github - ghsa-jfxc-phgj-xgp4

GHSA-JFXC-PHGJ-XGP4

Vulnerability from github – Published: 2025-06-18 12:30 – Updated: 2025-11-13 21:31

Details

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 ?

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2022-50046"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-401"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-06-18T11:15:33Z",
    "severity": "MODERATE"
  },
  "details": "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.",
  "id": "GHSA-jfxc-phgj-xgp4",
  "modified": "2025-11-13T21:31:18Z",
  "published": "2025-06-18T12:30:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50046"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/76fbeb1662b1c56514325118a07fba74dc4c79fe"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bfc48f1b0505ffcb03a6d749139b7577d6b81ae0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c0434f0e058648649250b8ed6078b66d773de723"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

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

Vulnerability from cvelistv5 – Published: 2025-06-18 11:01 – Updated: 2025-06-18 11:01

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

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/c0434f0e058648649…
	https://git.kernel.org/stable/c/76fbeb1662b1c5651…
	https://git.kernel.org/stable/c/bfc48f1b0505ffcb0…

Impacted products

Vendor

Product

Version

Linux

Affected: 5b7eb78486cd9ac58bfbd6d84ea0fe2d9fead03b , < c0434f0e058648649250b8ed6078b66d773de723 (git)
Affected: 5b7eb78486cd9ac58bfbd6d84ea0fe2d9fead03b , < 76fbeb1662b1c56514325118a07fba74dc4c79fe (git)
Affected: 5b7eb78486cd9ac58bfbd6d84ea0fe2d9fead03b , < bfc48f1b0505ffcb03a6d749139b7577d6b81ae0 (git)

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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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/sunrpc/sysfs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "c0434f0e058648649250b8ed6078b66d773de723",
              "status": "affected",
              "version": "5b7eb78486cd9ac58bfbd6d84ea0fe2d9fead03b",
              "versionType": "git"
            },
            {
              "lessThan": "76fbeb1662b1c56514325118a07fba74dc4c79fe",
              "status": "affected",
              "version": "5b7eb78486cd9ac58bfbd6d84ea0fe2d9fead03b",
              "versionType": "git"
            },
            {
              "lessThan": "bfc48f1b0505ffcb03a6d749139b7577d6b81ae0",
              "status": "affected",
              "version": "5b7eb78486cd9ac58bfbd6d84ea0fe2d9fead03b",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/sunrpc/sysfs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.14"
            },
            {
              "lessThan": "5.14",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.63",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.19.*",
              "status": "unaffected",
              "version": "5.19.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.63",
                  "versionStartIncluding": "5.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.19.4",
                  "versionStartIncluding": "5.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0",
                  "versionStartIncluding": "5.14",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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/c0434f0e058648649250b8ed6078b66d773de723"
        },
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          "url": "https://git.kernel.org/stable/c/76fbeb1662b1c56514325118a07fba74dc4c79fe"
        },
        {
          "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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    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50046",
    "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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  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-JFXC-PHGJ-XGP4

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

Tags

Sightings

Nomenclature