CVE-2021-47032 mt76: mt7915: fix tx skb dma unmap

2024-02-2808:13:41

Linux

www.cve.org

linux kernel

cve-2021-47032

mt76

mt7915

dma mapping

6.6 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

15.7%

JSON

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

mt76: mt7915: fix tx skb dma unmap

The first pointer in the txp needs to be unmapped as well, otherwise it will
leak DMA mapping entries

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/net/wireless/mediatek/mt76/mt7915/mac.c"
    ],
    "versions": [
      {
        "version": "27d5c528a7ca",
        "lessThan": "4e7914ce2330",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "27d5c528a7ca",
        "lessThan": "4a9dcd6efb2a",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "27d5c528a7ca",
        "lessThan": "e2cdc9cb33c5",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "27d5c528a7ca",
        "lessThan": "7dcf3c04f0ac",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/net/wireless/mediatek/mt76/mt7915/mac.c"
    ],
    "versions": [
      {
        "version": "5.10",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.10",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.10.37",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.11.21",
        "lessThanOrEqual": "5.11.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.12.4",
        "lessThanOrEqual": "5.12.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.13",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]