CVE-2023-53839

dccp: fix data-race around dp->dccps_mss_cache

published December 9, 2025

CVSS
—
EPSS
0%
Percentile
16.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.00257 · 16.4th percentile
Published
2025-12-09T01:29Z
EPSS history
Timeline
  • 09 DEC 01:29Z
    dccp: fix data-race around dp->dccps_mss_cache
    cvelistv5