CVE-2022-49103 (GCVE-0-2022-49103)

Vulnerability from cvelistv5 – Published: 2025-02-26 01:54 – Updated: 2025-12-23 13:21
VLAI?
Title
NFSv4.2: fix reference count leaks in _nfs42_proc_copy_notify()
Summary
In the Linux kernel, the following vulnerability has been resolved: NFSv4.2: fix reference count leaks in _nfs42_proc_copy_notify() [You don't often get email from xiongx18@fudan.edu.cn. Learn why this is important at http://aka.ms/LearnAboutSenderIdentification.] 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.
Severity ?
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 0491567b51efeca807da1125a1a0d5193875e286 , < 9b9feec97c1fc7dd9bb69f62c4905cddf1801599 (git)
Affected: 0491567b51efeca807da1125a1a0d5193875e286 , < b37f482ba9f0e6382c188e3fccf6c4b2fdc938eb (git)
Affected: 0491567b51efeca807da1125a1a0d5193875e286 , < fb73bf6305f4eb8f0cf9a61ee874d55f019d6dc4 (git)
Affected: 0491567b51efeca807da1125a1a0d5193875e286 , < f46f632f9cfae4b2e3635fa58840a8ec584c42e3 (git)
Affected: 0491567b51efeca807da1125a1a0d5193875e286 , < b7f114edd54326f730a754547e7cfb197b5bc132 (git)
Create a notification for this product.
    Linux Linux Affected: 5.5
Unaffected: 0 , < 5.5 (semver)
Unaffected: 5.10.111 , ≤ 5.10.* (semver)
Unaffected: 5.15.34 , ≤ 5.15.* (semver)
Unaffected: 5.16.20 , ≤ 5.16.* (semver)
Unaffected: 5.17.3 , ≤ 5.17.* (semver)
Unaffected: 5.18 , ≤ * (original_commit_for_fix)
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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.