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CVE-2021-47477

HIGH

7.8

Description

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.

Details CVE

Score CVSS v3.17.8

SeveriteHIGH

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

Vecteur d'attaqueLOCAL

ComplexiteLOW

Privileges requisLOW

Interaction utilisateurNONE

Publie5/22/2024

Derniere modification9/24/2025

Sourcenvd

Observations honeypot0

Produits affectes

linux:linux_kernel

Faiblesses (CWE)

CWE-787

References

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)

Correlations IOC

Aucune correlation enregistree

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