CVE-2024-48876

stackdepot: fix stack_depot_save_flags() in NMI context

Description

In the Linux kernel, the following vulnerability has been resolved: stackdepot: fix stack_depot_save_flags() in NMI context Per documentation, stack_depot_save_flags() was meant to be usable from NMI context if STACK_DEPOT_FLAG_CAN_ALLOC is unset. However, it still would try to take the pool_lock in an attempt to save a stack trace in the current pool (if space is available). This could result in deadlock if an NMI is handled while pool_lock is already held. To avoid deadlock, only try to take the lock in NMI context and give up if unsuccessful. The documentation is fixed to clearly convey this.

N/A

CVSS

Severity:

EPSS 0.03%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/9bfeeeff2c92b9dd261198b601b45bde4c529841
https://git.kernel.org/stable/c/031e04bdc834cda3b054ef6b698503b2b97e8186

Frequently Asked Questions

What is the severity of CVE-2024-48876?: CVE-2024-48876 has not yet been assigned a CVSS score.
How to fix CVE-2024-48876?: To fix CVE-2024-48876, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-48876 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2024-48876 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-48876?: CVE-2024-48876 affects Linux Linux, Linux Linux.

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