Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
Linux Linux — mptcp: pm: only decrement add_addr_accepted for MPJ req
AV AC PR UI S C I A CVSS EPSS %ile KEV
L L L N U N N H 5.5 .0052 42.2 —
AFFECTED
Product Versions Fixed
Linux d0876b2284cf8b34dd214b2d0aa21071c345da59 – —
Linux 5.10 – 5.15.167
TIMELINE
Aug 21 Reserved by Linux
Sep 11 Published (CNA: Linux)
Aug 4 RESCORED — CVE-2024-45009 (Linux). CVSS 8.2 → 5.5 (NVD).
Description
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.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
| August 21, 2024 | Reserved | Reserved by Linux |
| September 11, 2024 | Published | Published (CNA: Linux) |
| August 4, 2026 | RESCORED | RESCORED — CVE-2024-45009 (Linux). CVSS 8.2 → 5.5 (NVD). |
Affected
Affected products and packages — 2 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
| Linux | Linux | — | d0876b2284cf8b34dd214b2d0aa21071c345da59 | — |
| Linux | Linux | — | 5.10 | 5.15.167 |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2024-45009 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.