5.5

CVE-2025-39692: smb: server: split ksmbd_rdma_stop_listening() out of ksmbd_rdma_destroy()

Modified
AliasesUBUNTU-CVE-2025-39692DEBIAN-CVE-2025-39692
Published 05-09-2025Last modified 12-05-2026

Vulnerability summary

CVE-2025-39692 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in debian debian_linux. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 5.3% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.16%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 21 · Related 16
DLA-4328-1DSA-6008-1DSA-6009-1MGASA-2025-0234MGASA-2025-0235USN-8028-1

Timeline

  1. 05-09-2025
    PublishedVulnerability first disclosed.
  2. 12-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: smb: server: split ksmbd_rdma_stop_listening() out of ksmbd_rdma_destroy() We can't call destroy_workqueue(smb_direct_wq); before stop_sessions()! Otherwise already existing connections try to use smb_direct_wq as a NULL pointer.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.16%

Chance of exploitation in the next 30 days

Percentile

5%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.16% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu137 products
  • linuxAll versions (No fix recorded) | < 6.8.0-100.100
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 6.8.0-1046.49
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian2 products
  • linux< 6.1.153-1 | < 6.12.48-1 | < 6.16.5-1
  • debian_linuxEOL11.0
Linux2 products
  • linux≥ 0626e6641f6b467447c81dd7678a69c66f7746cf, < 524e90e58a267dad11e23351d9e4b1f941490976 | ≥ 0626e6641f6b467447c81dd7678a69c66f7746cf, < 212eb86f75b4d7b82f3d94aed95ba61103bccb93 | ≥ 0626e6641f6b467447c81dd7678a69c66f7746cf, < 003e6a3150299f681f34cb189aa068018cef6a45 | ≥ 0626e6641f6b467447c81dd7678a69c66f7746cf, < e41e33400516702427603f8fbbec43c91ede09c0 | ≥ 0626e6641f6b467447c81dd7678a69c66f7746cf, < bac7b996d42e458a94578f4227795a0d4deef6fa | 5.15
  • linux_kernel≥ 5.15, < 6.1.149 | ≥ 6.2, < 6.6.103 | ≥ 6.7, < 6.12.44 | ≥ 6.13, < 6.16.4 | 6.17:rc1 | 6.17:rc2

3 vendors · 141 products

References

28 links
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