CVE-2024-27054 s390/dasd: fix double module refcount decrement

2024-05-0112:54:49

Linux

www.cve.org

linux kernel

vulnerability

fix

module refcount

s390/dasd

AI Score

7.6

Confidence

High

EPSS

Percentile

10.3%

JSON

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

s390/dasd: fix double module refcount decrement

Once the discipline is associated with the device, deleting the device
takes care of decrementing the module’s refcount. Doing it manually on
this error path causes refcount to artificially decrease on each error
while it should just stay the same.

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/s390/block/dasd.c"
    ],
    "versions": [
      {
        "version": "c020d722b110",
        "lessThan": "edbdb0d94143",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "c020d722b110",
        "lessThan": "ad999aa18103",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "c020d722b110",
        "lessThan": "ec09bcab32fc",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "c020d722b110",
        "lessThan": "fa18aa507ea7",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "c020d722b110",
        "lessThan": "ebc5a3bd79e5",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "c020d722b110",
        "lessThan": "c3116e62ddef",
        "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/s390/block/dasd.c"
    ],
    "versions": [
      {
        "version": "4.9",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.9",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15.153",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.83",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.23",
        "lessThanOrEqual": "6.6.*",
        "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"
      }
    ]
  }
]