CVE-2024-27049 wifi: mt76: mt7925e: fix use-after-free in free_irq()

2024-05-0112:54:32

Linux

www.cve.org

cve-2024-27049 wifi mt76 mt7925e use-after-free free_irq linux kernel vulnerability resolved commit a304e1b82808 patch debug shared irqs mt76_removed flag device removed resource access

AI Score

6.7

Confidence

Low

EPSS

Percentile

15.5%

JSON

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

wifi: mt76: mt7925e: fix use-after-free in free_irq()

From commit a304e1b82808 (“[PATCH] Debug shared irqs”), there is a test
to make sure the shared irq handler should be able to handle the unexpected
event after deregistration. For this case, let’s apply MT76_REMOVED flag to
indicate the device was removed and do not run into the resource access
anymore.

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/mt7925/pci.c"
    ],
    "versions": [
      {
        "version": "c948b5da6bbe",
        "lessThan": "84470b48af03",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "c948b5da6bbe",
        "lessThan": "6d9930096e1f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "c948b5da6bbe",
        "lessThan": "a5a5f4413d91",
        "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/mt7925/pci.c"
    ],
    "versions": [
      {
        "version": "6.7",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.7",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.7.11",
        "lessThanOrEqual": "6.7.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.8.2",
        "lessThanOrEqual": "6.8.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.9",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]