Skip to content
Heist/ feed
High

padata: Fix pd UAF once and for all

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: padata: Fix pd UAF once and for all There is a race condition/UAF in padata_reorder that goes back to the initial commit. A reference count is taken at the start of the process in padata_do_parallel, and released at the end in padata_serial_worker. This reference count is (and only is) required for padata_replace to function correctly. If padata_replace is never called then there is no issue. In the function padata_reorder which serves as the core of padata, as soon as padata is added to queue->serial.list, and the associated spin lock released, that padata may be processed and the reference count on pd would go away. Fix this by getting the next padata before the squeue->serial lock is released. In order to make this possible, simplify padata_reorder by only calling it once the next padata arrives.

Announced Source revision 1
Original source ↗

CVE-2025-38584

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2025-38584

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "16295bec6398a3eedc9377e1af6ff4c71b98c300",
        "lessThan": "a2048e475e22b13dc3e53d485b7e6e11464ed9a6",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "16295bec6398a3eedc9377e1af6ff4c71b98c300",
        "lessThan": "73f132e60857038416540c3599b1de6033d7575a",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "16295bec6398a3eedc9377e1af6ff4c71b98c300",
        "lessThan": "609e59193fc6d9dd323f1c6ae1fdd721f1c79680",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "16295bec6398a3eedc9377e1af6ff4c71b98c300",
        "lessThan": "a11a12a9880ab37342b73c93cfe1a3ada02ff0db",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "16295bec6398a3eedc9377e1af6ff4c71b98c300",
        "lessThan": "f231d5d001ec75f5886c02d496a4c79edc383d45",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "16295bec6398a3eedc9377e1af6ff4c71b98c300",
        "lessThan": "dbe3e911a59bda6de96e7cae387ff882c2c177fa",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "16295bec6398a3eedc9377e1af6ff4c71b98c300",
        "lessThan": "cdf79bd2e1ecb3cc75631c73d8f4149be6019a52",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "16295bec6398a3eedc9377e1af6ff4c71b98c300",
        "lessThan": "71203f68c7749609d7fc8ae6ad054bdedeb24f91",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "include/linux/padata.h",
      "kernel/padata.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "2.6.34"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "2.6.34",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.258",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.209",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.175",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.140",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.86",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.15.10",
        "versionType": "semver",
        "lessThanOrEqual": "6.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.16.1",
        "versionType": "semver",
        "lessThanOrEqual": "6.16.*"
      },
      {
        "status": "unaffected",
        "version": "6.17",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "include/linux/padata.h",
      "kernel/padata.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2025-38584

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#30596 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement