CVE-2023-54203

🗓️ 30 Dec 2025 12:09:07Reported by LinuxType

Fix slab-out-of-bounds in init_smb2_rsp_hdr when handling smb1 negotiate to avoid kernel memory corruption.

Reporter	Title	Published	Views	Family All 14
AstraLinux	Astra Linux - уязвимость в linux-5.10, linux-5.15	20 May 202605:53	–	astralinux
CNNVD	Linux kernel 安全漏洞	30 Dec 202500:00	–	cnnvd
Cvelist	CVE-2023-54203 ksmbd: fix slab-out-of-bounds in init_smb2_rsp_hdr	30 Dec 202512:09	–	cvelist
Debian CVE	CVE-2023-54203	30 Dec 202512:09	–	debiancve
EUVD	EUVD-2023-60438	30 Dec 202515:30	–	euvd
NVD	CVE-2023-54203	30 Dec 202513:16	–	nvd
OSV	BELL-CVE-2023-54203 CVE-2023-54203 does not affect BellSoft software	7 Jan 202606:07	–	osv
OSV	CVE-2023-54203 ksmbd: fix slab-out-of-bounds in init_smb2_rsp_hdr	30 Dec 202512:09	–	osv
OSV	UBUNTU-CVE-2023-54203	30 Dec 202513:16	–	osv
Positive Technologies	PT-2025-54032	30 Dec 202500:00	–	ptsecurity

Vulners

CNA

Node

linux linux_kernelRange5.15.105–5.15.145

linux linux_kernelRange6.1.22–6.1.24

linux linux_kernelRange6.2.9–6.2.11

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/ksmbd/server.c",
      "fs/ksmbd/smb2pdu.c",
      "fs/ksmbd/smb_common.c",
      "fs/ksmbd/smb_common.h"
    ],
    "versions": [
      {
        "version": "51a8534c0f35c0401e45f1055f914729cad98bf9",
        "lessThan": "921536046bd165efeb07beef5630aff35cd6a489",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0b3ec5671ac06829ccebdaeec05acedfec327f42",
        "lessThan": "a8334a0c535d0f0b4d64926c8fe0922ed98f7d43",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "cc32cd98a0aee4cc3eb611cbce11795b1aaa738a",
        "lessThan": "99a51c673b1d2d0b5a972353401b77612d9cc713",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "39b291b86b5988bf8753c3874d5c773399d09b96",
        "lessThan": "dc8289f912387c3bcfbc5d2db29c8947fa207c11",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/ksmbd/server.c",
      "fs/ksmbd/smb2pdu.c",
      "fs/ksmbd/smb_common.c",
      "fs/ksmbd/smb_common.h"
    ],
    "versions": [
      {
        "version": "5.15.105",
        "lessThan": "5.15.145",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "6.1.22",
        "lessThan": "6.1.24",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "6.2.9",
        "lessThan": "6.2.11",
        "status": "affected",
        "versionType": "semver"
      }
    ]
  }
]

Source	Link
git	www.git.kernel.org/stable/c/a8334a0c535d0f0b4d64926c8fe0922ed98f7d43
git	www.git.kernel.org/stable/c/921536046bd165efeb07beef5630aff35cd6a489
git	www.git.kernel.org/stable/c/99a51c673b1d2d0b5a972353401b77612d9cc713
git	www.git.kernel.org/stable/c/dc8289f912387c3bcfbc5d2db29c8947fa207c11

11 May 2026 19:57Current

6.2Medium risk

Vulners AI Score6.2

EPSS0.00021