fkie_cve-2025-21996
Vulnerability from fkie_nvd
Published
2025-04-03 08:15
Modified
2025-11-03 20:17
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/radeon: fix uninitialized size issue in radeon_vce_cs_parse() On the off chance that command stream passed from userspace via ioctl() call to radeon_vce_cs_parse() is weirdly crafted and first command to execute is to encode (case 0x03000001), the function in question will attempt to call radeon_vce_cs_reloc() with size argument that has not been properly initialized. Specifically, 'size' will point to 'tmp' variable before the latter had a chance to be assigned any value. Play it safe and init 'tmp' with 0, thus ensuring that radeon_vce_cs_reloc() will catch an early error in cases like these. Found by Linux Verification Center (linuxtesting.org) with static analysis tool SVACE. (cherry picked from commit 2d52de55f9ee7aaee0e09ac443f77855989c6b68)
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0effb378ebce52b897f85cd7f828854b8c7cb636Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3ce08215cad55c10a6eeeb33d3583b6cfffe3ab8Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5b4d9d20fd455a97920cf158dd19163b879cf65dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/78b07dada3f02f77762d0755a96d35f53b02be69Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9b2da9c673a0da1359a2151f7ce773e2f77d71a9Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dd1801aa01bba1760357f2a641346ae149686713Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dd8689b52a24807c2d5ce0a17cb26dc87f75235cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f5e049028124f755283f2c07e7a3708361ed1dc8Patch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.14
linux linux_kernel 6.14
linux linux_kernel 6.14
linux linux_kernel 6.14
linux linux_kernel 6.14
linux linux_kernel 6.14
linux linux_kernel 6.14


To clipboard 

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  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/radeon: fix uninitialized size issue in radeon_vce_cs_parse()\n\nOn the off chance that command stream passed from userspace via\nioctl() call to radeon_vce_cs_parse() is weirdly crafted and\nfirst command to execute is to encode (case 0x03000001), the function\nin question will attempt to call radeon_vce_cs_reloc() with size\nargument that has not been properly initialized. Specifically, \u0027size\u0027\nwill point to \u0027tmp\u0027 variable before the latter had a chance to be\nassigned any value.\n\nPlay it safe and init \u0027tmp\u0027 with 0, thus ensuring that\nradeon_vce_cs_reloc() will catch an early error in cases like these.\n\nFound by Linux Verification Center (linuxtesting.org) with static\nanalysis tool SVACE.\n\n(cherry picked from commit 2d52de55f9ee7aaee0e09ac443f77855989c6b68)"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/radeon: soluciona el problema de tama\u00f1o no inicializado en radeon_vce_cs_parse() En el improbable caso de que el flujo de comandos pasado desde el espacio de usuario a trav\u00e9s de la llamada ioctl() a radeon_vce_cs_parse() est\u00e9 manipulado de forma extra\u00f1a y el primer comando a ejecutar sea codificar (caso 0x03000001), la funci\u00f3n en cuesti\u00f3n intentar\u00e1 llamar a radeon_vce_cs_reloc() con el argumento de tama\u00f1o que no se ha inicializado correctamente. Espec\u00edficamente, \u0027size\u0027 apuntar\u00e1 a la variable \u0027tmp\u0027 antes de que a esta \u00faltima se le haya asignado alg\u00fan valor. Vaya a lo seguro e inicialice \u0027tmp\u0027 con 0, lo que garantiza que radeon_vce_cs_reloc() detecte un error temprano en casos como estos. Encontrado por el Centro de Verificaci\u00f3n de Linux (linuxtesting.org) con la herramienta de an\u00e1lisis est\u00e1tico SVACE. (seleccionado del commit 2d52de55f9ee7aaee0e09ac443f77855989c6b68)"
    }
  ],
  "id": "CVE-2025-21996",
  "lastModified": "2025-11-03T20:17:35.587",
  "metrics": {
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          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
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          "userInteraction": "NONE",
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}


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