CVE-2023-32253

Kernel: deadlock in ksmbd_find_crypto_ctx()

Published Aug 2, 2025 CVSS 3.1 · 5.9 Medium EPSS < 1% KEV · Not listed

Description

A flaw was found in the Linux kernel's ksmbd component. A deadlock is triggered by sending multiple concurrent session setup requests, possibly leading to a denial of service.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

unaffected

Version	Status	Constraints
`0`	affected	< 5.15.112
`6.0.0`	affected	< 6.0.*
`6.1.0`	affected	< 6.1.28
`6.2.0`	affected	< 6.2.15
`6.3.0`	affected	< 6.3.2

Red Hat Red Hat Enterprise Linux 10 unaffected —

Red Hat Red Hat Enterprise Linux 6 unaffected —

Red Hat Red Hat Enterprise Linux 7 unaffected —

Red Hat Red Hat Enterprise Linux 8 unaffected —

Red Hat Red Hat Enterprise Linux 9 unaffected —

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

Advisories

Source	ID	Title
EUVD	EUVD-2023-36510	A flaw was found in the Linux kernel's ksmbd component. A deadlock is triggered by sending multiple concurrent session setup requests, possibly leading to a denial of service.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.334% probability within 30 days)

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://access.redhat.com/security/cve/CVE-2023-32253
https://bugzilla.redhat.com/show_bug.cgi?id=2385886

History

Nov 9, 2026 3:30 AM First appearance in the feed. Affected versions updated. Affected vendors updated View changes

Type	Values Removed	Values Added
First Time appeared		Redhat rhel Els
CPEs	cpe:/o:redhat:enterprise_linux:10 cpe:/o:redhat:enterprise_linux:6 cpe:/o:redhat:enterprise_linux:7 cpe:/o:redhat:enterprise_linux:8 cpe:/o:redhat:enterprise_linux:9	cpe:/a:redhat:enterprise_linux:10 cpe:/a:redhat:enterprise_linux:8 cpe:/a:redhat:enterprise_linux:9 cpe:/o:redhat:rhel_els:6 cpe:/o:redhat:rhel_els:7
Vendors & Products		Redhat rhel Els

Jun 29, 2026 11:45 PM Affected versions updated. Affected vendors updated View changes

Type	Values Removed	Values Added
CPEs	~~cpe:/o:redhat:rhivos:1~~
Vendors & Products	Redhat rhivos

Jun 25, 2026 5:15 AM First appearance in the feed. Affected versions updated. Affected vendors updated View changes

Type	Values Removed	Values Added
First Time appeared		Redhat rhivos
CPEs		cpe:/o:redhat:rhivos:1
Vendors & Products		Redhat rhivos

Aug 4, 2025 2:15 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Aug 2, 2025 10:30 PM Description updated. Title updated. First appearance in the feed. Weaknesses updated. Affected versions updated. Affected vendors updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description		A flaw was found in the Linux kernel's ksmbd component. A deadlock is triggered by sending multiple concurrent session setup requests, possibly leading to a denial of service.
Title		Kernel: deadlock in ksmbd_find_crypto_ctx()
First Time appeared		Redhat Redhat enterprise Linux
Weaknesses		CWE-413
CPEs		cpe:/o:redhat:enterprise_linux:10 cpe:/o:redhat:enterprise_linux:6 cpe:/o:redhat:enterprise_linux:7 cpe:/o:redhat:enterprise_linux:8 cpe:/o:redhat:enterprise_linux:9
Vendors & Products		Redhat Redhat enterprise Linux
References		https://access.redhat.com/security/cve/CVE-2023-32253 https://bugzilla.redhat.com/show_bug.cgi?id=2385886
Metrics		cvssV3_1 `{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H'}`