CVE-2021-47207 ALSA: gus: fix null pointer dereference on pointer block

2024-04-1018:56:39

Linux

www.cve.org

linux kernel

alsa

vulnerability

7.5 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

13.2%

JSON

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.

CNA Affected

[
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    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "sound/isa/gus/gus_dma.c"
    ],
    "versions": [
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    ],
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        "lessThanOrEqual": "4.9.*",
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      {
        "version": "5.16",
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        "versionType": "original_commit_for_fix"
      }
    ]
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]