Input validation error in lvm2 - CVE-2020-8991
Published: February 14, 2020 / Updated: August 8, 2020
Vulnerability identifier: #VU34823
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2020-8991
CWE-ID: CWE-20
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: libffi
Affected software:
lvm2
lvm2
Detailed vulnerability description
The vulnerability allows a local privileged user to perform service disruption.
** DISPUTED ** vg_lookup in daemons/lvmetad/lvmetad-core.c in LVM2 2.02 mismanages memory, leading to an lvmetad memory leak, as demonstrated by running pvs. NOTE: RedHat disputes CVE-2020-8991 as not being a vulnerability since there’s no apparent route to either privilege escalation or to denial of service through the bug.
How to mitigate CVE-2020-8991
Install update from vendor's website.