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CVE-2021-47655

Estado: ModificadaMedia (5.5)—

In the Linux kernel, the following vulnerability has been resolved:

media: venus: vdec: fixed possible memory leak issue

The venus_helper_alloc_dpb_bufs() implementation allows an early return on an error path when checking the id from ida_alloc_min() which would not release the earlier buffer allocation.

Move the direct kfree() from the error checking of dma_alloc_attrs() to the common fail path to ensure that allocations are released on all error paths in this function.

Addresses-Coverity: 1494120 ("Resource leak")

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

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  "published": "2025-02-26T06:37:07.267",
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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: venus: vdec: fixed possible memory leak issue\n\nThe venus_helper_alloc_dpb_bufs() implementation allows an early return\non an error path when checking the id from ida_alloc_min() which would\nnot release the earlier buffer allocation.\n\nMove the direct kfree() from the error checking of dma_alloc_attrs() to\nthe common fail path to ensure that allocations are released on all\nerror paths in this function.\n\nAddresses-Coverity: 1494120 (\"Resource leak\")"
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    }
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  "lastModified": "2026-06-17T04:18:15.527",
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