cve/2024/CVE-2024-26686.md

### [CVE-2024-26686](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-26686)
![](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:fs/proc: do_task_stat: use sig->stats_lock to gather the threads/children statslock_task_sighand() can trigger a hard lockup.  If NR_CPUS threads calldo_task_stat() at the same time and the process has NR_THREADS, it willspin with irqs disabled O(NR_CPUS * NR_THREADS) time.Change do_task_stat() to use sig->stats_lock to gather the statisticsoutside of ->siglock protected section, in the likely case this code willrun lockless.

### POC

#### Reference
No PoCs from references.

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