CVE-2021-47207

MediumCVSS 5.5/10Last modified Jun 17, 2026

Description

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

ALSA: gus: fix null pointer dereference on pointer block

The pointer block return from snd_gf1_dma_next_block could be null, so there is a potential null pointer dereference issue. Fix this by adding a null check before dereference.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-476

Affected software

VendorProductVersions
LinuxLinux>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 3e28e083dcdf03a18a083f8a47b6bb6b1604b5be; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < cb09c760c201f82df83babc92a5ffea0a01807fc; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 542fa721594a02d2aee0370a764d306ef48d030c; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < ab4c1ebc40f699f48346f634d7b72b9c5193f315; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < c6d2cefdd05c4810c416fb8d384b5c377bd977bc; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 1ac6cd87d8ddd36c43620f82c4d65b058f725f0f; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 16721797dcef2c7c030ffe73a07f39a65f9323c3; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < a0d21bb3279476c777434c40d969ea88ca64f9aa
LinuxLinux2.6.12

References

Timeline

Published
Apr 10, 2024
Last modified
Jun 17, 2026
NVD status
Analyzed

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CVE-2021-47207: Medium severity, CVSS 5.5 | Vulnix