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 — nvmet-tcp: Fix a kernel panic when host sends an invalid H2C PDU length
AV AC PR UI S C I A CVSS EPSS %ile KEV
L L L N U N N H 5.5 .0068 49.4 —
AFFECTED
Product Versions Fixed
Linux 872d26a391da92ed8f0c0f5cb5fef428067b7f30 – —
Linux 5.0 – 5.4.268
TIMELINE
Feb 20 Reserved by Linux
Feb 23 Published (CNA: Linux)
Aug 4 RESCORED — CVE-2023-52454 (Linux). CVSS 7.5 → 5.5 (NVD).
Description
In the Linux kernel, the following vulnerability has been resolved:
nvmet-tcp: Fix a kernel panic when host sends an invalid H2C PDU length
If the host sends an H2CData command with an invalid DATAL,
the kernel may crash in nvmet_tcp_build_pdu_iovec().
Unable to handle kernel NULL pointer dereference at
virtual address 0000000000000000
lr : nvmet_tcp_io_work+0x6ac/0x718 [nvmet_tcp]
Call trace:
process_one_work+0x174/0x3c8
worker_thread+0x2d0/0x3e8
kthread+0x104/0x110
Fix the bug by raising a fatal error if DATAL isn't coherent
with the packet size.
Also, the PDU length should never exceed the MAXH2CDATA parameter which
has been communicated to the host in nvmet_tcp_handle_icreq().
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
| February 20, 2024 | Reserved | Reserved by Linux |
| February 23, 2024 | Published | Published (CNA: Linux) |
| August 4, 2026 | RESCORED | RESCORED — CVE-2023-52454 (Linux). CVSS 7.5 → 5.5 (NVD). |
Affected
Affected products and packages — 2 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
| Linux | Linux | — | 872d26a391da92ed8f0c0f5cb5fef428067b7f30 | — |
| Linux | Linux | — | 5.0 | 5.4.268 |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2023-52454 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.