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CVE-2021-47477

HIGH

7.8

Descricao

In the Linux kernel, the following vulnerability has been resolved: comedi: dt9812: fix DMA buffers on stack USB transfer buffers are typically mapped for DMA and must not be allocated on the stack or transfers will fail. Allocate proper transfer buffers in the various command helpers and return an error on short transfers instead of acting on random stack data. Note that this also fixes a stack info leak on systems where DMA is not used as 32 bytes are always sent to the device regardless of how short the command is.

Detalhes CVE

Pontuacao CVSS v3.17.8

SeveridadeHIGH

Vetor CVSSCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Vetor de ataqueLOCAL

ComplexidadeLOW

Privilegios necessariosLOW

Interacao do usuarioNONE

Publicado5/22/2024

Ultima modificacao9/24/2025

Fontenvd

Avistamentos honeypot0

Produtos afetados

linux:linux_kernel

Fraquezas (CWE)

CWE-787

Referencias

https://git.kernel.org/stable/c/20cebb8b620dc987e55ddc46801de986e081757e(416baaa9-dc9f-4396-8d5f-8c081fb06d67)

https://git.kernel.org/stable/c/365a346cda82f51d835c49136a00a9df8a78c7f2(416baaa9-dc9f-4396-8d5f-8c081fb06d67)

https://git.kernel.org/stable/c/39ea61037ae78f14fa121228dd962ea3280eacf3(416baaa9-dc9f-4396-8d5f-8c081fb06d67)

https://git.kernel.org/stable/c/3ac273d154d634e2034508a14db82a95d7ad12ed(416baaa9-dc9f-4396-8d5f-8c081fb06d67)

https://git.kernel.org/stable/c/3efb7af8ac437085b6c776e5b54830b149d86efe(416baaa9-dc9f-4396-8d5f-8c081fb06d67)

https://git.kernel.org/stable/c/536de747bc48262225889a533db6650731ab25d3(416baaa9-dc9f-4396-8d5f-8c081fb06d67)

https://git.kernel.org/stable/c/786f5b03450454557ff858a8bead5d7c0cbf78d6(416baaa9-dc9f-4396-8d5f-8c081fb06d67)

https://git.kernel.org/stable/c/8a52bc480992c7c9da3ebfea456af731f50a4b97(416baaa9-dc9f-4396-8d5f-8c081fb06d67)

https://git.kernel.org/stable/c/a6af69768d5cb4b2528946d53be5fa19ade37723(416baaa9-dc9f-4396-8d5f-8c081fb06d67)

https://git.kernel.org/stable/c/20cebb8b620dc987e55ddc46801de986e081757e(af854a3a-2127-422b-91ae-364da2661108)

https://git.kernel.org/stable/c/365a346cda82f51d835c49136a00a9df8a78c7f2(af854a3a-2127-422b-91ae-364da2661108)

https://git.kernel.org/stable/c/39ea61037ae78f14fa121228dd962ea3280eacf3(af854a3a-2127-422b-91ae-364da2661108)

https://git.kernel.org/stable/c/3ac273d154d634e2034508a14db82a95d7ad12ed(af854a3a-2127-422b-91ae-364da2661108)

https://git.kernel.org/stable/c/3efb7af8ac437085b6c776e5b54830b149d86efe(af854a3a-2127-422b-91ae-364da2661108)

https://git.kernel.org/stable/c/536de747bc48262225889a533db6650731ab25d3(af854a3a-2127-422b-91ae-364da2661108)

https://git.kernel.org/stable/c/786f5b03450454557ff858a8bead5d7c0cbf78d6(af854a3a-2127-422b-91ae-364da2661108)

https://git.kernel.org/stable/c/8a52bc480992c7c9da3ebfea456af731f50a4b97(af854a3a-2127-422b-91ae-364da2661108)

https://git.kernel.org/stable/c/a6af69768d5cb4b2528946d53be5fa19ade37723(af854a3a-2127-422b-91ae-364da2661108)

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