SB2019123006 - Input validation error in Linux kernel
Published: December 30, 2019 Updated: August 8, 2020
Security Bulletin ID
SB2019123006
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Input validation error (CVE-ID: CVE-2019-20095)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local authenticated user to perform a denial of service (DoS) attack.
mwifiex_tm_cmd in drivers/net/wireless/marvell/mwifiex/cfg80211.c in the Linux kernel before 5.1.6 has some error-handling cases that did not free allocated hostcmd memory, aka CID-003b686ace82. This will cause a memory leak and denial of service.
Remediation
Install update from vendor's website.
References
- http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.1.6
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=003b686ace820ce2d635a83f10f2d7f9c147dabc
- https://security.netapp.com/advisory/ntap-20200204-0002/