CVE-2025-21996 (GCVE-0-2025-21996)
Vulnerability from cvelistv5
Published
2025-04-03 07:18
Modified
2025-05-04 07:27
Severity ?
VLAI Severity ?
EPSS score ?
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
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| ▼ | Linux | Linux |
Version: 2fc5703abda201f138faf63bdca743d04dbf4b1a Version: 2fc5703abda201f138faf63bdca743d04dbf4b1a Version: 2fc5703abda201f138faf63bdca743d04dbf4b1a Version: 2fc5703abda201f138faf63bdca743d04dbf4b1a Version: 2fc5703abda201f138faf63bdca743d04dbf4b1a Version: 2fc5703abda201f138faf63bdca743d04dbf4b1a Version: 2fc5703abda201f138faf63bdca743d04dbf4b1a Version: 2fc5703abda201f138faf63bdca743d04dbf4b1a |
||||||
|
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"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)"
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"url": "https://git.kernel.org/stable/c/dd8689b52a24807c2d5ce0a17cb26dc87f75235c"
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"cveId": "CVE-2025-21996",
"datePublished": "2025-04-03T07:18:59.933Z",
"dateReserved": "2024-12-29T08:45:45.801Z",
"dateUpdated": "2025-05-04T07:27:03.444Z",
"state": "PUBLISHED"
},
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"nvd": "{\"cve\":{\"id\":\"CVE-2025-21996\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-04-03T08:15:15.007\",\"lastModified\":\"2025-04-14T12:31:44.620\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"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. 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}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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