#VU109507 Use-after-free in Linux kernel - CVE-2025-37924
Published: May 21, 2025 / Updated: May 21, 2025
Vulnerability identifier: #VU109507
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-37924
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the krb5_authenticate() function in fs/smb/server/smb2pdu.c, within the ksmbd_krb5_authenticate() function in fs/smb/server/auth.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
External links
- https://git.kernel.org/stable/c/28c756738af44a404a91b77830d017bb0c525890
- https://git.kernel.org/stable/c/b447463562238428503cfba1c913261047772f90
- https://git.kernel.org/stable/c/e18c616718018dfc440e4a2d2b94e28fe91b1861
- https://git.kernel.org/stable/c/e34a33d5d7e87399af0a138bb32f6a3e95dd83d2
- https://git.kernel.org/stable/c/e86e9134e1d1c90a960dd57f59ce574d27b9a124
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.138
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.28
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.14.6
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.90