CVE-2023-53839: linux

CVSS: UnknownDeferred
AliasesUBUNTU-CVE-2023-53839DEBIAN-CVE-2023-53839
Published 09-12-2025Last modified 11-05-2026
Open JSON

Vulnerability summary

CVE-2023-53839 is a vulnerability in linux with no CVSS score yet. EPSS estimates a 0.26% chance of exploitation in the next 30 days, higher than 16.4% of scored vulnerabilities.

Overall risk
0/100
0100
Minimal · default modelHow is this calculated?
CVSS score
Not scored
010
No CVSS score recorded
EPSS score
0.26%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 8 · Related 8
SUSE-SU-2026:0278-1SUSE-SU-2026:0281-1SUSE-SU-2026:0293-1SUSE-SU-2026:0315-1SUSE-SU-2026:20477-1SUSE-SU-2026:20498-1

Timeline

  1. 09-12-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

Risk metrics not yet published.

EPSS trend

Probability

0.26%

Chance of exploitation in the next 30 days

Percentile

16%

Versus all other CVEs

30-day change

0.00 pp

From 0.26% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.26%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu124 products
  • linuxAll versions (No fix recorded) | < 5.4.0-169.187 | < 5.15.0-91.101
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.4.0-1116.126 | < 5.15.0-1051.56
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian1 product
  • linux< 6.1.52-1 | < 6.4.11-1
Linux1 product
  • linux≥ 7c657876b63cb1d8a2ec06f8fc6c37bb8412e66c, < 162fa1e3cfb62aa780d7c40c8cccb6c2f8bef7c1 | ≥ 7c657876b63cb1d8a2ec06f8fc6c37bb8412e66c, < 2bdc7f272b3a110a4e1fdee6c47c8d20f9b20817 | ≥ 7c657876b63cb1d8a2ec06f8fc6c37bb8412e66c, < 67eebc7a9217f999b779d46fba5312a716f0dc1d | ≥ 7c657876b63cb1d8a2ec06f8fc6c37bb8412e66c, < 6d701c95ee6463abcbb6da543060d6e444554135 | ≥ 7c657876b63cb1d8a2ec06f8fc6c37bb8412e66c, < f239c9e1d98b313435481b4926e8bdd06197e4d8 | ≥ 7c657876b63cb1d8a2ec06f8fc6c37bb8412e66c, < a6ddc1c774874dc704f96a99d015dc759627bba7 | ≥ 7c657876b63cb1d8a2ec06f8fc6c37bb8412e66c, < d1f38d313bdfc52fb2f662e66d0c60dd1cfe2384 | ≥ 7c657876b63cb1d8a2ec06f8fc6c37bb8412e66c, < a47e598fbd8617967e49d85c49c22f9fc642704c | 2.6.14

3 vendors · 126 products

References

12 links
Show all 12 references