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 — RDMA/siw: Fix connection failure handling
AV AC PR UI S C I A CVSS EPSS %ile KEV
L L L N U N N H 5.5 .0066 48.9 —
AFFECTED
Product Versions Fixed
Linux 6c52fdc244b5ccc468006fd65a504d4ee33743c7 – —
Linux 5.3 – 5.4.258
TIMELINE
Feb 20 Reserved by Linux
Mar 2 Published (CNA: Linux)
Aug 4 RESCORED — CVE-2023-52513 (Linux). CVSS 7.5 → 5.5 (NVD).
Description
In the Linux kernel, the following vulnerability has been resolved:
RDMA/siw: Fix connection failure handling
In case immediate MPA request processing fails, the newly
created endpoint unlinks the listening endpoint and is
ready to be dropped. This special case was not handled
correctly by the code handling the later TCP socket close,
causing a NULL dereference crash in siw_cm_work_handler()
when dereferencing a NULL listener. We now also cancel
the useless MPA timeout, if immediate MPA request
processing fails.
This patch furthermore simplifies MPA processing in general:
Scheduling a useless TCP socket read in sk_data_ready() upcall
is now surpressed, if the socket is already moved out of
TCP_ESTABLISHED state.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
| February 20, 2024 | Reserved | Reserved by Linux |
| March 2, 2024 | Published | Published (CNA: Linux) |
| August 4, 2026 | RESCORED | RESCORED — CVE-2023-52513 (Linux). CVSS 7.5 → 5.5 (NVD). |
Affected
Affected products and packages — 2 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
| Linux | Linux | — | 6c52fdc244b5ccc468006fd65a504d4ee33743c7 | — |
| Linux | Linux | — | 5.3 | 5.4.258 |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2023-52513 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.