CVE-2025-21749: net: rose: lock the socket in rose_bind()
First published: Thu Feb 27 2025(Updated: )
In the Linux kernel, the following vulnerability has been resolved: net: rose: lock the socket in rose_bind() syzbot reported a soft lockup in rose_loopback_timer(), with a repro calling bind() from multiple threads. rose_bind() must lock the socket to avoid this issue.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| >=2.6.12<6.1.129 | ||
| >=6.2<6.6.78 | ||
| >=6.7<6.12.14 | ||
| >=6.13<6.13.3 | ||
| =6.14-rc1 |
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Reference Links
- https://git.kernel.org/stable/c/4c04b0ab3a647e76d0e752b013de8e404abafc63
- https://git.kernel.org/stable/c/667f61b3498df751c8b3f0be1637e7226cbe3ed0
- https://git.kernel.org/stable/c/970cd2ed26cdab2b0f15b6d90d7eaa36538244a5
- https://git.kernel.org/stable/c/a1300691aed9ee852b0a9192e29e2bdc2411a7e6
- https://git.kernel.org/stable/c/e0384efd45f615603e6869205b72040c209e69cc
- https://git.kernel.org/stable/c/b8bf5c3fb778bbb1f3ff7d98ec577c969f687513
- https://git.kernel.org/stable/c/ed00c5f907d08a647b8bf987514ad8c6b17971a7
- https://git.kernel.org/stable/c/d308661a0f4e7c8e86dfc7074a55ee5894c61538
Frequently Asked Questions
What is the severity of CVE-2025-21749?
CVE-2025-21749 has been classified as a medium severity vulnerability due to its potential to cause soft lockups in the Linux kernel.
How do I fix CVE-2025-21749?
To fix CVE-2025-21749, update the Linux kernel to a version that includes the patch for this vulnerability.
What systems are affected by CVE-2025-21749?
CVE-2025-21749 affects multiple versions of the Linux kernel, specifically those versions between 2.6.12 and 6.6.78, as well as 6.12.14 and 6.14-rc1.
What is the nature of the issue in CVE-2025-21749?
CVE-2025-21749 involves a soft lockup due to improper handling of socket locking in the rose_bind() function.
Is there a known exploit for CVE-2025-21749?
As of now, there are no publicly known exploits for CVE-2025-21749, but proper updates are recommended to mitigate risks.
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