CVE-2022-49920 (GCVE-0-2022-49920)
Vulnerability from cvelistv5
Published
2025-05-01 14:10
Modified
2025-05-04 08:48
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: netlink notifier might race to release objects commit release path is invoked via call_rcu and it runs lockless to release the objects after rcu grace period. The netlink notifier handler might win race to remove objects that the transaction context is still referencing from the commit release path. Call rcu_barrier() to ensure pending rcu callbacks run to completion if the list of transactions to be destroyed is not empty.
References
Impacted products
Vendor Product Version
Linux Linux Version: 6001a930ce0378b62210d4f83583fc88a903d89d
Version: 6001a930ce0378b62210d4f83583fc88a903d89d
Version: 6001a930ce0378b62210d4f83583fc88a903d89d
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{
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/netfilter/nf_tables_api.c"
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      "descriptions": [
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: netlink notifier might race to release objects\n\ncommit release path is invoked via call_rcu and it runs lockless to\nrelease the objects after rcu grace period. The netlink notifier handler\nmight win race to remove objects that the transaction context is still\nreferencing from the commit release path.\n\nCall rcu_barrier() to ensure pending rcu callbacks run to completion\nif the list of transactions to be destroyed is not empty."
        }
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      "providerMetadata": {
        "dateUpdated": "2025-05-04T08:48:43.498Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        {
          "url": "https://git.kernel.org/stable/c/d4bc8271db21ea9f1c86a1ca4d64999f184d4aae"
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      "title": "netfilter: nf_tables: netlink notifier might race to release objects",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49920",
    "datePublished": "2025-05-01T14:10:59.436Z",
    "dateReserved": "2025-05-01T14:05:17.252Z",
    "dateUpdated": "2025-05-04T08:48:43.498Z",
    "state": "PUBLISHED"
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  }
}


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