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NVD / CVE Program· CNA Linux

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

Noroxi assessment

Priority: Monitor (action score 22/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.52% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • Fixed version: Linux Linux 0a9a182ea5c7bb0374e527130fd85024ace7279b, 24995851d58c4a205ad0ffa7b2f21e479a9c8527, aad6412c63baa39dd813e81f16a14d976b3de2e8; azl3 kernel 6.6.57.1-7 on Azure Linux 3.0 6.6.64.2-1; azl3 kernel 6.6.64.2-1 on Azure Linux 3.0 6.6.64.2-1.
  • Severity is disputed: the assigning authority (CNA) scores it 7.5, NVD 5.5.

Low priority for now. Upgrade to Linux Linux 0a9a182ea5c7bb0374e527130fd85024ace7279b, 24995851d58c4a205ad0ffa7b2f21e479a9c8527, aad6412c63baa39dd813e81f16a14d976b3de2e8; azl3 kernel 6.6.57.1-7 on Azure Linux 3.0 6.6.64.2-1; azl3 kernel 6.6.64.2-1 on Azure Linux 3.0 6.6.64.2-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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().

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Dec 2, 2024
Updated
Oct 15, 2026
EPSS
0.5% · 44th percentile

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.5%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
5.5
CNA · Linux
7.5
2.0 point gap

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2024-53122

When you'll hear from us

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  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel5.10 and later · before 6.1.119
  • linux linux kernel6.2 and later · before 6.6.63
  • linux linux kernel6.7 and later · before 6.11.10
  • linux linux kernel6.12

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 5.10affected
    • c76c6956566f974bac2470bd72fc22fb923e04a1 and later · before 0a9a182ea5c7bb0374e527130fd85024ace7279baffected · git
    • c76c6956566f974bac2470bd72fc22fb923e04a1 and later · before 24995851d58c4a205ad0ffa7b2f21e479a9c8527affected · git
    • c76c6956566f974bac2470bd72fc22fb923e04a1 and later · before ff825ab2f455299c0c7287550915a8878e2a66e0affected · git
    • c76c6956566f974bac2470bd72fc22fb923e04a1 and later · before aad6412c63baa39dd813e81f16a14d976b3de2e8affected · git
    • c76c6956566f974bac2470bd72fc22fb923e04a1 and later · before ce7356ae35943cc6494cc692e62d51a734062b7daffected · git
    • before 5.10not affected · semver
    • 5.15.174 and later · up to and including 5.15.*not affected · semver
    • 6.1.119 and later · up to and including 6.1.*not affected · semver
    • 6.6.63 and later · up to and including 6.6.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:8bpftoolbefore 4.18.0-553.34.1.el8_104.18.0-553.34.1.el8_10
AlmaLinux:8kernelbefore 4.18.0-553.34.1.el8_104.18.0-553.34.1.el8_10
AlmaLinux:8kernel-abi-stablelistsbefore 4.18.0-553.34.1.el8_104.18.0-553.34.1.el8_10
AlmaLinux:8kernel-corebefore 4.18.0-553.34.1.el8_104.18.0-553.34.1.el8_10
AlmaLinux:8kernel-cross-headersbefore 4.18.0-553.34.1.el8_104.18.0-553.34.1.el8_10
AlmaLinux:8kernel-debugbefore 4.18.0-553.34.1.el8_104.18.0-553.34.1.el8_10
AlmaLinux:8kernel-debug-corebefore 4.18.0-553.34.1.el8_104.18.0-553.34.1.el8_10
AlmaLinux:8kernel-debug-develbefore 4.18.0-553.34.1.el8_104.18.0-553.34.1.el8_10
AlmaLinux:8kernel-debug-modulesbefore 4.18.0-553.34.1.el8_104.18.0-553.34.1.el8_10
AlmaLinux:8kernel-debug-modules-extrabefore 4.18.0-553.34.1.el8_104.18.0-553.34.1.el8_10
AlmaLinux:8kernel-develbefore 4.18.0-553.34.1.el8_104.18.0-553.34.1.el8_10
AlmaLinux:8kernel-docbefore 4.18.0-553.34.1.el8_104.18.0-553.34.1.el8_10
AlmaLinux:8kernel-headersbefore 4.18.0-553.34.1.el8_104.18.0-553.34.1.el8_10
AlmaLinux:8kernel-modulesbefore 4.18.0-553.34.1.el8_104.18.0-553.34.1.el8_10
AlmaLinux:8kernel-modules-extrabefore 4.18.0-553.34.1.el8_104.18.0-553.34.1.el8_10
AlmaLinux:8kernel-rtbefore 4.18.0-553.34.1.rt7.375.el8_104.18.0-553.34.1.rt7.375.el8_10
AlmaLinux:8kernel-rt-corebefore 4.18.0-553.34.1.rt7.375.el8_104.18.0-553.34.1.rt7.375.el8_10
AlmaLinux:8kernel-rt-debugbefore 4.18.0-553.34.1.rt7.375.el8_104.18.0-553.34.1.rt7.375.el8_10
AlmaLinux:8kernel-rt-debug-corebefore 4.18.0-553.34.1.rt7.375.el8_104.18.0-553.34.1.rt7.375.el8_10
AlmaLinux:8kernel-rt-debug-develbefore 4.18.0-553.34.1.rt7.375.el8_104.18.0-553.34.1.rt7.375.el8_10
AlmaLinux:8kernel-rt-debug-modulesbefore 4.18.0-553.34.1.rt7.375.el8_104.18.0-553.34.1.rt7.375.el8_10
AlmaLinux:8kernel-rt-debug-modules-extrabefore 4.18.0-553.34.1.rt7.375.el8_104.18.0-553.34.1.rt7.375.el8_10
AlmaLinux:8kernel-rt-develbefore 4.18.0-553.34.1.rt7.375.el8_104.18.0-553.34.1.rt7.375.el8_10
AlmaLinux:8kernel-rt-modulesbefore 4.18.0-553.34.1.rt7.375.el8_104.18.0-553.34.1.rt7.375.el8_10

