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Vulnerability details: VCID-5cag-9f3c-tbcw
Vulnerability ID VCID-5cag-9f3c-tbcw
Aliases CVE-2025-21967
Summary kernel: ksmbd: fix use-after-free in ksmbd_free_work_struct
Status Published
Exploitability 0.5
Weighted Severity 7.0
Risk 3.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-416 Use After Free
System Score Found at
cvssv3 7.8 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-21967.json
epss 0.00049 https://api.first.org/data/v1/epss?cve=CVE-2025-21967
epss 0.00049 https://api.first.org/data/v1/epss?cve=CVE-2025-21967
epss 0.00049 https://api.first.org/data/v1/epss?cve=CVE-2025-21967
cvssv3.1 5.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1 7.8 https://git.kernel.org/stable/c/62746ae3f5414244a96293e3b017be637b641280
ssvc Track https://git.kernel.org/stable/c/62746ae3f5414244a96293e3b017be637b641280
cvssv3.1 7.8 https://git.kernel.org/stable/c/bb39ed47065455604729404729d9116868638d31
ssvc Track https://git.kernel.org/stable/c/bb39ed47065455604729404729d9116868638d31
cvssv3.1 7.8 https://git.kernel.org/stable/c/eb51f6f59d19b92f6fe84d3873f958495ab32f0a
ssvc Track https://git.kernel.org/stable/c/eb51f6f59d19b92f6fe84d3873f958495ab32f0a
cvssv3.1 7.8 https://git.kernel.org/stable/c/fb776765bfc21d5e4ed03bb3d4406c2b86ff1ac3
ssvc Track https://git.kernel.org/stable/c/fb776765bfc21d5e4ed03bb3d4406c2b86ff1ac3
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-21967.json
https://api.first.org/data/v1/epss?cve=CVE-2025-21967
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
2356646 https://bugzilla.redhat.com/show_bug.cgi?id=2356646
62746ae3f5414244a96293e3b017be637b641280 https://git.kernel.org/stable/c/62746ae3f5414244a96293e3b017be637b641280
bb39ed47065455604729404729d9116868638d31 https://git.kernel.org/stable/c/bb39ed47065455604729404729d9116868638d31
eb51f6f59d19b92f6fe84d3873f958495ab32f0a https://git.kernel.org/stable/c/eb51f6f59d19b92f6fe84d3873f958495ab32f0a
fb776765bfc21d5e4ed03bb3d4406c2b86ff1ac3 https://git.kernel.org/stable/c/fb776765bfc21d5e4ed03bb3d4406c2b86ff1ac3
USN-7605-1 https://usn.ubuntu.com/7605-1/
USN-7605-2 https://usn.ubuntu.com/7605-2/
USN-7606-1 https://usn.ubuntu.com/7606-1/
USN-7628-1 https://usn.ubuntu.com/7628-1/
USN-7764-1 https://usn.ubuntu.com/7764-1/
USN-7764-2 https://usn.ubuntu.com/7764-2/
USN-7765-1 https://usn.ubuntu.com/7765-1/
USN-7766-1 https://usn.ubuntu.com/7766-1/
USN-7767-1 https://usn.ubuntu.com/7767-1/
USN-7767-2 https://usn.ubuntu.com/7767-2/
USN-7779-1 https://usn.ubuntu.com/7779-1/
USN-7790-1 https://usn.ubuntu.com/7790-1/
USN-7800-1 https://usn.ubuntu.com/7800-1/
USN-7801-1 https://usn.ubuntu.com/7801-1/
USN-7801-2 https://usn.ubuntu.com/7801-2/
USN-7801-3 https://usn.ubuntu.com/7801-3/
USN-7802-1 https://usn.ubuntu.com/7802-1/
USN-7809-1 https://usn.ubuntu.com/7809-1/
No exploits are available.
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-21967.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

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none

required

unchanged

changed

high

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Vector: CVSS:3.1/AV:L/AC:L/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

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none

required

unchanged

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Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Found at https://git.kernel.org/stable/c/62746ae3f5414244a96293e3b017be637b641280
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: SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2025-04-16T13:14:51Z/ Found at https://git.kernel.org/stable/c/62746ae3f5414244a96293e3b017be637b641280
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Found at https://git.kernel.org/stable/c/bb39ed47065455604729404729d9116868638d31
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: SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2025-04-16T13:14:51Z/ Found at https://git.kernel.org/stable/c/bb39ed47065455604729404729d9116868638d31
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Found at https://git.kernel.org/stable/c/eb51f6f59d19b92f6fe84d3873f958495ab32f0a
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: SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2025-04-16T13:14:51Z/ Found at https://git.kernel.org/stable/c/eb51f6f59d19b92f6fe84d3873f958495ab32f0a
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Found at https://git.kernel.org/stable/c/fb776765bfc21d5e4ed03bb3d4406c2b86ff1ac3
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: SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2025-04-16T13:14:51Z/ Found at https://git.kernel.org/stable/c/fb776765bfc21d5e4ed03bb3d4406c2b86ff1ac3
Exploit Prediction Scoring System (EPSS)
Percentile 0.15803
EPSS Score 0.00049
Published At June 5, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-04T16:47:05.173243+00:00 RedHat Importer Import https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-21967.json 38.6.0