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CVE-2024-45009· NVD / CVE Program· CNA Linux

mptcp: pm: only decrement add_addr_accepted for MPJ req

In the Linux kernel, the following vulnerability has been resolved: mptcp: pm: only decrement add_addr_accepted for MPJ req Adding the following warning ... WARN_ON_ONCE(msk->pm.add_addr_accepted == 0) ... before decrementing the add_addr_accepted counter helped to find a bug when running the "remove single subflow" subtest from the mptcp_join.sh selftest. Removing a 'subflow' endpoint will first trigger a RM_ADDR, then the subflow closure. Before this patch, and upon the reception of the RM_ADDR, the other peer will then try to decrement this add_addr_accepted. That's not correct because the attached subflows have not been created upon the reception of an ADD_ADDR. A way to solve that is to decrement the counter only if the attached subflow was an MP_JOIN to a remote id that was not 0, and initiated by the host receiving the RM_ADDR.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Sep 11, 2024
Updated
Aug 5, 2026
EPSS
0.5% · 42th percentile
CWE
—
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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
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
5.5
CNA · Linux
8.2
2.7 point gap

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

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

Affected systems

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 5.15.167
  • linux linux kernel5.16 and later · before 6.1.107
  • linux linux kernel6.2 and later · before 6.6.48
  • linux linux kernel6.7 and later · before 6.10.7
  • linux linux kernel6.11

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
    • d0876b2284cf8b34dd214b2d0aa21071c345da59 and later · before 35b31f5549ede4070566b949781e83495906b43daffected · git
    • d0876b2284cf8b34dd214b2d0aa21071c345da59 and later · before 85b866e4c4e63a1d7afb58f1e24273caad03d0b7affected · git
    • d0876b2284cf8b34dd214b2d0aa21071c345da59 and later · before d20bf2c96d7ffd171299b32f562f70e5bf5dc608affected · git
    • d0876b2284cf8b34dd214b2d0aa21071c345da59 and later · before 2060f1efab370b496c4903b840844ecaff324c3caffected · git
    • d0876b2284cf8b34dd214b2d0aa21071c345da59 and later · before 1c1f721375989579e46741f59523e39ec9b2a9bdaffected · git
    • before 5.10not affected · semver
    • 5.15.167 and later · up to and including 5.15.*not affected · semver
    • 6.1.107 and later · up to and including 6.1.*not affected · semver
    • 6.6.48 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
Debian:12linuxbefore 6.1.112-16.1.112-1
Debian:13linuxbefore 6.10.7-16.10.7-1
openSUSE:Leap 15.6dtb-aarch64before 6.4.0-150600.23.42.16.4.0-150600.23.42.1
openSUSE:Leap 15.6kernel-debugbefore 6.4.0-150600.23.42.26.4.0-150600.23.42.2
openSUSE:Leap 15.6kernel-kvmsmallbefore 6.4.0-150600.23.42.26.4.0-150600.23.42.2
openSUSE:Leap 15.6kernel-obs-qabefore 6.4.0-150600.23.42.16.4.0-150600.23.42.1
SUSE:Linux Enterprise Live Patching 15 SP6kernel-livepatch-SLE15-SP6_Update_9before 1-150600.13.3.41-150600.13.3.4
SUSE:Linux Enterprise Live Patching 15 SP6kernel-livepatch-SLE15-SP6_Update_9before 1-150600.13.3.41-150600.13.3.4
SUSE:Linux Enterprise Live Patching 15 SP6kernel-livepatch-SLE15-SP6-RT_Update_9before 1-150600.1.3.21-150600.1.3.2
SUSE:Linux Enterprise Live Patching 15 SP6kernel-livepatch-SLE15-SP6-RT_Update_9before 1-150600.1.3.21-150600.1.3.2
SUSE:Linux Enterprise Module for Basesystem 15 SP6kernel-64kbbefore 6.4.0-150600.23.42.26.4.0-150600.23.42.2
SUSE:Linux Enterprise Module for Basesystem 15 SP6kernel-64kbbefore 6.4.0-150600.23.42.26.4.0-150600.23.42.2
SUSE:Linux Enterprise Module for Basesystem 15 SP6kernel-defaultbefore 6.4.0-150600.23.42.26.4.0-150600.23.42.2
SUSE:Linux Enterprise Module for Basesystem 15 SP6kernel-defaultbefore 6.4.0-150600.23.42.26.4.0-150600.23.42.2
SUSE:Linux Enterprise Module for Basesystem 15 SP6kernel-default-basebefore 6.4.0-150600.23.42.2.150600.12.18.46.4.0-150600.23.42.2.150600.12.18.4
SUSE:Linux Enterprise Module for Basesystem 15 SP6kernel-default-basebefore 6.4.0-150600.23.42.2.150600.12.18.46.4.0-150600.23.42.2.150600.12.18.4
SUSE:Linux Enterprise Module for Basesystem 15 SP6kernel-sourcebefore 6.4.0-150600.23.42.16.4.0-150600.23.42.1
SUSE:Linux Enterprise Module for Basesystem 15 SP6kernel-sourcebefore 6.4.0-150600.23.42.16.4.0-150600.23.42.1
SUSE:Linux Enterprise Module for Basesystem 15 SP6kernel-zfcpdumpbefore 6.4.0-150600.23.42.26.4.0-150600.23.42.2
SUSE:Linux Enterprise Module for Basesystem 15 SP6kernel-zfcpdumpbefore 6.4.0-150600.23.42.26.4.0-150600.23.42.2
SUSE:Linux Enterprise Module for Confidential Computing Technical Preview 15 SP6kernel-cocobefore 6.4.0-15061.18.coco15sp6.16.4.0-15061.18.coco15sp6.1
SUSE:Linux Enterprise Module for Confidential Computing Technical Preview 15 SP6kernel-coco_debugbefore 6.4.0-15061.18.coco15sp6.16.4.0-15061.18.coco15sp6.1
SUSE:Linux Enterprise Module for Confidential Computing Technical Preview 15 SP6kernel-source-cocobefore 6.4.0-15061.18.coco15sp6.16.4.0-15061.18.coco15sp6.1
SUSE:Linux Enterprise Module for Confidential Computing Technical Preview 15 SP6kernel-syms-cocobefore 6.4.0-15061.18.coco15sp6.16.4.0-15061.18.coco15sp6.1

