github - ghsa-698j-xv88-2hj7

ghsa-698j-xv88-2hj7

Vulnerability from github

Published

2025-08-22 18:31

Modified

2025-08-22 18:31

Details

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

xfrm: state: initialize state_ptrs earlier in xfrm_state_find

In case of preemption, xfrm_state_look_at will find a different pcpu_id and look up states for that other CPU. If we matched a state for CPU2 in the state_cache while the lookup started on CPU1, we will jump to "found", but the "best" state that we got will be ignored and we will enter the "acquire" block. This block uses state_ptrs, which isn't initialized at this point.

Let's initialize state_ptrs just after taking rcu_read_lock. This will also prevent a possible misuse in the future, if someone adjusts this function.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-38675"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-08-22T16:15:43Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: state: initialize state_ptrs earlier in xfrm_state_find\n\nIn case of preemption, xfrm_state_look_at will find a different\npcpu_id and look up states for that other CPU. If we matched a state\nfor CPU2 in the state_cache while the lookup started on CPU1, we will\njump to \"found\", but the \"best\" state that we got will be ignored and\nwe will enter the \"acquire\" block. This block uses state_ptrs, which\nisn\u0027t initialized at this point.\n\nLet\u0027s initialize state_ptrs just after taking rcu_read_lock. This will\nalso prevent a possible misuse in the future, if someone adjusts this\nfunction.",
  "id": "GHSA-698j-xv88-2hj7",
  "modified": "2025-08-22T18:31:23Z",
  "published": "2025-08-22T18:31:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38675"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/463562f9591742be62ddde3b426a0533ed496955"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6bf2daafc51bcb9272c0fdff2afd38217337d0d3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/94d077c331730510d5611b438640a292097341f0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2025-38675 (GCVE-0-2025-38675)

Vulnerability from cvelistv5

Published

2025-08-22 16:04

Modified

2025-08-22 16:04

Severity ?

Summary

In the Linux kernel, the following vulnerability has been resolved: xfrm: state: initialize state_ptrs earlier in xfrm_state_find In case of preemption, xfrm_state_look_at will find a different pcpu_id and look up states for that other CPU. If we matched a state for CPU2 in the state_cache while the lookup started on CPU1, we will jump to "found", but the "best" state that we got will be ignored and we will enter the "acquire" block. This block uses state_ptrs, which isn't initialized at this point. Let's initialize state_ptrs just after taking rcu_read_lock. This will also prevent a possible misuse in the future, if someone adjusts this function.

References

▼	URL	Tags
	https://git.kernel.org/stable/c/6bf2daafc51bcb9272c0fdff2afd38217337d0d3
	https://git.kernel.org/stable/c/463562f9591742be62ddde3b426a0533ed496955
	https://git.kernel.org/stable/c/94d077c331730510d5611b438640a292097341f0

Impacted products

Vendor

Product

Version

▼

Linux

Version: a16871c7832ea6435abb6e0b58289ae7dcb7e4fc
Version: e952837f3ddb0ff726d5b582aa1aad9aa38d024d
Version: e952837f3ddb0ff726d5b582aa1aad9aa38d024d
Version: dd4c2a174994238d55ab54da2545543d36f4e0d0

Linux

Version: 6.14

Show details on NVD website

JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/xfrm/xfrm_state.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "6bf2daafc51bcb9272c0fdff2afd38217337d0d3",
              "status": "affected",
              "version": "a16871c7832ea6435abb6e0b58289ae7dcb7e4fc",
              "versionType": "git"
            },
            {
              "lessThan": "463562f9591742be62ddde3b426a0533ed496955",
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              "versionType": "git"
            },
            {
              "lessThan": "94d077c331730510d5611b438640a292097341f0",
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              "version": "e952837f3ddb0ff726d5b582aa1aad9aa38d024d",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "dd4c2a174994238d55ab54da2545543d36f4e0d0",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/xfrm/xfrm_state.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.14"
            },
            {
              "lessThan": "6.14",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.41",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.15.*",
              "status": "unaffected",
              "version": "6.15.9",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.16",
              "versionType": "original_commit_for_fix"
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          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.41",
                  "versionStartIncluding": "6.12.13",
                  "vulnerable": true
                },
                {
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                  "vulnerable": true
                },
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                  "vulnerable": true
                },
                {
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                }
              ],
              "negate": false,
              "operator": "OR"
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      ],
      "descriptions": [
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: state: initialize state_ptrs earlier in xfrm_state_find\n\nIn case of preemption, xfrm_state_look_at will find a different\npcpu_id and look up states for that other CPU. If we matched a state\nfor CPU2 in the state_cache while the lookup started on CPU1, we will\njump to \"found\", but the \"best\" state that we got will be ignored and\nwe will enter the \"acquire\" block. This block uses state_ptrs, which\nisn\u0027t initialized at this point.\n\nLet\u0027s initialize state_ptrs just after taking rcu_read_lock. This will\nalso prevent a possible misuse in the future, if someone adjusts this\nfunction."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-08-22T16:04:12.688Z",
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  "cveMetadata": {
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    "datePublished": "2025-08-22T16:04:12.688Z",
    "dateReserved": "2025-04-16T04:51:24.031Z",
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    "state": "PUBLISHED"
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}

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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