#VU116532 NULL pointer dereference in Linux kernel - CVE-2023-53603
Published: October 5, 2025 / Updated: October 27, 2025
Vulnerability identifier: #VU116532
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-2023-53603
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 qla24xx_issue_sa_replace_iocb() function in drivers/scsi/qla2xxx/qla_edif.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/4406fe8a96a946c7ea5724ee59625755a1d9c59d
- https://git.kernel.org/stable/c/477bc74ad1add644b606bff6ba1284943c42818a
- https://git.kernel.org/stable/c/6b504d06976fe4a61cc05dedc68b84fadb397f77
- https://git.kernel.org/stable/c/7bbeff613ec0560fb2f6f8b405288f3f043adf64
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.4.5