Vulnerability-Lookup

CVE-2026-64304 (GCVE-0-2026-64304)

Vulnerability from cvelistv5 – Published: 2026-07-25 08:49 – Updated: 2026-07-25 08:49

Title

crypto: qat - validate RSA CRT component lengths

Summary

In the Linux kernel, the following vulnerability has been resolved: crypto: qat - validate RSA CRT component lengths The generic RSA key parser (rsa_helper.c) bounds each CRT component (p, q, dp, dq, qinv) by the modulus size n_sz, but qat_rsa_setkey_crt() allocates half-size DMA buffers (key_sz / 2) and right-aligns each component with: memcpy(dst + half_key_sz - len, src, len) When a CRT component is larger than half_key_sz the subtraction underflows and memcpy writes past the DMA buffer, causing memory corruption. Add a len > half_key_sz check next to the existing !len check for each of the five CRT components so the driver falls back to the non-CRT path instead of writing out of bounds.

Severity

No CVSS data available.

Assigner

Linux

References

8 references

URL	Tags
https://git.kernel.org/stable/c/6d99c5fadd2df4881…
https://git.kernel.org/stable/c/c34369473bfe92a0b…
https://git.kernel.org/stable/c/1002719d13072a5e4…
https://git.kernel.org/stable/c/500319830d76911c1…
https://git.kernel.org/stable/c/3d61a214fdcda41f1…
https://git.kernel.org/stable/c/6fb62b767f3e27661…
https://git.kernel.org/stable/c/ce42224487c504aee…
https://git.kernel.org/stable/c/b3ac7875658805972…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 879f77e9071f029e1c9bd5a75814ecf51370f846 , < 6d99c5fadd2df488103f64d6475b63ba6852202b (git) Affected: 879f77e9071f029e1c9bd5a75814ecf51370f846 , < c34369473bfe92a0b46ec78d6358e30341c7f481 (git) Affected: 879f77e9071f029e1c9bd5a75814ecf51370f846 , < 1002719d13072a5e4be1e993aa61dffb4a604e82 (git) Affected: 879f77e9071f029e1c9bd5a75814ecf51370f846 , < 500319830d76911c120dc0b9605f8c16d7702844 (git) Affected: 879f77e9071f029e1c9bd5a75814ecf51370f846 , < 3d61a214fdcda41f1ebfabbb483404032a7b4d91 (git) Affected: 879f77e9071f029e1c9bd5a75814ecf51370f846 , < 6fb62b767f3e27661e8f8d2f7b85f4e098fcdb1a (git) Affected: 879f77e9071f029e1c9bd5a75814ecf51370f846 , < ce42224487c504aee4b7ff3a7342e7b4d7e28cc9 (git) Affected: 879f77e9071f029e1c9bd5a75814ecf51370f846 , < b3ac78756588059729b9195fcc9f4b37d54057a5 (git)
Linux	Linux	Affected: 4.8 Unaffected: 0 , < 4.8 (semver) Unaffected: 5.10.261 , ≤ 5.10.* (semver) Unaffected: 5.15.212 , ≤ 5.15.* (semver) Unaffected: 6.1.178 , ≤ 6.1.* (semver) Unaffected: 6.6.145 , ≤ 6.6.* (semver) Unaffected: 6.12.96 , ≤ 6.12.* (semver) Unaffected: 6.18.39 , ≤ 6.18.* (semver) Unaffected: 7.1.4 , ≤ 7.1.* (semver) Unaffected: 7.2-rc1 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
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          "product": "Linux",
          "programFiles": [
            "drivers/crypto/intel/qat/qat_common/qat_asym_algs.c"
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              "version": "4.8"
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              "status": "unaffected",
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              "status": "unaffected",
              "version": "5.10.261",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "5.15.212",
              "versionType": "semver"
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              "status": "unaffected",
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              "versionType": "semver"
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              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.145",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.96",
              "versionType": "semver"
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              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
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              "status": "unaffected",
              "version": "7.1.4",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "7.2-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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                  "versionStartIncluding": "4.8",
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                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: qat - validate RSA CRT component lengths\n\nThe generic RSA key parser (rsa_helper.c) bounds each CRT component (p,\nq, dp, dq, qinv) by the modulus size n_sz, but qat_rsa_setkey_crt()\nallocates half-size DMA buffers (key_sz / 2) and right-aligns each\ncomponent with:\n\n    memcpy(dst + half_key_sz - len, src, len)\n\nWhen a CRT component is larger than half_key_sz the subtraction\nunderflows and memcpy writes past the DMA buffer, causing memory\ncorruption.\n\nAdd a len \u003e half_key_sz check next to the existing !len check for each\nof the five CRT components so the driver falls back to the non-CRT path\ninstead of writing out of bounds."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-25T08:49:38.873Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/6d99c5fadd2df488103f64d6475b63ba6852202b"
        },
        {
          "url": "https://git.kernel.org/stable/c/c34369473bfe92a0b46ec78d6358e30341c7f481"
        },
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        },
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        },
        {
          "url": "https://git.kernel.org/stable/c/b3ac78756588059729b9195fcc9f4b37d54057a5"
        }
      ],
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    "datePublished": "2026-07-25T08:49:38.873Z",
    "dateReserved": "2026-07-19T15:36:31.779Z",
    "dateUpdated": "2026-07-25T08:49:38.873Z",
    "state": "PUBLISHED"
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    "epss": {
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      "date": "2026-07-26",
      "epss": "0.00211",
      "percentile": "0.11455"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-64304\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-07-25T10:17:11.403\",\"lastModified\":\"2026-07-25T10:17:11.403\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ncrypto: qat - validate RSA CRT component lengths\\n\\nThe generic RSA key parser (rsa_helper.c) bounds each CRT component (p,\\nq, dp, dq, qinv) by the modulus size n_sz, but qat_rsa_setkey_crt()\\nallocates half-size DMA buffers (key_sz / 2) and right-aligns each\\ncomponent with:\\n\\n    memcpy(dst + half_key_sz - len, src, len)\\n\\nWhen a CRT component is larger than half_key_sz the subtraction\\nunderflows and memcpy writes past the DMA buffer, causing memory\\ncorruption.\\n\\nAdd a len \u003e half_key_sz check next to the existing !len check for each\\nof the five CRT components so the driver falls back to the non-CRT path\\ninstead of writing out of bounds.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/crypto/intel/qat/qat_common/qat_asym_algs.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"879f77e9071f029e1c9bd5a75814ecf51370f846\",\"lessThan\":\"6d99c5fadd2df488103f64d6475b63ba6852202b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"879f77e9071f029e1c9bd5a75814ecf51370f846\",\"lessThan\":\"c34369473bfe92a0b46ec78d6358e30341c7f481\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"879f77e9071f029e1c9bd5a75814ecf51370f846\",\"lessThan\":\"1002719d13072a5e4be1e993aa61dffb4a604e82\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"879f77e9071f029e1c9bd5a75814ecf51370f846\",\"lessThan\":\"500319830d76911c120dc0b9605f8c16d7702844\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"879f77e9071f029e1c9bd5a75814ecf51370f846\",\"lessThan\":\"3d61a214fdcda41f1ebfabbb483404032a7b4d91\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"879f77e9071f029e1c9bd5a75814ecf51370f846\",\"lessThan\":\"6fb62b767f3e27661e8f8d2f7b85f4e098fcdb1a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"879f77e9071f029e1c9bd5a75814ecf51370f846\",\"lessThan\":\"ce42224487c504aee4b7ff3a7342e7b4d7e28cc9\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"879f77e9071f029e1c9bd5a75814ecf51370f846\",\"lessThan\":\"b3ac78756588059729b9195fcc9f4b37d54057a5\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/crypto/intel/qat/qat_common/qat_asym_algs.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"4.8\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"4.8\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.261\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.212\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.178\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.145\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.96\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.39\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.4\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2-rc1\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1002719d13072a5e4be1e993aa61dffb4a604e82\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3d61a214fdcda41f1ebfabbb483404032a7b4d91\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/500319830d76911c120dc0b9605f8c16d7702844\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6d99c5fadd2df488103f64d6475b63ba6852202b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6fb62b767f3e27661e8f8d2f7b85f4e098fcdb1a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b3ac78756588059729b9195fcc9f4b37d54057a5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c34369473bfe92a0b46ec78d6358e30341c7f481\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ce42224487c504aee4b7ff3a7342e7b4d7e28cc9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "suse_vex": {
      "aggregate_severity": "not set",
      "current_release_date": "2026-07-25T16:46:09Z",
      "cve": "CVE-2026-64304",
      "id": "CVE-2026-64304",
      "initial_release_date": "2026-07-25T16:46:09Z",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-64304",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-64304.json",
      "version": "2"
    }
  }
}

