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CVE Record

CVE-2022-49905: net/smc: Fix possible leaked pernet namespace in smc_init()

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] ...

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

This is a Linux kernel cleanup bug in SMC initialization error handling. If initialization fails, stale per-network-namespace operations can remain registered and later cause a kernel page fault when another module registers network namespace operations.

Executive priority

Handle through normal kernel patch governance, with higher priority for systems showing kernel instability or running exposed affected builds. Current evidence does not support emergency treatment based on exploitation.

Technical view

smc_init() called register_pernet_subsys(&smc_net_stat_ops) without complete rollback handling. Failures could leave smc_net_ops or smc_net_stat_ops in subsystem lists, creating invalid operations that can crash during later register_pernet_operations() calls.

Likely exposure

Exposure is limited to Linux systems running affected kernel builds identified by the CVE data. The bundle lists Linux kernel versions including 5.14, 5.15.78, 6.0.8, and 6.1, but distribution backports require vendor confirmation.

Exploitation context

The provided sources describe a kernel page fault triggered by faulty initialization cleanup. They do not show active exploitation, public exploit use, privilege requirements, or remote attack conditions. KEV status is false.

Researcher notes

The evidence supports a reliability and memory-safety issue in Linux SMC initialization rollback. The source bundle lacks CVSS, CWE, exploitability details, and distribution-specific affected ranges, so validation should focus on kernel commit or vendor backport presence.

Mitigation direction

  • Apply Linux kernel updates containing the referenced stable fixes.
  • Check distribution or appliance vendor advisories for backported fix status.
  • Prioritize reboot planning so systems actually run the updated kernel.
  • If no update is available, follow vendor guidance for temporary risk reduction.

Validation and detection

  • Inventory running kernel versions across Linux hosts.
  • Confirm the active kernel includes one of the referenced stable fixes or a vendor backport.
  • Review kernel logs for page faults involving register_pernet_operations or smc_init.
  • Track this CVE against vendor advisories until affected status is resolved.
Prepared
Confidence
medium
Sources
5

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

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CVE-2022-49905 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
3Timeline events
0ADP providers
4Source links

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux194730a9beb52d2b030ea45e12d94868d4a0e6fd, 194730a9beb52d2b030ea45e12d94868d4a0e6fd, 194730a9beb52d2b030ea45e12d94868d4a0e6fdunaffected
LinuxLinux5.14, 0, 5.15.78, 6.0.8, 6.1affected
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.