CVE-2025-37924

Advisory lineage Upstream: 0 Downstream: 30
Modified
Published: 20 May 2025, 15:21
Last modified:11 May 2026, 21:17

Vulnerability Summary

Overall Risk (default)
high
70/100
CVSS Score
9.8 CRITICAL
v3.1 (cve.org)
EPSS Score
9.8% LOW
10% probability +9.76%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

20 May 2025, 15:21
Published
Vulnerability first disclosed
11 May 2026, 21:17
Last Modified
Vulnerability information updated

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in kerberos authentication Setting sess->user = NULL was introduced to fix the dangling pointer created by ksmbd_free_user. However, it is possible another thread could be operating on the session and make use of sess->user after it has been passed to ksmbd_free_user but before sess->user is set to NULL.

CVSS Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • v3.1•CRITICAL•Score: 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 9.80%• Percentile: 95%

Techniques & Countermeasures

  • CWE-416•Use After Free

    The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Affected Systems

  • debian•debian_linux

    11.0

  • linux•linux

    ≥ 0626e6641f6b467447c81dd7678a69c66f7746cf, < e34a33d5d7e87399af0a138bb32f6a3e95dd83d2 | ≥ 0626e6641f6b467447c81dd7678a69c66f7746cf, < b447463562238428503cfba1c913261047772f90 | ≥ 0626e6641f6b467447c81dd7678a69c66f7746cf, < e18c616718018dfc440e4a2d2b94e28fe91b1861 | ≥ 0626e6641f6b467447c81dd7678a69c66f7746cf, < 28c756738af44a404a91b77830d017bb0c525890 | ≥ 0626e6641f6b467447c81dd7678a69c66f7746cf, < e86e9134e1d1c90a960dd57f59ce574d27b9a124 | 5.15

  • linux•linux kernel

    ≥ 5.15, < 6.1.138 | ≥ 6.2, < 6.6.90 | ≥ 6.7, < 6.12.28 | ≥ 6.13, < 6.14.6 | 6.15:rc1 | 6.15:rc2 | 6.15:rc3 | 6.15:rc4

References (6)