github - ghsa-wxfj-mrv6-qf72

ghsa-wxfj-mrv6-qf72

Vulnerability from github

Published

2025-09-05 18:31

Modified

2025-09-05 18:31

Details

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

s390/sclp: Fix SCCB present check

Tracing code called by the SCLP interrupt handler contains early exits if the SCCB address associated with an interrupt is NULL. This check is performed after physical to virtual address translation.

If the kernel identity mapping does not start at address zero, the resulting virtual address is never zero, so that the NULL checks won't work. Subsequently this may result in incorrect accesses to the first page of the identity mapping.

Fix this by introducing a function that handles the NULL case before address translation.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-39694"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-05T18:15:46Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/sclp: Fix SCCB present check\n\nTracing code called by the SCLP interrupt handler contains early exits\nif the SCCB address associated with an interrupt is NULL. This check is\nperformed after physical to virtual address translation.\n\nIf the kernel identity mapping does not start at address zero, the\nresulting virtual address is never zero, so that the NULL checks won\u0027t\nwork. Subsequently this may result in incorrect accesses to the first\npage of the identity mapping.\n\nFix this by introducing a function that handles the NULL case before\naddress translation.",
  "id": "GHSA-wxfj-mrv6-qf72",
  "modified": "2025-09-05T18:31:27Z",
  "published": "2025-09-05T18:31:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39694"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/430fa71027b6ac9bb0ce5532b8d0676777d4219a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/61605c847599fbfdfafe638607841c7d73719081"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/86c2825791c3836a8f77a954b9c5ebe6fab410c5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/aa5073ac1a2a274812f3b04c278992e68ff67cc7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bf83ae3537359af088d6577812ed93113dfbcb7b"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2025-39694 (GCVE-0-2025-39694)

Vulnerability from cvelistv5

Published

2025-09-05 17:21

Modified

2025-09-29 05:57

Severity ?

Summary

In the Linux kernel, the following vulnerability has been resolved: s390/sclp: Fix SCCB present check Tracing code called by the SCLP interrupt handler contains early exits if the SCCB address associated with an interrupt is NULL. This check is performed after physical to virtual address translation. If the kernel identity mapping does not start at address zero, the resulting virtual address is never zero, so that the NULL checks won't work. Subsequently this may result in incorrect accesses to the first page of the identity mapping. Fix this by introducing a function that handles the NULL case before address translation.

References

▼	URL	Tags
	https://git.kernel.org/stable/c/aa5073ac1a2a274812f3b04c278992e68ff67cc7
	https://git.kernel.org/stable/c/86c2825791c3836a8f77a954b9c5ebe6fab410c5
	https://git.kernel.org/stable/c/61605c847599fbfdfafe638607841c7d73719081
	https://git.kernel.org/stable/c/bf83ae3537359af088d6577812ed93113dfbcb7b
	https://git.kernel.org/stable/c/430fa71027b6ac9bb0ce5532b8d0676777d4219a

Impacted products

Vendor

Product

Version

▼

Linux

Version: ada1da31ce34248bc97ca8f801f2cf6efa378a81
Version: ada1da31ce34248bc97ca8f801f2cf6efa378a81
Version: ada1da31ce34248bc97ca8f801f2cf6efa378a81
Version: ada1da31ce34248bc97ca8f801f2cf6efa378a81
Version: ada1da31ce34248bc97ca8f801f2cf6efa378a81

Linux

Version: 5.16

Show details on NVD website

JSON

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{
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        {
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          "versions": [
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            },
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              "status": "unaffected",
              "version": "6.6.103",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.12.44",
              "versionType": "semver"
            },
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              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.17",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/sclp: Fix SCCB present check\n\nTracing code called by the SCLP interrupt handler contains early exits\nif the SCCB address associated with an interrupt is NULL. This check is\nperformed after physical to virtual address translation.\n\nIf the kernel identity mapping does not start at address zero, the\nresulting virtual address is never zero, so that the NULL checks won\u0027t\nwork. Subsequently this may result in incorrect accesses to the first\npage of the identity mapping.\n\nFix this by introducing a function that handles the NULL case before\naddress translation."
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    "cveId": "CVE-2025-39694",
    "datePublished": "2025-09-05T17:21:00.361Z",
    "dateReserved": "2025-04-16T07:20:57.114Z",
    "dateUpdated": "2025-09-29T05:57:33.748Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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