boxscore/security
CVE · referencelatest edition

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.

CVE-2023-52454MEDIUM
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).
CWE-476 · CNA: Linux · CVSS v3.1 · 8 references · NVD status: Modified

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
DateEventDetail
February 20, 2024ReservedReserved by Linux
February 23, 2024PublishedPublished (CNA: Linux)
August 4, 2026RESCOREDRESCORED — CVE-2023-52454 (Linux). CVSS 7.5 → 5.5 (NVD).

Affected

Affected products and packages — 2 rows
VendorProduct / PackageEcosystemVersion introducedFixed
LinuxLinux872d26a391da92ed8f0c0f5cb5fef428067b7f30
LinuxLinux5.05.4.268

Weaknesses

CWE-476

References (8)

Related

Authoritative record: CVE-2023-52454 at cve.org

Vendors: linux

Weaknesses: CWE-476

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.