+96

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2024-53123Dec 2, 2024 · mptcp: error out earlier on disconnect
    22Monitor
  • ← EarlierCVE-2024-53114Dec 2, 2024 · x86/CPU/AMD: Clear virtualized VMLOAD/VMSAVE on Zen4 client
    22Monitor
  • Later →CVE-2024-53124Dec 2, 2024 · net: fix data-races around sk->sk_forward_alloc
    18Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux0a9a182ea5c7bb0374e527130fd85024ace7279bVendor (CNA)
Linux Linux24995851d58c4a205ad0ffa7b2f21e479a9c8527Vendor (CNA)
Linux Linuxaad6412c63baa39dd813e81f16a14d976b3de2e8Vendor (CNA)
Linux Linuxce7356ae35943cc6494cc692e62d51a734062b7dVendor (CNA)
Linux Linuxff825ab2f455299c0c7287550915a8878e2a66e0Vendor (CNA)
azl3 kernel 6.6.57.1-7 on Azure Linux 3.06.6.64.2-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
azl3 kernel 6.6.64.2-1 on Azure Linux 3.06.6.64.2-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 kernel 5.15.176.3-1 on CBL Mariner 2.05.15.176.3-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 kernel 5.15.180.1-1 on CBL Mariner 2.0CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 kernel 5.15.180.1-1 on CBL-Mariner 2.05.15.176.3-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
almalinux:bpftool7.4.0-503.21.1.el9_5 · AlmaLinux:9Package registry (OSV)
almalinux:kernel5.14.0-503.21.1.el9_5 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k5.14.0-503.21.1.el9_5 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-core5.14.0-503.21.1.el9_5 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug5.14.0-503.21.1.el9_5 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-core5.14.0-503.21.1.el9_5 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-devel5.14.0-503.21.1.el9_5 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-devel-matched5.14.0-503.21.1.el9_5 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules5.14.0-503.21.1.el9_5 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules-core5.14.0-503.21.1.el9_5 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules-extra5.14.0-503.21.1.el9_5 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-devel5.14.0-503.21.1.el9_5 · AlmaLinux:9Package registry (OSV)
debian:linux6.1.119-1 · Debian:12Package registry (OSV)
red hat:kpatch-patch-5_14_0-503_15_10:1-1.el9_5 · Red Hat:enterprise_linux:9::baseosPackage registry (OSV)
red hat:kpatch-patch-5_14_0-503_15_1-debuginfo0:1-1.el9_5 · Red Hat:enterprise_linux:9::baseosPackage registry (OSV)
red hat:kpatch-patch-5_14_0-503_15_1-debugsource0:1-1.el9_5 · Red Hat:enterprise_linux:9::baseosPackage registry (OSV)
red hat:kpatch-patch-5_14_0-70_112_10:1-2.el9_0 · Red Hat:rhel_e4s:9.0::baseosPackage registry (OSV)
red hat:kpatch-patch-5_14_0-70_112_1-debuginfo0:1-2.el9_0 · Red Hat:rhel_e4s:9.0::baseosPackage registry (OSV)
red hat:kpatch-patch-5_14_0-70_112_1-debugsource0:1-2.el9_0 · Red Hat:rhel_e4s:9.0::baseosPackage registry (OSV)
red hat:kpatch-patch-5_14_0-70_121_10:1-1.el9_0 · Red Hat:rhel_e4s:9.0::baseosPackage registry (OSV)

+7

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. SSVC exploitation— → none
  2. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (5 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records