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Vulnerability details: VCID-4rbc-1z1g-3fe2
Vulnerability ID VCID-4rbc-1z1g-3fe2
Aliases CVE-2025-37856
Summary kernel: btrfs: harden block_group::bg_list against list_del() races
Status Published
Exploitability 0.5
Weighted Severity 5.0
Risk 2.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-911 Improper Update of Reference Count
System Score Found at
cvssv3 5.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-37856.json
epss 0.00052 https://api.first.org/data/v1/epss?cve=CVE-2025-37856
epss 0.00052 https://api.first.org/data/v1/epss?cve=CVE-2025-37856
epss 0.00052 https://api.first.org/data/v1/epss?cve=CVE-2025-37856
cvssv3.1 4.7 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-37856.json
https://api.first.org/data/v1/epss?cve=CVE-2025-37856
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
2365242 https://bugzilla.redhat.com/show_bug.cgi?id=2365242
USN-7594-1 https://usn.ubuntu.com/7594-1/
USN-7594-2 https://usn.ubuntu.com/7594-2/
USN-7594-3 https://usn.ubuntu.com/7594-3/
USN-8028-1 https://usn.ubuntu.com/8028-1/
USN-8028-2 https://usn.ubuntu.com/8028-2/
USN-8028-3 https://usn.ubuntu.com/8028-3/
USN-8028-4 https://usn.ubuntu.com/8028-4/
USN-8028-5 https://usn.ubuntu.com/8028-5/
USN-8028-6 https://usn.ubuntu.com/8028-6/
USN-8028-7 https://usn.ubuntu.com/8028-7/
USN-8028-8 https://usn.ubuntu.com/8028-8/
USN-8031-1 https://usn.ubuntu.com/8031-1/
USN-8031-2 https://usn.ubuntu.com/8031-2/
USN-8031-3 https://usn.ubuntu.com/8031-3/
USN-8052-1 https://usn.ubuntu.com/8052-1/
USN-8052-2 https://usn.ubuntu.com/8052-2/
USN-8074-1 https://usn.ubuntu.com/8074-1/
USN-8074-2 https://usn.ubuntu.com/8074-2/
USN-8126-1 https://usn.ubuntu.com/8126-1/
No exploits are available.
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-37856.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:H/PR:L/UI:N/S:U/C:N/I:N/A:H 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
Exploit Prediction Scoring System (EPSS)
Percentile 0.16648
EPSS Score 0.00052
Published At June 5, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-04T16:44:47.781408+00:00 RedHat Importer Import https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-37856.json 38.6.0