GHSA-63X3-XXQC-X6VR

Vulnerability from github – Published: 2026-07-25 12:31 – Updated: 2026-07-25 12:31

Details

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

crypto: qat - validate RSA CRT component lengths

The generic RSA key parser (rsa_helper.c) bounds each CRT component (p, q, dp, dq, qinv) by the modulus size n_sz, but qat_rsa_setkey_crt() allocates half-size DMA buffers (key_sz / 2) and right-aligns each component with:

memcpy(dst + half_key_sz - len, src, len)

When a CRT component is larger than half_key_sz the subtraction underflows and memcpy writes past the DMA buffer, causing memory corruption.

Add a len > half_key_sz check next to the existing !len check for each of the five CRT components so the driver falls back to the non-CRT path instead of writing out of bounds.

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-64304"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-25T10:17:11Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: qat - validate RSA CRT component lengths\n\nThe generic RSA key parser (rsa_helper.c) bounds each CRT component (p,\nq, dp, dq, qinv) by the modulus size n_sz, but qat_rsa_setkey_crt()\nallocates half-size DMA buffers (key_sz / 2) and right-aligns each\ncomponent with:\n\n    memcpy(dst + half_key_sz - len, src, len)\n\nWhen a CRT component is larger than half_key_sz the subtraction\nunderflows and memcpy writes past the DMA buffer, causing memory\ncorruption.\n\nAdd a len \u003e half_key_sz check next to the existing !len check for each\nof the five CRT components so the driver falls back to the non-CRT path\ninstead of writing out of bounds.",
  "id": "GHSA-63x3-xxqc-x6vr",
  "modified": "2026-07-25T12:31:30Z",
  "published": "2026-07-25T12:31:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64304"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1002719d13072a5e4be1e993aa61dffb4a604e82"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3d61a214fdcda41f1ebfabbb483404032a7b4d91"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/500319830d76911c120dc0b9605f8c16d7702844"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6d99c5fadd2df488103f64d6475b63ba6852202b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6fb62b767f3e27661e8f8d2f7b85f4e098fcdb1a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b3ac78756588059729b9195fcc9f4b37d54057a5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c34369473bfe92a0b46ec78d6358e30341c7f481"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ce42224487c504aee4b7ff3a7342e7b4d7e28cc9"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.

Action not permitted

CVE-2026-64304 (GCVE-0-2026-64304)

GHSA-63X3-XXQC-X6VR

Tags

Sightings

Nomenclature