CVE-2023-53839
Unknown
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.
SeverityUnknown
CVSS—
Exploit probability—
Product
Linux
PublishedDec 9, 2025
First seenDec 9, 2025
How to fix
Update
- Linux Linux162fa1e3cfb62aa780d7c40c8cccb6c2f8bef7c1, 2bdc7f272b3a110a4e1fdee6c47c8d20f9b20817, 67eebc7a9217f999b779d46fba5312a716f0dc1d, 6d701c95ee6463abcbb6da543060d6e444554135, f239c9e1d98b313435481b4926e8bdd06197e4d8, a6ddc1c774874dc704f96a99d015dc759627bba7, d1f38d313bdfc52fb2f662e66d0c60dd1cfe2384, a47e598fbd8617967e49d85c49c22f9fc642704c or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 7c657876b63cb1d8a2ec06f8fc6c37bb8412e66c ≤ v < 162fa1e3cfb62aa780d7c40c8cccb6c2f8bef7c1, 7c657876b63cb1d8a2ec06f8fc6c37bb8412e66c ≤ v < 2bdc7f272b3a110a4e1fdee6c47c8d20f9b20817, 7c657876b63cb1d8a2ec06f8fc6c37bb8412e66c ≤ v < 67eebc7a9217f999b779d46fba5312a716f0dc1d, 7c657876b63cb1d8a2ec06f8fc6c37bb8412e66c ≤ v < 6d701c95ee6463abcbb6da543060d6e444554135, 7c657876b63cb1d8a2ec06f8fc6c37bb8412e66c ≤ v < f239c9e1d98b313435481b4926e8bdd06197e4d8, 7c657876b63cb1d8a2ec06f8fc6c37bb8412e66c ≤ v < a6ddc1c774874dc704f96a99d015dc759627bba7, 7c657876b63cb1d8a2ec06f8fc6c37bb8412e66c ≤ v < d1f38d313bdfc52fb2f662e66d0c60dd1cfe2384, 7c657876b63cb1d8a2ec06f8fc6c37bb8412e66c ≤ v < a47e598fbd8617967e49d85c49c22f9fc642704c, 2.6.14 | 162fa1e3cfb62aa780d7c40c8cccb6c2f8bef7c1, 2bdc7f272b3a110a4e1fdee6c47c8d20f9b20817, 67eebc7a9217f999b779d46fba5312a716f0dc1d, 6d701c95ee6463abcbb6da543060d6e444554135, f239c9e1d98b313435481b4926e8bdd06197e4d8, a6ddc1c774874dc704f96a99d015dc759627bba7, d1f38d313bdfc52fb2f662e66d0c60dd1cfe2384, a47e598fbd8617967e49d85c49c22f9fc642704c |
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