PT-2025-18459 · Linux+5 · Linux Kernel+5

Published

2025-04-07

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Updated

2026-04-20

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CVE-2025-37778

CVSS v3.1

7.8

High

VectorAV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)
Description A dangling pointer issue in the krb authenticate function has been identified. The krb authenticate function frees sess->user but does not set the pointer to NULL. It then calls ksmbd krb5 authenticate to reinitialize sess->user, but this function may return without doing so. As a result, smb2 sess setup, which calls krb authenticate, may access freed memory when it later uses sess->user.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

BDU:2025-06312
CVE-2025-37778
DLA-4193-1
ECHO-BD8E-28CD-D182
USN-7594-1
USN-7594-2
USN-7594-3
USN-8028-1
USN-8028-2
USN-8028-3
USN-8028-4
USN-8028-5
USN-8028-6
USN-8028-7
USN-8028-8
USN-8031-1
USN-8031-2
USN-8031-3
USN-8052-1
USN-8052-2
USN-8074-1
USN-8074-2
USN-8126-1

Affected Products

Astra Linux
Debian
Linuxmint
Linux Kernel
Red Os
Ubuntu