuntu.com/4211-1/
- https://usn.ubuntu.com/4226-1/
- https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html
- https://www.oracle.com/security-alerts/cpuApr2021.html