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Vulnerability details: VCID-deqa-aj1j-aaah
Vulnerability ID VCID-deqa-aj1j-aaah
Aliases CVE-2020-8991
Summary ** 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.
Status Disputed
Exploitability 0.5
Weighted Severity 2.7
Risk 1.4
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-401 Missing Release of Memory after Effective Lifetime
CWE-772 Missing Release of Resource after Effective Lifetime
System Score Found at
generic_textual Low http://people.canonical.com/~ubuntu-security/cve/2020/CVE-2020-8991.html
cvssv3 2.3 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-8991.json
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rhbs low https://bugzilla.redhat.com/show_bug.cgi?id=1805922
generic_textual Low https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8991
cvssv3.1 2.3 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 2.1 https://nvd.nist.gov/vuln/detail/CVE-2020-8991
cvssv3 2.3 https://nvd.nist.gov/vuln/detail/CVE-2020-8991
cvssv3.1 2.3 https://nvd.nist.gov/vuln/detail/CVE-2020-8991
Reference id Reference type URL
http://people.canonical.com/~ubuntu-security/cve/2020/CVE-2020-8991.html
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-8991.json
https://api.first.org/data/v1/epss?cve=CVE-2020-8991
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8991
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://sourceware.org/git/?p=lvm2.git%3Ba=commit%3Bh=bcf9556b8fcd16ad8997f80cc92785f295c66701
https://sourceware.org/git/?p=lvm2.git;a=commit;h=bcf9556b8fcd16ad8997f80cc92785f295c66701
1805922 https://bugzilla.redhat.com/show_bug.cgi?id=1805922
cpe:2.3:a:redhat:lvm2:2.02.00:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:redhat:lvm2:2.02.00:*:*:*:*:*:*:*
CVE-2020-8991 https://nvd.nist.gov/vuln/detail/CVE-2020-8991
No exploits are available.
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-8991.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:L/AC:L/Au:N/C:N/I:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2020-8991
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L Found at https://nvd.nist.gov/vuln/detail/CVE-2020-8991
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L Found at https://nvd.nist.gov/vuln/detail/CVE-2020-8991
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.13628
EPSS Score 0.00044
Published At Nov. 1, 2024, midnight
Date Actor Action Source VulnerableCode Version
2025-04-17T20:40:40.451823+00:00 NVD CVE Status Improver Improve https://cveawg.mitre.org/api/cve/CVE-2020-8991 36.0.0