github - ghsa-hx38-rpx2-8wv8

ghsa-hx38-rpx2-8wv8

Vulnerability from github

Published

2025-09-15 15:31

Modified

2025-09-15 15:31

Details

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

arm64/sme: Set new vector length before reallocating

As part of fixing the allocation of the buffer for SVE state when changing SME vector length we introduced an immediate reallocation of the SVE state, this is also done when changing the SVE vector length for consistency. Unfortunately this reallocation is done prior to writing the new vector length to the task struct, meaning the allocation is done with the old vector length and can lead to memory corruption due to an undersized buffer being used.

Move the update of the vector length before the allocation to ensure that the new vector length is taken into account.

For some reason this isn't triggering any problems when running tests on the arm64 fixes branch (even after repeated tries) but is triggering issues very often after merge into mainline.

Show details on source website

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{
  "affected": [],
  "aliases": [
    "CVE-2023-53184"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-15T14:15:40Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\narm64/sme: Set new vector length before reallocating\n\nAs part of fixing the allocation of the buffer for SVE state when changing\nSME vector length we introduced an immediate reallocation of the SVE state,\nthis is also done when changing the SVE vector length for consistency.\nUnfortunately this reallocation is done prior to writing the new vector\nlength to the task struct, meaning the allocation is done with the old\nvector length and can lead to memory corruption due to an undersized buffer\nbeing used.\n\nMove the update of the vector length before the allocation to ensure that\nthe new vector length is taken into account.\n\nFor some reason this isn\u0027t triggering any problems when running tests on\nthe arm64 fixes branch (even after repeated tries) but is triggering\nissues very often after merge into mainline.",
  "id": "GHSA-hx38-rpx2-8wv8",
  "modified": "2025-09-15T15:31:24Z",
  "published": "2025-09-15T15:31:24Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53184"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/05d881b85b48c7ac6a7c92ce00aa916c4a84d052"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/356e711640aea6ed145da9407499388b45264cb4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/807ada0e4aa3c9090c66009a99fa530c462012c9"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2023-53184 (GCVE-0-2023-53184)

Vulnerability from cvelistv5

Published

2025-09-15 14:04

Modified

2025-09-15 14:04

Severity ?

Summary

In the Linux kernel, the following vulnerability has been resolved: arm64/sme: Set new vector length before reallocating As part of fixing the allocation of the buffer for SVE state when changing SME vector length we introduced an immediate reallocation of the SVE state, this is also done when changing the SVE vector length for consistency. Unfortunately this reallocation is done prior to writing the new vector length to the task struct, meaning the allocation is done with the old vector length and can lead to memory corruption due to an undersized buffer being used. Move the update of the vector length before the allocation to ensure that the new vector length is taken into account. For some reason this isn't triggering any problems when running tests on the arm64 fixes branch (even after repeated tries) but is triggering issues very often after merge into mainline.

References

▼	URL	Tags
	https://git.kernel.org/stable/c/356e711640aea6ed145da9407499388b45264cb4
	https://git.kernel.org/stable/c/807ada0e4aa3c9090c66009a99fa530c462012c9
	https://git.kernel.org/stable/c/05d881b85b48c7ac6a7c92ce00aa916c4a84d052

Impacted products

Vendor

Product

Version

▼

Linux

Version: aa5cf8bd1318b6e7d500668b318c07a71cde783b
Version: 292f0453b0d021bb1d3f64648bfdfca093512214
Version: d4d5be94a87872421ea2569044092535aff0b886

Linux

Version: 6.1.42 ≤
Version: 6.4.7 ≤

Show details on NVD website

JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/arm64/kernel/fpsimd.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "356e711640aea6ed145da9407499388b45264cb4",
              "status": "affected",
              "version": "aa5cf8bd1318b6e7d500668b318c07a71cde783b",
              "versionType": "git"
            },
            {
              "lessThan": "807ada0e4aa3c9090c66009a99fa530c462012c9",
              "status": "affected",
              "version": "292f0453b0d021bb1d3f64648bfdfca093512214",
              "versionType": "git"
            },
            {
              "lessThan": "05d881b85b48c7ac6a7c92ce00aa916c4a84d052",
              "status": "affected",
              "version": "d4d5be94a87872421ea2569044092535aff0b886",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/arm64/kernel/fpsimd.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "6.1.43",
              "status": "affected",
              "version": "6.1.42",
              "versionType": "semver"
            },
            {
              "lessThan": "6.4.8",
              "status": "affected",
              "version": "6.4.7",
              "versionType": "semver"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.43",
                  "versionStartIncluding": "6.1.42",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.4.8",
                  "versionStartIncluding": "6.4.7",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\narm64/sme: Set new vector length before reallocating\n\nAs part of fixing the allocation of the buffer for SVE state when changing\nSME vector length we introduced an immediate reallocation of the SVE state,\nthis is also done when changing the SVE vector length for consistency.\nUnfortunately this reallocation is done prior to writing the new vector\nlength to the task struct, meaning the allocation is done with the old\nvector length and can lead to memory corruption due to an undersized buffer\nbeing used.\n\nMove the update of the vector length before the allocation to ensure that\nthe new vector length is taken into account.\n\nFor some reason this isn\u0027t triggering any problems when running tests on\nthe arm64 fixes branch (even after repeated tries) but is triggering\nissues very often after merge into mainline."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-09-15T14:04:36.754Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/356e711640aea6ed145da9407499388b45264cb4"
        },
        {
          "url": "https://git.kernel.org/stable/c/807ada0e4aa3c9090c66009a99fa530c462012c9"
        },
        {
          "url": "https://git.kernel.org/stable/c/05d881b85b48c7ac6a7c92ce00aa916c4a84d052"
        }
      ],
      "title": "arm64/sme: Set new vector length before reallocating",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53184",
    "datePublished": "2025-09-15T14:04:36.754Z",
    "dateReserved": "2025-09-15T13:59:19.065Z",
    "dateUpdated": "2025-09-15T14:04:36.754Z",
    "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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