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Fencer Vulns
low 2.3

CVE-2020-8991 json

vg_lookup in daemons/lvmetad/lvmetad-core.c in LVM2 2.02 mismanages memory, leading to an lvmetad memory leak, as demonstrated by running p…

published 2020-02-14 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-29821

cvss
2.3
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 26%
public exploits
0
none known

Summary

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

Patch / fix

  • lvm2 Debian 14, Debian 13, Debian 12 2.03.01-2

debian advisories DEBIAN-CVE-2020-8991

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-8991 updated cvss 2.3

lvm2: memory leak in vg_lookup in daemons/lvmetad/lvmetad-core.c

  • Red Hat Enterprise Linux 5 lvm2 Red Hat Enterprise Linux 6 lvm2, cmirror, lvm2-libs, lvm2-cluster, device-mapper, device-mapper-libs, +2 more
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 7 lvm2, cmirror, lvm2-libs, lvm2-lockd, lvm2-cluster, device-mapper, +6 more
    affected: no fix available “Fix deferred”
  • Red Hat Enterprise Linux 8 lvm2, cmirror, lvm2-libs, lvm2-dbusd, lvm2-lockd, device-mapper, +3 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.33% chance of exploitation in the next 30 days, higher than 26% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 2.3 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L
NVD 2.0 2.1 AV:L/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness
  • CWE-401 Missing Release of Memory after Effective Lifetime

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.