CVE-2022-49103

Summary

In the Linux kernel, the following vulnerability has been resolved:

NFSv4.2: fix reference count leaks in _nfs42_proc_copy_notify()

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The reference counting issue happens in two error paths in the function _nfs42_proc_copy_notify(). In both error paths, the function simply returns the error code and forgets to balance the refcount of object ctx, bumped by get_nfs_open_context() earlier, which may cause refcount leaks.

Fix it by balancing refcount of the ctx object before the function returns in both error paths.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux0491567b51efeca807da1125a1a0d5193875e286 < 9b9feec97c1fc7dd9bb69f62c4905cddf1801599affected
LinuxLinux0491567b51efeca807da1125a1a0d5193875e286 < b37f482ba9f0e6382c188e3fccf6c4b2fdc938ebaffected
LinuxLinux0491567b51efeca807da1125a1a0d5193875e286 < fb73bf6305f4eb8f0cf9a61ee874d55f019d6dc4affected
LinuxLinux0491567b51efeca807da1125a1a0d5193875e286 < f46f632f9cfae4b2e3635fa58840a8ec584c42e3affected
LinuxLinux0491567b51efeca807da1125a1a0d5193875e286 < b7f114edd54326f730a754547e7cfb197b5bc132affected
LinuxLinux5.5affected
LinuxLinux0 < 5.5unaffected
LinuxLinux5.10.111 <= 5.10.*unaffected
LinuxLinux5.15.34 <= 5.15.*unaffected
LinuxLinux5.16.20 <= 5.16.*unaffected
LinuxLinux5.17.3 <= 5.17.*unaffected
LinuxLinux5.18 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References