- Vulnerability/
- CVE-2024-48876
CVE-2024-48876: stackdepot: fix stack_depot_save_flags() in NMI context
First published: Sat Jan 11 2025(Updated: )
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.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | ||
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.128-1 6.12.20-1 6.12.21-1 |
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Reference Links
- https://git.kernel.org/stable/c/031e04bdc834cda3b054ef6b698503b2b97e8186
- https://git.kernel.org/stable/c/9bfeeeff2c92b9dd261198b601b45bde4c529841
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-48876
- https://nvd.nist.gov/vuln/detail/CVE-2024-48876
- https://launchpad.net/bugs/cve/CVE-2024-48876
- https://security-tracker.debian.org/tracker/CVE-2024-48876
- https://ubuntu.com/security/CVE-2024-48876
- https://git.kernel.org/linus/031e04bdc834cda3b054ef6b698503b2b97e8186
Frequently Asked Questions
What is the severity of CVE-2024-48876?
CVE-2024-48876 is considered a moderate severity vulnerability in the Linux kernel.
What systems are affected by CVE-2024-48876?
CVE-2024-48876 affects the Linux kernel, particularly in cases involving NMI context.
What is the impact of CVE-2024-48876?
The impact of CVE-2024-48876 relates to improper handling of certain flags in NMI context which could affect system stability.
How do I fix CVE-2024-48876?
To fix CVE-2024-48876, update your Linux kernel to the latest version that includes the patch for this vulnerability.
Is there a workaround for CVE-2024-48876?
There are no known workarounds for CVE-2024-48876; updating the kernel is required to mitigate the risk.
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