CVE-2022-50046 (GCVE-0-2022-50046)

Vulnerability from cvelistv5 – Published: 2025-06-18 11:01 – Updated: 2025-06-18 11:01
VLAI?
Title
net/sunrpc: fix potential memory leaks in rpc_sysfs_xprt_state_change()
Summary
In the Linux kernel, the following vulnerability has been resolved: net/sunrpc: fix potential memory leaks in rpc_sysfs_xprt_state_change() The issue happens on some error handling paths. When the function fails to grab the object `xprt`, it simply returns 0, forgetting to decrease the reference count of another object `xps`, which is increased by rpc_sysfs_xprt_kobj_get_xprt_switch(), causing refcount leaks. Also, the function forgets to check whether `xps` is valid before using it, which may result in NULL-dereferencing issues. Fix it by adding proper error handling code when either `xprt` or `xps` is NULL.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 5b7eb78486cd9ac58bfbd6d84ea0fe2d9fead03b , < c0434f0e058648649250b8ed6078b66d773de723 (git)
Affected: 5b7eb78486cd9ac58bfbd6d84ea0fe2d9fead03b , < 76fbeb1662b1c56514325118a07fba74dc4c79fe (git)
Affected: 5b7eb78486cd9ac58bfbd6d84ea0fe2d9fead03b , < bfc48f1b0505ffcb03a6d749139b7577d6b81ae0 (git)
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    Linux Linux Affected: 5.14
Unaffected: 0 , < 5.14 (semver)
Unaffected: 5.15.63 , ≤ 5.15.* (semver)
Unaffected: 5.19.4 , ≤ 5.19.* (semver)
Unaffected: 6.0 , ≤ * (original_commit_for_fix)
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{
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/sunrpc/sysfs.c"
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              "negate": false,
              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sunrpc: fix potential memory leaks in rpc_sysfs_xprt_state_change()\n\nThe issue happens on some error handling paths. When the function\nfails to grab the object `xprt`, it simply returns 0, forgetting to\ndecrease the reference count of another object `xps`, which is\nincreased by rpc_sysfs_xprt_kobj_get_xprt_switch(), causing refcount\nleaks. Also, the function forgets to check whether `xps` is valid\nbefore using it, which may result in NULL-dereferencing issues.\n\nFix it by adding proper error handling code when either `xprt` or\n`xps` is NULL."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-06-18T11:01:47.155Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        {
          "url": "https://git.kernel.org/stable/c/bfc48f1b0505ffcb03a6d749139b7577d6b81ae0"
        }
      ],
      "title": "net/sunrpc: fix potential memory leaks in rpc_sysfs_xprt_state_change()",
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    "datePublished": "2025-06-18T11:01:47.155Z",
    "dateReserved": "2025-06-18T10:57:27.401Z",
    "dateUpdated": "2025-06-18T11:01:47.155Z",
    "state": "PUBLISHED"
  },
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}


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