### [CVE-2025-38696](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-38696)
![](https://img.shields.io/static/v1?label=Product&message=Linux&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=blue)

### Description

In the Linux kernel, the following vulnerability has been resolved:MIPS: Don't crash in stack_top() for tasks without ABI or vDSONot all tasks have an ABI associated or vDSO mapped,for example kthreads never do.If such a task ever ends up calling stack_top(), it will derefence theNULL ABI pointer and crash.This can for example happen when using kunit:    mips_stack_top+0x28/0xc0    arch_pick_mmap_layout+0x190/0x220    kunit_vm_mmap_init+0xf8/0x138    __kunit_add_resource+0x40/0xa8    kunit_vm_mmap+0x88/0xd8    usercopy_test_init+0xb8/0x240    kunit_try_run_case+0x5c/0x1a8    kunit_generic_run_threadfn_adapter+0x28/0x50    kthread+0x118/0x240    ret_from_kernel_thread+0x14/0x1cOnly dereference the ABI point if it is set.The GIC page is also included as it is specific to the vDSO.Also move the randomization adjustment into the same conditional.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/w4zu/Debian_security