CVE-2026-64312 (GCVE-0-2026-64312)

Vulnerability from cvelistv5 – Published: 2026-07-25 08:49 – Updated: 2026-07-27 04:59
VLAI
Title
crypto: pcrypt - restore callback for non-parallel fallback
Summary
In the Linux kernel, the following vulnerability has been resolved: crypto: pcrypt - restore callback for non-parallel fallback pcrypt installs pcrypt_aead_done() on the child AEAD request before trying to submit it through padata. If padata_do_parallel() returns -EBUSY, pcrypt falls back to calling the child AEAD directly. That fallback must not keep the padata completion callback. Otherwise an asynchronous completion runs pcrypt_aead_done() even though the request was never enrolled in padata. Restore the original request callback and callback data before calling the child AEAD directly. This keeps the fallback path aligned with a direct AEAD request while leaving the parallel path unchanged.
Assigner
Impacted products
Vendor Product Version
Linux Linux Affected: a92ccd3618e42333ac6f150ecdac14dca298bc7a , < 81ce16d938db9b88cdc231522c0358395ae8c6b5 (git)
Affected: 96001f52ae8c70e2c736d3e1e5dc53d5b521e5ca , < 3920c5f6edc341729d20d0507e466c6d3b11f372 (git)
Affected: 92834692a539b5b7f409e467a14667d64713b732 , < ae93c5b3e2a2968b56d772ca1d06615927b7cc36 (git)
Affected: 5edae7a9a35606017ee6e05911c290acee9fee5a , < 82789a44415e3e31168229421b138278dfb16412 (git)
Affected: 7ddab756f2de5b7b43c122ebebdf37f400fb2b6f , < 4711ca06bd169a2cbc9cc59a6de2ed512c41a880 (git)
Affected: 662f2f13e66d3883b9238b0b96b17886179e60e2 , < c4bd2f4c35b0e15b6040c2f7e7e7986780c066cf (git)
Affected: 662f2f13e66d3883b9238b0b96b17886179e60e2 , < 83fa1397d5853de1e27dd52ec44b068ff358ca18 (git)
Affected: 662f2f13e66d3883b9238b0b96b17886179e60e2 , < ed459fe319376e876de433d12b6c6772e612ca36 (git)
Affected: dd8bf8eb5beba1e7c3b11a9a5a58ccbf345a69e6 (git)
Affected: fca8aed12218f96b38e374ff264d78ea1fbd23cc (git)
Affected: a8e0074ffb38c9a5964a221bb998034d016c93a2 (git)
Affected: 5.10.231 , < 5.10.261 (semver)
Affected: 5.15.174 , < 5.15.212 (semver)
Affected: 6.1.120 , < 6.1.178 (semver)
Affected: 6.6.64 , < 6.6.145 (semver)
Affected: 6.12.2 , < 6.12.96 (semver)
Affected: 4.19.325 , < 4.20 (semver)
Affected: 5.4.287 , < 5.5 (semver)
Affected: 6.11.11 , < 6.12 (semver)
Create a notification for this product.
Linux Linux Affected: 6.13
Unaffected: 0 , < 6.13 (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)
Create a notification for this product.
Show details on NVD website

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      "product_status:under_investigation": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "crypto: pcrypt - restore callback for non-parallel fallback",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-64312.json",
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This keeps the fallback path aligned with a\\ndirect AEAD request while leaving the parallel path unchanged.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"crypto/pcrypt.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"a92ccd3618e42333ac6f150ecdac14dca298bc7a\",\"lessThan\":\"81ce16d938db9b88cdc231522c0358395ae8c6b5\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"96001f52ae8c70e2c736d3e1e5dc53d5b521e5ca\",\"lessThan\":\"3920c5f6edc341729d20d0507e466c6d3b11f372\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"92834692a539b5b7f409e467a14667d64713b732\",\"lessThan\":\"ae93c5b3e2a2968b56d772ca1d06615927b7cc36\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"5edae7a9a35606017ee6e05911c290acee9fee5a\",\"lessThan\":\"82789a44415e3e31168229421b138278dfb16412\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"7ddab756f2de5b7b43c122ebebdf37f400fb2b6f\",\"lessThan\":\"4711ca06bd169a2cbc9cc59a6de2ed512c41a880\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"662f2f13e66d3883b9238b0b96b17886179e60e2\",\"lessThan\":\"c4bd2f4c35b0e15b6040c2f7e7e7986780c066cf\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"662f2f13e66d3883b9238b0b96b17886179e60e2\",\"lessThan\":\"83fa1397d5853de1e27dd52ec44b068ff358ca18\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"662f2f13e66d3883b9238b0b96b17886179e60e2\",\"lessThan\":\"ed459fe319376e876de433d12b6c6772e612ca36\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"dd8bf8eb5beba1e7c3b11a9a5a58ccbf345a69e6\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"fca8aed12218f96b38e374ff264d78ea1fbd23cc\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"a8e0074ffb38c9a5964a221bb998034d016c93a2\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"5.10.231\",\"lessThan\":\"5.10.261\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"5.15.174\",\"lessThan\":\"5.15.212\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"6.1.120\",\"lessThan\":\"6.1.178\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"6.6.64\",\"lessThan\":\"6.6.145\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"6.12.2\",\"lessThan\":\"6.12.96\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"4.19.325\",\"lessThan\":\"4.20\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"5.4.287\",\"lessThan\":\"5.5\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"6.11.11\",\"lessThan\":\"6.12\",\"versionType\":\"semver\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"crypto/pcrypt.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.13\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.13\",\"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\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}]},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/3920c5f6edc341729d20d0507e466c6d3b11f372\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/4711ca06bd169a2cbc9cc59a6de2ed512c41a880\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/81ce16d938db9b88cdc231522c0358395ae8c6b5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git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    "suse_vex": {
      "aggregate_severity": "not set",
      "current_release_date": "2026-07-25T16:45:58Z",
      "cve": "CVE-2026-64312",
      "id": "CVE-2026-64312",
      "initial_release_date": "2026-07-25T16:45:58Z",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-64312",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-64312.json",
      "version": "2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.

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Detection rules are retrieved from Rulezet.

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