CVE-2022-49905 (GCVE-0-2022-49905)
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: net/smc: Fix possible leaked pernet namespace in smc_init() In smc_init(), register_pernet_subsys(&smc_net_stat_ops) is called without any error handling. If it fails, registering of &smc_net_ops won't be reverted. And if smc_nl_init() fails, &smc_net_stat_ops itself won't be reverted. This leaves wild ops in subsystem linkedlist and when another module tries to call register_pernet_operations() it triggers page fault: BUG: unable to handle page fault for address: fffffbfff81b964c RIP: 0010:register_pernet_operations+0x1b9/0x5f0 Call Trace: <TASK> register_pernet_subsys+0x29/0x40 ebtables_init+0x58/0x1000 [ebtables] ...
References
Impacted products
Vendor Product Version
Linux Linux Version: 194730a9beb52d2b030ea45e12d94868d4a0e6fd
Version: 194730a9beb52d2b030ea45e12d94868d4a0e6fd
Version: 194730a9beb52d2b030ea45e12d94868d4a0e6fd
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{
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          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/smc/af_smc.c"
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/smc: Fix possible leaked pernet namespace in smc_init()\n\nIn smc_init(), register_pernet_subsys(\u0026smc_net_stat_ops) is called\nwithout any error handling.\nIf it fails, registering of \u0026smc_net_ops won\u0027t be reverted.\nAnd if smc_nl_init() fails, \u0026smc_net_stat_ops itself won\u0027t be reverted.\n\nThis leaves wild ops in subsystem linkedlist and when another module\ntries to call register_pernet_operations() it triggers page fault:\n\nBUG: unable to handle page fault for address: fffffbfff81b964c\nRIP: 0010:register_pernet_operations+0x1b9/0x5f0\nCall Trace:\n  \u003cTASK\u003e\n  register_pernet_subsys+0x29/0x40\n  ebtables_init+0x58/0x1000 [ebtables]\n  ..."
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      "providerMetadata": {
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    "cveId": "CVE-2022-49905",
    "datePublished": "2025-05-01T14:10:49.621Z",
    "dateReserved": "2025-05-01T14:05:17.246Z",
    "dateUpdated": "2025-05-04T08:48:22.654Z",
    "state": "PUBLISHED"
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  }
}


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