Not yet scoredPublished Dec 8, 2025

CVE-2023-53839dccp: fix data-race around dp->dccps_mss_cache

Updated under an hour ago (Oct 27, 2026, 8:30 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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.

CVSS: Not yet scored
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Deferred
Record last updated: May 11, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 7c657876b63cb1d8a2ec06f8fc6c37bb8412e66c before 162fa1e3cfb62aa780d7c40c8cccb6c2f8bef7c1; 7c657876b63cb1d8a2ec06f8fc6c37bb8412e66c builds before 2bdc7f272b3a110a4e1fdee6c47c8d20f9b20817; from 7c657876b63cb1d8a2ec06f8fc6c37bb8412e66c before 67eebc7a9217f999b779d46fba5312a716f0dc1d; 7c657876b63cb1d8a2ec06f8fc6c37bb8412e66c builds before 6d701c95ee6463abcbb6da543060d6e444554135; from 7c657876b63cb1d8a2ec06f8fc6c37bb8412e66c before f239c9e1d98b313435481b4926e8bdd06197e4d8; from 7c657876b63cb1d8a2ec06f8fc6c37bb8412e66c before a6ddc1c774874dc704f96a99d015dc759627bba7; from 7c657876b63cb1d8a2ec06f8fc6c37bb8412e66c before d1f38d313bdfc52fb2f662e66d0c60dd1cfe2384; from 7c657876b63cb1d8a2ec06f8fc6c37bb8412e66c before a47e598fbd8617967e49d85c49c22f9fc642704c	CNA record

References

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/f239c9e1d98b313435481b4926e8bdd06197e4d8
https://git.kernel.org/stable/c/a6ddc1c774874dc704f96a99d015dc759627bba7
https://git.kernel.org/stable/c/d1f38d313bdfc52fb2f662e66d0c60dd1cfe2384
https://git.kernel.org/stable/c/a47e598fbd8617967e49d85c49c22f9fc642704c

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.