cve/2024/CVE-2024-42235.md

### [CVE-2024-42235](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-42235)
![](https://img.shields.io/static/v1?label=Product&message=Linux&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=6326c26c1514%3C%20794fa52b9463%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### Description

In the Linux kernel, the following vulnerability has been resolved:s390/mm: Add NULL pointer check to crst_table_free() base_crst_free()crst_table_free() used to work with NULL pointers before the conversionto ptdescs.  Since crst_table_free() can be called with a NULL pointer(error handling in crst_table_upgrade() add an explicit check.Also add the same check to base_crst_free() for consistency reasons.In real life this should not happen, since order two GFP_KERNELallocations will not fail, unless FAIL_PAGE_ALLOC is enabled and used.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/fkie-cad/nvd-json-data-feeds