CVE-2023-53839
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.
Affected versions
Linux kernel versions
2.6.14
and later are affected. Fixed in
4.14.323,
4.19.292,
5.4.254,
5.10.191,
5.15.127,
6.1.46,
6.4.11,
6.5
and their respective stable series.
References
The following references provide additional information about CVE-2023-53839 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
-
PatchKernel patch commithttps://git.kernel.org/stable/c/162fa1e3cfb62aa780d7c40c8cccb6c2f8bef7c1
-
PatchKernel patch commithttps://git.kernel.org/stable/c/2bdc7f272b3a110a4e1fdee6c47c8d20f9b20817
-
PatchKernel patch commithttps://git.kernel.org/stable/c/67eebc7a9217f999b779d46fba5312a716f0dc1d
Frequently asked questions
-
What is CVE-2023-53839?
CVE-2023-53839 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 2.6.14 onward and has been patched in 4.14.323, 4.19.292, 5.4.254 and others. CVE-2023-53839 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
-
Is there a patch available for CVE-2023-53839?
Yes — CVE-2023-53839 has been patched. Fixed versions include 4.14.323, 4.19.292, 5.4.254 and others. If you are running Linux kernel 2.6.14 or later up to the fix versions, apply the relevant patch for your kernel branch.
-
Is CVE-2023-53839 actively exploited?
No — CVE-2023-53839 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.