CVE-2026-31431 (GCVE-0-2026-31431)

Vulnerability from cvelistv5 – Published: 2026-04-22 08:15 – Updated: 2026-05-05 00:30
VLAI? CISA KEV CIRCL
Title
crypto: algif_aead - Revert to operating out-of-place
Summary
In the Linux kernel, the following vulnerability has been resolved: crypto: algif_aead - Revert to operating out-of-place This mostly reverts commit 72548b093ee3 except for the copying of the associated data. There is no benefit in operating in-place in algif_aead since the source and destination come from different mappings. Get rid of all the complexity added for in-place operation and just copy the AD directly.
Severity ?
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-669 - Incorrect Resource Transfer Between Spheres
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 72548b093ee38a6d4f2a19e6ef1948ae05c181f7 , < 893d22e0135fa394db81df88697fba6032747667 (git)
Affected: 72548b093ee38a6d4f2a19e6ef1948ae05c181f7 , < 19d43105a97be0810edbda875f2cd03f30dc130c (git)
Affected: 72548b093ee38a6d4f2a19e6ef1948ae05c181f7 , < 961cfa271a918ad4ae452420e7c303149002875b (git)
Affected: 72548b093ee38a6d4f2a19e6ef1948ae05c181f7 , < 3115af9644c342b356f3f07a4dd1c8905cd9a6fc (git)
Affected: 72548b093ee38a6d4f2a19e6ef1948ae05c181f7 , < 8b88d99341f139e23bdeb1027a2a3ae10d341d82 (git)
Affected: 72548b093ee38a6d4f2a19e6ef1948ae05c181f7 , < fafe0fa2995a0f7073c1c358d7d3145bcc9aedd8 (git)
Affected: 72548b093ee38a6d4f2a19e6ef1948ae05c181f7 , < ce42ee423e58dffa5ec03524054c9d8bfd4f6237 (git)
Affected: 72548b093ee38a6d4f2a19e6ef1948ae05c181f7 , < a664bf3d603dc3bdcf9ae47cc21e0daec706d7a5 (git)
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    Linux Linux Affected: 4.14
Unaffected: 0 , < 4.14 (semver)
Unaffected: 5.10.254 , ≤ 5.10.* (semver)
Unaffected: 5.15.204 , ≤ 5.15.* (semver)
Unaffected: 6.1.170 , ≤ 6.1.* (semver)
Unaffected: 6.6.137 , ≤ 6.6.* (semver)
Unaffected: 6.12.85 , ≤ 6.12.* (semver)
Unaffected: 6.18.22 , ≤ 6.18.* (semver)
Unaffected: 6.19.12 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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CISA KEV
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: ff00c791-06de-48b9-8f44-1f3913c1dae2

Vulnerability ID: CVE-2026-31431

Status: Confirmed

Status Updated: 2026-05-01 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2026-05-01
Asserted: 2026-05-01
Scope
Notes: KEV entry: Linux Kernel Incorrect Resource Transfer Between Spheres Vulnerability | Affected: Linux / Kernel | Description: Linux Kernel contains an incorrect resource transfer between spheres vulnerability that could allow for privilege escalation. | Required action: "Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. | Due date: 2026-05-15 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://lore.kernel.org/linux-cve-announce/2026042214-CVE-2026-31431-3d65@gregkh/; https://xint.io/blog/copy-fail-linux-distributions#the-fix-6 ; https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/about/ ; https://nvd.nist.gov/vuln/detail/CVE-2026-31431
Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details
Cwes CWE-699
Feed CISA Known Exploited Vulnerabilities Catalog
Product Kernel
Due Date 2026-05-15
Date Added 2026-05-01
Vendorproject Linux
Vulnerabilityname Linux Kernel Incorrect Resource Transfer Between Spheres Vulnerability
Knownransomwarecampaignuse Unknown
References
Created: 2026-05-01 19:00 UTC | Updated: 2026-05-01 19:00 UTC
CIRCL
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 3e01e7d3-c2be-4035-865c-115c5aef1b92

Vulnerability ID: CVE-2026-31431

Status: Confirmed

Status Updated: 2026-05-04 07:19 UTC

Exploited: Yes

Alternative IDs:
[]

Characteristics
Remote Code Execution: No
Authentication Required: Yes
Local Access Required: Yes
Timestamps
First Seen: 2026-05-02
Asserted: 2026-05-04
Last Seen: 2026-05-04
Evidence

Type: Incident Response

Signal: Successful Exploitation

Source: Host logs

Details
Note Seen exploited on a system giving shell access to users.
Created: 2026-05-04 07:19 UTC | Updated: 2026-05-04 07:19 UTC
Show details on NVD website
To clipboard 

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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-31431",
    "datePublished": "2026-04-22T08:15:10.123Z",
    "dateReserved": "2026-03-09T15:48:24.089Z",
    "dateUpdated": "2026-05-05T00:30:43.498Z",
    "state": "PUBLISHED"
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      "cwes": "[\"CWE-699\"]",
      "dateAdded": "2026-05-01",
      "dueDate": "2026-05-15",
      "knownRansomwareCampaignUse": "Unknown",
      "notes": "https://lore.kernel.org/linux-cve-announce/2026042214-CVE-2026-31431-3d65@gregkh/; https://xint.io/blog/copy-fail-linux-distributions#the-fix-6 ; https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/about/ ; https://nvd.nist.gov/vuln/detail/CVE-2026-31431",
      "product": "Kernel",
      "requiredAction": "\"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.",
      "shortDescription": "Linux Kernel contains an incorrect resource transfer between spheres vulnerability that could allow for privilege escalation.",
      "vendorProject": "Linux",
      "vulnerabilityName": "Linux Kernel Incorrect Resource Transfer Between Spheres Vulnerability"
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Get rid of\\nall the complexity added for in-place operation and just copy the\\nAD directly.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.254\", \"versionStartIncluding\": \"4.14\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.204\", \"versionStartIncluding\": \"4.14\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.170\", \"versionStartIncluding\": \"4.14\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.137\", \"versionStartIncluding\": \"4.14\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12.85\", \"versionStartIncluding\": \"4.14\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.18.22\", \"versionStartIncluding\": \"4.14\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.19.12\", \"versionStartIncluding\": \"4.14\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"7.0\", \"versionStartIncluding\": \"4.14\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-04-30T09:32:06.731Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-31431\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-03T22:14:19.158Z\", \"dateReserved\": \"2026-03-09T15:48:24.089Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2026-04-22T08:15:10.123Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Tags
Taxonomy of the tags.




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.



Detection rules are retrieved from Rulezet.