CVE-2025-38562

Advisory lineage Upstream: 0 Downstream: 27
Modified
Published: 19 Aug 2025, 17:02
Last modified:11 May 2026, 21:30

Vulnerability Summary

Overall Risk (default)
low
22/100
CVSS Score
5.5 MEDIUM
v3.1 (nvd)
EPSS Score
0.02% LOW
0% probability +0.01%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

19 Aug 2025, 17:02
Published
Vulnerability first disclosed
11 May 2026, 21:30
Last Modified
Vulnerability information updated

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix null pointer dereference error in generate_encryptionkey If client send two session setups with krb5 authenticate to ksmbd, null pointer dereference error in generate_encryptionkey could happen. sess->Preauth_HashValue is set to NULL if session is valid. So this patch skip generate encryption key if session is valid.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.02%• Percentile: 7%

Techniques & Countermeasures

  • CWE-476•NULL Pointer Dereference

    The product dereferences a pointer that it expects to be valid but is NULL.

Affected Systems

  • debian•debian_linux

    11.0

  • linux•linux

    ≥ 0626e6641f6b467447c81dd7678a69c66f7746cf, < 922f85e6e88fdea723a26854c3a6dcb4beb8d0b9 | ≥ 0626e6641f6b467447c81dd7678a69c66f7746cf, < 96a82e19434a2522525baab59c33332658bc7653 | ≥ 0626e6641f6b467447c81dd7678a69c66f7746cf, < d79c8bebaa622ee223128be7c66d8aaeeb634a57 | ≥ 0626e6641f6b467447c81dd7678a69c66f7746cf, < 2a30ed6428ce83afedca1a6c5c5c4247bcf12d0e | ≥ 0626e6641f6b467447c81dd7678a69c66f7746cf, < 015ef163d65496ae3ba6192c96140a22743f0353 | ≥ 0626e6641f6b467447c81dd7678a69c66f7746cf, < 9c2dbbc959e1fcc6f603a1a843e9cf743ba383bb | ≥ 0626e6641f6b467447c81dd7678a69c66f7746cf, < 9b493ab6f35178afd8d619800df9071992f715de | 5.15

  • linux•linux_kernel

    ≥ 5.15, < 6.1.148 | ≥ 6.2, < 6.6.102 | ≥ 6.7, < 6.12.42 | ≥ 6.13, < 6.15.10 | ≥ 6.16, < 6.16.1

References (9)