NULL pointer dereference in Linux kernel - CVE-2026-45857
Published: May 28, 2026
Vulnerability identifier: #VU132637
CSH Severity: Low
CVSS v4.0: 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-2026-45857
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a null pointer dereference in the csiostor driver error exit path when handling a NULL rn value. A local user can trigger the vulnerable error path to cause a denial of service.
How to mitigate CVE-2026-45857
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/16ccbfddcb32365138c806cf572e69b42a193c5c
- https://git.kernel.org/stable/c/1982257570b84dc33753d536dd969fd357a014e9
- https://git.kernel.org/stable/c/25ab5e97d3c5f3ed594b4a65d1cc99dc24756681
- https://git.kernel.org/stable/c/25d623f0d77c11a256a54e860d00c239aa9a2583
- https://git.kernel.org/stable/c/3bbbab7b6949c76df64210348adbefedaabbf549
- https://git.kernel.org/stable/c/44ef9f81392de885883f73b9f5c43936a82ae9d7
- https://git.kernel.org/stable/c/526ea3c0ccd495b0079db3e28fdddd51c1bf01f7
- https://git.kernel.org/stable/c/6037124dbf675fbd0a6248aaf04cf07387b8c323