HighFix available

padata: use integer wrap around to prevent deadlock on seq_nr overflow

Type: advisorySources: OSV

In the Linux kernel, the following vulnerability has been resolved: padata: use integer wrap around to prevent deadlock on seq_nr overflow When submitting more than 2^32 padata objects to padata_do_serial, the current sorting implementation incorrectly sorts padata objects with overflowed seq_nr, causing them to be placed before existing objects in the reorder list. This leads to a deadlock in the serialization process as padata_find_next cannot match padata->seq_nr and pd->processed because the padata instance with overflowed seq_nr will be selected next. To fix this, we use an unsigned integer wrap around to correctly sort padata objects in scenarios with integer overflow.

Products: Kernel
Affected versions: Not specified
Fixed versions: 5.10.227, 5.15.168, 6.1.113, 6.10.13, 6.11.2, 6.6.54
CVEs: CVE-2024-47739
Confirmed fixed CVEs: Not specified
Updated in this feed: 3 Nov 2026, 14:45 UTC · Revision 1

Source evidence

padata: use integer wrap around to prevent deadlock on seq_nr overflow

core-osv · Original source

Published 21 Oct 2024, 12:14 UTC

osv:CVE-2024-47739

Kernel

Fixed versions: 5.10.227, 5.15.168, 6.1.113, 6.6.54, 6.10.13, 6.11.2

Complete source record

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  "id": "112720f7511fbee4a84038047f910a4dd3e1d1039f7f29638f8aa17244ac0170",
  "url": "https://osv.dev/vulnerability/CVE-2024-47739",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "padata: use integer wrap around to prevent deadlock on seq_nr overflow",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: padata: use integer wrap around to prevent deadlock on seq_nr overflow When submitting more than 2^32 padata objects to padata_do_serial, the current sorting implementation incorrectly sorts padata objects with overflowed seq_nr, causing them to be placed before existing objects in the reorder list. This leads to a deadlock in the serialization process as padata_find_next cannot match padata->seq_nr and pd->processed because the padata instance with overflowed seq_nr will be selected next. To fix this, we use an unsigned integer wrap around to correctly sort padata objects in scenarios with integer overflow.",
    "evidence": "osv:CVE-2024-47739",
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      ],
      "modified": "2026-10-28T02:30:29.932458994Z",
      "provider": "osv",
      "references": [
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        "https://git.kernel.org/stable/c/1bd712de96ad7167fe0d608e706cd60587579f16",
        "https://git.kernel.org/stable/c/46c4079460f4dcaf445860679558eedef4e1bc91",
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        "https://git.kernel.org/stable/c/ab205e1c3846326f162180e56825b4ba38ce9c30",
        "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html",
        "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/47xxx/CVE-2024-47739.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-47739",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
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    },
    "related_cves": [
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        "evidence": "/id"
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    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 496482,
  "published_at": "2024-10-21T12:14:08.495+00:00"
}