+20

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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 Linux1c1f721375989579e46741f59523e39ec9b2a9bdVendor (CNA)
Linux Linux2060f1efab370b496c4903b840844ecaff324c3cVendor (CNA)
Linux Linux35b31f5549ede4070566b949781e83495906b43dVendor (CNA)
Linux Linux85b866e4c4e63a1d7afb58f1e24273caad03d0b7Vendor (CNA)
Linux Linuxd20bf2c96d7ffd171299b32f562f70e5bf5dc608Vendor (CNA)
debian:linux6.1.112-1 · Debian:12Package registry (OSV)
opensuse:kernel-azure6.4.0-150600.8.31.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-source-azure6.4.0-150600.8.31.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-syms-azure6.4.0-150600.8.31.1 · openSUSE:Leap 15.6Package registry (OSV)
suse:kernel-64kb6.4.0-150600.23.42.2 · SUSE:Linux Enterprise Module for Basesystem 15 SP6Package registry (OSV)
suse:kernel-azure6.4.0-150600.8.31.1 · SUSE:Linux Enterprise Module for Public Cloud 15 SP6Package registry (OSV)
suse:kernel-coco6.4.0-15061.18.coco15sp6.1 · SUSE:Linux Enterprise Module for Confidential Computing Technical Preview 15 SP6Package registry (OSV)
suse:kernel-coco_debug6.4.0-15061.18.coco15sp6.1 · SUSE:Linux Enterprise Module for Confidential Computing Technical Preview 15 SP6Package registry (OSV)
suse:kernel-default6.4.0-150600.23.42.2 · SUSE:Linux Enterprise Module for Basesystem 15 SP6Package registry (OSV)
suse:kernel-default-base6.4.0-150600.23.42.2.150600.12.18.4 · SUSE:Linux Enterprise Module for Basesystem 15 SP6Package registry (OSV)
suse:kernel-docs6.4.0-150600.23.42.1 · SUSE:Linux Enterprise Module for Development Tools 15 SP6Package registry (OSV)
suse:kernel-source6.4.0-150600.23.42.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP6Package registry (OSV)
suse:kernel-source-azure6.4.0-150600.8.31.1 · SUSE:Linux Enterprise Module for Public Cloud 15 SP6Package registry (OSV)
suse:kernel-source-coco6.4.0-15061.18.coco15sp6.1 · SUSE:Linux Enterprise Module for Confidential Computing Technical Preview 15 SP6Package registry (OSV)
suse:kernel-syms-azure6.4.0-150600.8.31.1 · SUSE:Linux Enterprise Module for Public Cloud 15 SP6Package registry (OSV)
suse:kernel-syms-coco6.4.0-15061.18.coco15sp6.1 · SUSE:Linux Enterprise Module for Confidential Computing Technical Preview 15 SP6Package registry (OSV)
suse:kernel-zfcpdump6.4.0-150600.23.42.2 · SUSE:Linux Enterprise Module for Basesystem 15 SP6Package registry (OSV)

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.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

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.

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)

—

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.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Noroxi analysis

No Noroxi analysis for this record yet

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Change log

  1. Fix✗ → ✓

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References

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