What’s Vulnerable › Vulnerabilities

CVE-2026-45857: scsi: csiostor: Fix dereference of null pointer rn

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-27 · updated 2026-06-25
• Weakness: CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: scsi: csiostor: Fix dereference of null pointer rn The error exit path when rn is NULL ends up deferencing the null pointer rn via the use of the macro CSIO_INC_STATS. Fix this by adding a new error return path label after the use of the macro to avoid the deference.

Affected products

• Linux kernel: from 3.8 before 5.10.252; from 5.11 before 5.15.202; from 5.16 before 6.1.165; from 6.2 before 6.6.128; from 6.7 before 6.12.75; from 6.13 before 6.18.14 — fixed in 5.10.252, 5.15.202, 6.1.165, 6.12.75, 6.18.14, 6.19.4

How to fix

Upgrade to a fixed version: Linux kernel 5.10.252, 5.15.202, 6.1.165, 6.12.75. Check the vendor advisory for mitigations.

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

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