{"cve":"CVE-2023-52454","nvd":{"published":"2024-02-23T15:15:08.137","modified":"2026-08-04T10:18:28.533","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet-tcp: Fix a kernel panic when host sends an invalid H2C PDU length\n\nIf the host sends an H2CData command with an invalid DATAL,\nthe kernel may crash in nvmet_tcp_build_pdu_iovec().\n\nUnable to handle kernel NULL pointer dereference at\nvirtual address 0000000000000000\nlr : nvmet_tcp_io_work+0x6ac/0x718 [nvmet_tcp]\nCall trace:\n  process_one_work+0x174/0x3c8\n  worker_thread+0x2d0/0x3e8\n  kthread+0x104/0x110\n\nFix the bug by raising a fatal error if DATAL isn't coherent\nwith the packet size.\nAlso, the PDU length should never exceed the MAXH2CDATA parameter which\nhas been communicated to the host in nvmet_tcp_handle_icreq().","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-476"],"references":["https://git.kernel.org/stable/c/24e05760186dc070d3db190ca61efdbce23afc88","https://git.kernel.org/stable/c/2871aa407007f6f531fae181ad252486e022df42","https://git.kernel.org/stable/c/4cb3cf7177ae3666be7fb27d4ad4d72a295fb02d","https://git.kernel.org/stable/c/70154e8d015c9b4fb56c1a2ef1fc8b83d45c7f68","https://git.kernel.org/stable/c/ee5e7632e981673f42a50ade25e71e612e543d9d"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:45:59.823092188+00:00"},"epss":{"cve":"CVE-2023-52454","score":0.00676,"percentile":0.52243,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}