CVE-2023-53839
dccp: fix data-race around dp->dccps_mss_cache
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Dec 9, 2025 |
| Last Updated | May 11, 2026 |
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Affected 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
git.kernel.org: https://git.kernel.org/stable/c/162fa1e3cfb62aa780d7c40c8cccb6c2f8bef7c1 git.kernel.org: https://git.kernel.org/stable/c/2bdc7f272b3a110a4e1fdee6c47c8d20f9b20817 git.kernel.org: https://git.kernel.org/stable/c/67eebc7a9217f999b779d46fba5312a716f0dc1d git.kernel.org: https://git.kernel.org/stable/c/6d701c95ee6463abcbb6da543060d6e444554135 git.kernel.org: https://git.kernel.org/stable/c/f239c9e1d98b313435481b4926e8bdd06197e4d8 git.kernel.org: https://git.kernel.org/stable/c/a6ddc1c774874dc704f96a99d015dc759627bba7 git.kernel.org: https://git.kernel.org/stable/c/d1f38d313bdfc52fb2f662e66d0c60dd1cfe2384 git.kernel.org: https://git.kernel.org/stable/c/a47e598fbd8617967e49d85c49c22f9fc642704c