SB20260528225 - NULL pointer dereference in Linux kernel scsi csiostor driver
Published: May 28, 2026
Security Bulletin ID
SB20260528225
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2026-45857)
CWE-ID: CWE-476 - NULL Pointer Dereference
CVSSv4: 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
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.
Remediation
Install update from vendor's website.
References
- 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