7.5

CVE-2024-53122: mptcp: cope racing subflow creation in mptcp_rcv_space_adjust

Modified
AliasesRHSA-2025:0049RHSA-2025:0050RHSA-2025:0051
Published 02-12-2024Last modified 15-10-2026

Vulnerability summary

CVE-2024-53122 is a high (CVSS 7.5) vulnerability in linux. EPSS estimates a 0.53% chance of exploitation in the next 30 days, higher than 44.7% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 7.5 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 1% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.53%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 42 · Related 34
DLA-4008-1MGASA-2024-0392MGASA-2024-0393RHSA-2025:0057RHSA-2025:0059RHSA-2025:0062

Timeline

  1. 02-12-2024
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: mptcp: cope racing subflow creation in mptcp_rcv_space_adjust Additional active subflows - i.e. created by the in kernel path manager - are included into the subflow list before starting the 3whs. A racing recvmsg() spooling data received on an already established subflow would unconditionally call tcp_cleanup_rbuf() on all the current subflows, potentially hitting a divide by zero error on the newly created ones. Explicitly check that the subflow is in a suitable state before invoking tcp_cleanup_rbuf().

CVSS metrics

6 scores · 5 sources · 2 versions

EPSS trend

Probability

0.53%

Chance of exploitation in the next 30 days

Percentile

45%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.53% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu122 products
  • linux< 5.15.0-135.146 | < 6.8.0-58.60
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.15.0-1080.87 | < 6.8.0-1027.29
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Redhat75 products
  • bpftool< 0:4.18.0-372.134.1.el8_6 | < 0:5.14.0-70.122.1.el9_0 | < 0:4.18.0-305.148.1.el8_4
  • bpftool-debuginfo< 0:4.18.0-372.134.1.el8_6 | < 0:5.14.0-70.122.1.el9_0 | < 0:4.18.0-305.148.1.el8_4
  • kernel< 0:4.18.0-372.134.1.el8_6 | < 0:5.14.0-70.122.1.el9_0 | < 0:4.18.0-305.148.1.el8_4
  • kernel-abi-stablelists< 0:4.18.0-372.134.1.el8_6 | < 0:5.14.0-70.122.1.el9_0 | < 0:4.18.0-305.148.1.el8_4
  • kernel-core< 0:4.18.0-372.134.1.el8_6 | < 0:5.14.0-70.122.1.el9_0 | < 0:4.18.0-305.148.1.el8_4
Linux2 products
  • linux≥ c76c6956566f974bac2470bd72fc22fb923e04a1, < 0a9a182ea5c7bb0374e527130fd85024ace7279b | ≥ c76c6956566f974bac2470bd72fc22fb923e04a1, < 24995851d58c4a205ad0ffa7b2f21e479a9c8527 | ≥ c76c6956566f974bac2470bd72fc22fb923e04a1, < ff825ab2f455299c0c7287550915a8878e2a66e0 | ≥ c76c6956566f974bac2470bd72fc22fb923e04a1, < aad6412c63baa39dd813e81f16a14d976b3de2e8 | ≥ c76c6956566f974bac2470bd72fc22fb923e04a1, < ce7356ae35943cc6494cc692e62d51a734062b7d | 5.10
  • linux_kernel≥ 5.10, < 6.1.119 | ≥ 6.2, < 6.6.63 | ≥ 6.7, < 6.11.10 | 6.12:rc1 | 6.12:rc2 | 6.12:rc3 | 6.12:rc4 | 6.12:rc5 | 6.12:rc6 | 6.12:rc7
Debian1 product
  • linux< 6.1.119-1 | < 6.11.10-1

4 vendors · 200 products · Showing 200 of 242

References

64 links
Show all 64 references