Vulnerability-Lookup

GHSA-H2CQ-P42H-RQ44

Vulnerability from github – Published: 2026-06-26 21:32 – Updated: 2026-07-06 21:30

Details

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

iommu/riscv: Remove overflows on the invalidation path

Since RISC-V supports a sign extended page table it should support a gather->end of ULONG_MAX, but if this happens it will infinite loop because of the overflow.

Also avoid overflow computing the length by moving the +1 to the other side of the <

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-2026-53312"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-835"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-26T20:17:24Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/riscv: Remove overflows on the invalidation path\n\nSince RISC-V supports a sign extended page table it should support\na gather-\u003eend of ULONG_MAX, but if this happens it will infinite loop\nbecause of the overflow.\n\nAlso avoid overflow computing the length by moving the +1 to the other\nside of the \u003c",
  "id": "GHSA-h2cq-p42h-rq44",
  "modified": "2026-07-06T21:30:26Z",
  "published": "2026-06-26T21:32:17Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53312"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/40a13b49957937427bc23e78eb50679df4396a47"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9f0632b0d4246675fa221aa1a3bffadf9c6bd9ac"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e4b7687784153481de45fd39fb97ba3919605c0c"
    }
  ],
  "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-2026-53312 (GCVE-0-2026-53312)

Vulnerability from cvelistv5 – Published: 2026-06-26 19:41 – Updated: 2026-06-26 19:41

Title

iommu/riscv: Remove overflows on the invalidation path

Summary

In the Linux kernel, the following vulnerability has been resolved: iommu/riscv: Remove overflows on the invalidation path Since RISC-V supports a sign extended page table it should support a gather->end of ULONG_MAX, but if this happens it will infinite loop because of the overflow. Also avoid overflow computing the length by moving the +1 to the other side of the <

Severity

No CVSS data available.

Assigner

Linux

References

3 references

URL	Tags
https://git.kernel.org/stable/c/9f0632b0d4246675f…
https://git.kernel.org/stable/c/e4b7687784153481d…
https://git.kernel.org/stable/c/40a13b49957937427…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 488ffbf181718b9ad8c1838cb249d60973e78eda , < 9f0632b0d4246675fa221aa1a3bffadf9c6bd9ac (git) Affected: 488ffbf181718b9ad8c1838cb249d60973e78eda , < e4b7687784153481de45fd39fb97ba3919605c0c (git) Affected: 488ffbf181718b9ad8c1838cb249d60973e78eda , < 40a13b49957937427bc23e78eb50679df4396a47 (git)
Linux	Linux	Affected: 6.13 Unaffected: 0 , < 6.13 (semver) Unaffected: 6.18.33 , ≤ 6.18.* (semver) Unaffected: 7.0.10 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/iommu/riscv/iommu.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
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              "versionType": "git"
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              "version": "488ffbf181718b9ad8c1838cb249d60973e78eda",
              "versionType": "git"
            },
            {
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              "versionType": "git"
            }
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        },
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          "versions": [
            {
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              "version": "6.13"
            },
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              "version": "6.18.33",
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            },
            {
              "lessThanOrEqual": "7.0.*",
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              "version": "7.0.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
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              "cpeMatch": [
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                },
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                }
              ],
              "negate": false,
              "operator": "OR"
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      "descriptions": [
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      "providerMetadata": {
        "dateUpdated": "2026-06-26T19:41:05.688Z",
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    "datePublished": "2026-06-26T19:41:05.688Z",
    "dateReserved": "2026-06-09T07:44:35.397Z",
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Sightings

Author	Source	Type	Date	Other

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-H2CQ-P42H-RQ44

CVE-2026-53312 (GCVE-0-2026-53312)

Tags

Sightings

Nomenclature