CVE-2024-43832 s390/uv: Don't call folio_wait_writeback() without a folio reference

2024-08-1709:21:50

Linux

www.cve.org

linux kernel

vulnerability

s390/uv

EPSS

Percentile

16.3%

JSON

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

s390/uv: Don’t call folio_wait_writeback() without a folio reference

folio_wait_writeback() requires that no spinlocks are held and that
a folio reference is held, as documented. After we dropped the PTL, the
folio could get freed concurrently. So grab a temporary reference.

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "arch/s390/kernel/uv.c"
    ],
    "versions": [
      {
        "version": "214d9bbcd3a6",
        "lessThan": "1a1eb2f3fc45",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "214d9bbcd3a6",
        "lessThan": "8736604ef533",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "214d9bbcd3a6",
        "lessThan": "b21aba72aadd",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "214d9bbcd3a6",
        "lessThan": "3f29f6537f54",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "arch/s390/kernel/uv.c"
    ],
    "versions": [
      {
        "version": "5.7",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.7",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.103",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.44",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.10.3",
        "lessThanOrEqual": "6.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.11",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]