Vulnerability-Lookup

CVE-2026-64314 (GCVE-0-2026-64314)

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

Title

crypto: chacha20poly1305 - validate poly1305 template argument

Summary

In the Linux kernel, the following vulnerability has been resolved: crypto: chacha20poly1305 - validate poly1305 template argument chachapoly_create() still accepts the compatibility poly1305 parameter in the template name, but it assumes the second template argument is always present and immediately passes it to strcmp(). When the argument is missing, crypto_attr_alg_name() returns an error pointer. Check for that before comparing the name so malformed template instantiations fail with an error instead of dereferencing the error pointer in strcmp(). This matches the surrounding Crypto API template pattern where crypto_attr_alg_name() results are validated before string-specific use.

Severity

No CVSS data available.

Assigner

Linux

References

3 references

URL	Tags
https://git.kernel.org/stable/c/0016d3c21c6ab60a2…
https://git.kernel.org/stable/c/e74df53b36cdc6b6b…
https://git.kernel.org/stable/c/265b861bece38318b…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: a298765e28adaea199f722142c10dae7e24dedf8 , < 0016d3c21c6ab60a20be7f565cefb5999f3adeb6 (git) Affected: a298765e28adaea199f722142c10dae7e24dedf8 , < e74df53b36cdc6b6b9e5488ec883d1d55624737f (git) Affected: a298765e28adaea199f722142c10dae7e24dedf8 , < 265b861bece38318b8e0fc8fac0643d4ef906d31 (git)
Linux	Linux	Affected: 6.16 Unaffected: 0 , < 6.16 (semver) Unaffected: 6.18.39 , ≤ 6.18.* (semver) Unaffected: 7.1.4 , ≤ 7.1.* (semver) Unaffected: 7.2-rc1 , ≤ * (original_commit_for_fix)

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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: chacha20poly1305 - validate poly1305 template argument\n\nchachapoly_create() still accepts the compatibility poly1305 parameter\nin the template name, but it assumes the second template argument is\nalways present and immediately passes it to strcmp().\n\nWhen the argument is missing, crypto_attr_alg_name() returns an error\npointer. Check for that before comparing the name so malformed template\ninstantiations fail with an error instead of dereferencing the error\npointer in strcmp().\n\nThis matches the surrounding Crypto API template pattern where\ncrypto_attr_alg_name() results are validated before string-specific use."
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    "datePublished": "2026-07-25T08:49:45.170Z",
    "dateReserved": "2026-07-19T15:36:31.779Z",
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    "redhat_vex": {
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      "cve": "CVE-2026-64314",
      "id": "CVE-2026-64314",
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      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: crypto: chacha20poly1305 - validate poly1305 template argument",
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      "cve": "CVE-2026-64314",
      "id": "CVE-2026-64314",
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      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-64314",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-64314.json",
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}

GHSA-8Q9P-R3G4-95MR

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: chacha20poly1305 - validate poly1305 template argument

chachapoly_create() still accepts the compatibility poly1305 parameter in the template name, but it assumes the second template argument is always present and immediately passes it to strcmp().

When the argument is missing, crypto_attr_alg_name() returns an error pointer. Check for that before comparing the name so malformed template instantiations fail with an error instead of dereferencing the error pointer in strcmp().

This matches the surrounding Crypto API template pattern where crypto_attr_alg_name() results are validated before string-specific use.

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-64314"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-25T10:17:12Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: chacha20poly1305 - validate poly1305 template argument\n\nchachapoly_create() still accepts the compatibility poly1305 parameter\nin the template name, but it assumes the second template argument is\nalways present and immediately passes it to strcmp().\n\nWhen the argument is missing, crypto_attr_alg_name() returns an error\npointer. Check for that before comparing the name so malformed template\ninstantiations fail with an error instead of dereferencing the error\npointer in strcmp().\n\nThis matches the surrounding Crypto API template pattern where\ncrypto_attr_alg_name() results are validated before string-specific use.",
  "id": "GHSA-8q9p-r3g4-95mr",
  "modified": "2026-07-25T12:31:31Z",
  "published": "2026-07-25T12:31:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64314"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0016d3c21c6ab60a20be7f565cefb5999f3adeb6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/265b861bece38318b8e0fc8fac0643d4ef906d31"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e74df53b36cdc6b6b9e5488ec883d1d55624737f"
    }
  ],
  "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.

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CVE-2026-64314 (GCVE-0-2026-64314)

GHSA-8Q9P-R3G4-95MR

Tags

Sightings

Nomenclature