CVE-2025-21937: Bluetooth: Add check for mgmt_alloc_skb() in mgmt_remote_name()
First published: Tue Apr 01 2025(Updated: )
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: Add check for mgmt_alloc_skb() in mgmt_remote_name() Add check for the return value of mgmt_alloc_skb() in mgmt_remote_name() to prevent null pointer dereference.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | ||
| Linux Kernel | >=5.17.2<6.1.131 | |
| Linux Kernel | >=6.2<6.6.83 | |
| Linux Kernel | >=6.7<6.12.19 | |
| Linux Kernel | >=6.13<6.13.7 | |
| Linux Kernel | =6.14-rc1 | |
| Linux Kernel | =6.14-rc2 | |
| Linux Kernel | =6.14-rc3 | |
| Linux Kernel | =6.14-rc4 | |
| Linux Kernel | =6.14-rc5 |
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Reference Links
- https://git.kernel.org/stable/c/37785a01040cb5d11ed0ddbcbf78491fcd073161
- https://git.kernel.org/stable/c/c5845c73cbacf5704169283ef29ca02031a36564
- https://git.kernel.org/stable/c/88310caff68ae69d0574859f7926a59c1da2d60b
- https://git.kernel.org/stable/c/69fb168b88e4d62cb31cdd725b67ccc5216cfcaf
- https://git.kernel.org/stable/c/f2176a07e7b19f73e05c805cf3d130a2999154cb
Frequently Asked Questions
What is the severity of CVE-2025-21937?
The severity of CVE-2025-21937 is classified as high due to the risk of a null pointer dereference affecting Bluetooth functionality.
How do I fix CVE-2025-21937?
To fix CVE-2025-21937, update to the latest version of the Linux kernel that includes the patch addressing this vulnerability.
What are the potential impacts of CVE-2025-21937?
Potential impacts of CVE-2025-21937 include system crashes and denial of service due to null pointer dereference in Bluetooth services.
Which versions of the Linux kernel are affected by CVE-2025-21937?
CVE-2025-21937 affects certain versions of the Linux kernel before the patch was applied, specifically those utilizing Bluetooth management functions.
Is CVE-2025-21937 exploitable remotely?
Yes, CVE-2025-21937 is exploitable remotely, potentially allowing an attacker to trigger a denial of service through Bluetooth connections.
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- version/linux kernel/5.17.2
- version/linux kernel/6.2
- version/linux kernel/6.7
- version/linux kernel/6.13
- version/linux kernel/6.14-rc1
- version/linux kernel/6.14-rc2
- version/linux kernel/6.14-rc3
- version/linux kernel/6.14-rc4
- version/linux kernel/6.14-rc5