UnratedFix available
dccp: fix data-race around dp->dccps_mss_cache
Type: advisorySources: OSV
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.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 4.14.323, 4.19.292, 5.10.191, 5.15.127, 5.4.254, 6.1.46, 6.4.11
- CVEs
- CVE-2023-53839
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 23:41 UTC · Revision 1
Source evidence
dccp: fix data-race around dp->dccps_mss_cache
core-osv · Original sourcePublished 9 Dec 2025, 01:29 UTC
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.
osv:CVE-2023-53839
Kernel
Fixed versions: 4.14.323, 4.19.292, 5.4.254, 5.10.191, 5.15.127, 6.1.46, 6.4.11
Complete source record
{
"id": "6f62108029d2b1f05fa21f61906bd3d91b685884e46e298451c8a99ec8a02af3",
"url": "https://osv.dev/vulnerability/CVE-2023-53839",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "dccp: fix data-race around dp->dccps_mss_cache",
"summary": "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.",
"evidence": "osv:CVE-2023-53839",
"products": [
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"severity": "unknown",
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"package": {
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"database_specific": {
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],
"modified": "2026-10-28T02:30:32.227386490Z",
"provider": "osv",
"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/a47e598fbd8617967e49d85c49c22f9fc642704c",
"https://git.kernel.org/stable/c/a6ddc1c774874dc704f96a99d015dc759627bba7",
"https://git.kernel.org/stable/c/d1f38d313bdfc52fb2f662e66d0c60dd1cfe2384",
"https://git.kernel.org/stable/c/f239c9e1d98b313435481b4926e8bdd06197e4d8",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53839.json",
"https://nvd.nist.gov/vuln/detail/CVE-2023-53839",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
],
"provider_metadata": {
"cna_assigner": "Linux",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53839.json"
}
},
"related_cves": [
{
"value": "CVE-2023-53839",
"evidence": "/id"
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],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 499276,
"published_at": "2025-12-09T01:29:55.54+00:00"
}