#VU115985 NULL pointer dereference in Linux kernel - CVE-2025-39857
Published: September 22, 2025
Vulnerability identifier: #VU115985
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-39857
CWE-ID: CWE-476
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 perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the smc_ib_is_sg_need_sync() function in net/smc/smc_ib.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's repository.
External links
- https://git.kernel.org/stable/c/0cdf1fd8fc59d44a48c694324611136910301ef9
- https://git.kernel.org/stable/c/34f17cbe027050b8d5316ea1b6f9bd7c378e92de
- https://git.kernel.org/stable/c/ba1e9421cf1a8369d25c3832439702a015d6b5f9
- https://git.kernel.org/stable/c/eb929910bd4b4165920fa06a87b22cc6cae92e0e
- https://git.kernel.org/stable/c/f18d9b3abf9c6587372cc702f963a7592277ed56