# CVE-2023-32253: Kernel: deadlock in ksmbd_find_crypto_ctx()

Status: published. Published: 2025-08-02. Updated: 2026-11-09.

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.

## Remediation

No remediation reported in collected sources

## Affected products and versions

-  /  (linux): ≥ 0; < 5.15.112 (affected, semvar); ≥ 6.0.0; < 6.0.* (affected, semvar); ≥ 6.1.0; < 6.1.28 (affected, semvar); ≥ 6.2.0; < 6.2.15 (affected, semvar); ≥ 6.3.0; < 6.3.2 (affected, semvar). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 10 (kernel): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 6 (kernel): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 7 (kernel): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 7 (kernel-rt): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8 (kernel): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8 (kernel-rt): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 9 (kernel): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 9 (kernel-rt): Version range not reported. Source: CNA: redhat

## Severity and prioritization

- CVSS 3.1: 5.9 (medium); CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H; source: CNA: redhat

- CISA KEV: No listing in collected sources

- EPSS: 0.33% as of 2026-11-08; percentile 26.98%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-413

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://access.redhat.com/security/cve/CVE-2023-32253 (CNA: redhat; vdb-entry, x_refsource_REDHAT)

- https://bugzilla.redhat.com/show_bug.cgi?id=2385886 (CNA: redhat; issue-tracking, x_refsource_REDHAT)

## Provenance

- CNA: redhat: https://www.cve.org/CVERecord?id=CVE-2023-32253; retrieved 2026-11-09; source updated 2026-11-09

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2023-32253; retrieved 2026-11-09; source updated Not reported

Revision: 361ca3497594581b66d0803c9e6a06ad4d46754b5e0dd6071e040495aae30ad0

Canonical: https://y2.dev/cve/CVE-2023-32253

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