Description
In the Linux kernel, the following vulnerability has been resolved:
dccp: fix data-race around dp->dccps_mss_cache
dccp_sendmsg() reads dp->dccps_mss_cache before locking the socket. Same thing in do_dccp_getsockopt().
Add READ_ONCE()/WRITE_ONCE() annotations, and change dccp_sendmsg() to check again dccps_mss_cache after socket is locked.
Metrics
No CVSS score has been published yet.
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 7c657876b63cb1d8a2ec06f8fc6c37bb8412e66c, < 162fa1e3cfb62aa780d7c40c8cccb6c2f8bef7c1; >= 7c657876b63cb1d8a2ec06f8fc6c37bb8412e66c, < 2bdc7f272b3a110a4e1fdee6c47c8d20f9b20817; >= 7c657876b63cb1d8a2ec06f8fc6c37bb8412e66c, < 67eebc7a9217f999b779d46fba5312a716f0dc1d; >= 7c657876b63cb1d8a2ec06f8fc6c37bb8412e66c, < 6d701c95ee6463abcbb6da543060d6e444554135; >= 7c657876b63cb1d8a2ec06f8fc6c37bb8412e66c, < f239c9e1d98b313435481b4926e8bdd06197e4d8; >= 7c657876b63cb1d8a2ec06f8fc6c37bb8412e66c, < a6ddc1c774874dc704f96a99d015dc759627bba7; >= 7c657876b63cb1d8a2ec06f8fc6c37bb8412e66c, < d1f38d313bdfc52fb2f662e66d0c60dd1cfe2384; >= 7c657876b63cb1d8a2ec06f8fc6c37bb8412e66c, < a47e598fbd8617967e49d85c49c22f9fc642704c |
| Linux | Linux | 2.6.14 |
References
- https://git.kernel.org/stable/c/162fa1e3cfb62aa780d7c40c8cccb6c2f8bef7c1
- https://git.kernel.org/stable/c/2bdc7f272b3a110a4e1fdee6c47c8d20f9b20817
- https://git.kernel.org/stable/c/67eebc7a9217f999b779d46fba5312a716f0dc1d
- https://git.kernel.org/stable/c/6d701c95ee6463abcbb6da543060d6e444554135
- https://git.kernel.org/stable/c/a47e598fbd8617967e49d85c49c22f9fc642704c
- https://git.kernel.org/stable/c/a6ddc1c774874dc704f96a99d015dc759627bba7
- https://git.kernel.org/stable/c/d1f38d313bdfc52fb2f662e66d0c60dd1cfe2384
- https://git.kernel.org/stable/c/f239c9e1d98b313435481b4926e8bdd06197e4d8
Timeline
- Published
- Dec 9, 2025
- Last modified
- Jun 17, 2026
- NVD status
- Deferred