Vulnerability-Lookup

GHSA-CR35-G722-63Q3

Vulnerability from github – Published: 2025-09-11 18:35 – Updated: 2026-10-21 15:40

Details

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

crypto: x86/aegis - Add missing error checks

The skcipher_walk functions can allocate memory and can fail, so checking for errors is necessary.

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-2025-39789"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-11T17:15:45Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: x86/aegis - Add missing error checks\n\nThe skcipher_walk functions can allocate memory and can fail, so\nchecking for errors is necessary.",
  "id": "GHSA-cr35-g722-63q3",
  "modified": "2026-10-21T15:40:08Z",
  "published": "2025-09-11T18:35:52Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39789"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3d9eb180fbe8828cce43bce4c370124685b205c3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/475104178f4d30e749ee4f5473c87f692b93bebb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/74d3b91f1598eedf87a977702f9f55e32698206d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b4ba650125d21e937f82fcafcd2738fe31209c05"
    }
  ],
  "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-2025-39789 (GCVE-0-2025-39789)

Vulnerability from cvelistv5 – Published: 2025-09-11 16:56 – Updated: 2026-10-21 12:37

Title

crypto: x86/aegis - Add missing error checks

Summary

In the Linux kernel, the following vulnerability has been resolved: crypto: x86/aegis - Add missing error checks The skcipher_walk functions can allocate memory and can fail, so checking for errors is necessary.

Severity

7.3 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 7018 records in the last 180 days details

References

4 references

URL	Tags
https://git.kernel.org/stable/c/74d3b91f1598eedf8…
https://git.kernel.org/stable/c/b4ba650125d21e937…
https://git.kernel.org/stable/c/475104178f4d30e74…
https://git.kernel.org/stable/c/3d9eb180fbe8828cc…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 1d373d4e8e15b358f08de52956b32e0e38a11f84 , < 74d3b91f1598eedf87a977702f9f55e32698206d (git) Affected: 1d373d4e8e15b358f08de52956b32e0e38a11f84 , < b4ba650125d21e937f82fcafcd2738fe31209c05 (git) Affected: 1d373d4e8e15b358f08de52956b32e0e38a11f84 , < 475104178f4d30e749ee4f5473c87f692b93bebb (git) Affected: 1d373d4e8e15b358f08de52956b32e0e38a11f84 , < 3d9eb180fbe8828cce43bce4c370124685b205c3 (git)
Linux	Linux	Affected: 4.18 Unaffected: 0 , < 4.18 (semver) Unaffected: 6.6.160 , ≤ 6.6.* (semver) Unaffected: 6.12.114 , ≤ 6.12.* (semver) Unaffected: 6.16.4 , ≤ 6.16.* (semver) Unaffected: 6.17 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/x86/crypto/aegis128-aesni-glue.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "74d3b91f1598eedf87a977702f9f55e32698206d",
              "status": "affected",
              "version": "1d373d4e8e15b358f08de52956b32e0e38a11f84",
              "versionType": "git"
            },
            {
              "lessThan": "b4ba650125d21e937f82fcafcd2738fe31209c05",
              "status": "affected",
              "version": "1d373d4e8e15b358f08de52956b32e0e38a11f84",
              "versionType": "git"
            },
            {
              "lessThan": "475104178f4d30e749ee4f5473c87f692b93bebb",
              "status": "affected",
              "version": "1d373d4e8e15b358f08de52956b32e0e38a11f84",
              "versionType": "git"
            },
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              "status": "affected",
              "version": "1d373d4e8e15b358f08de52956b32e0e38a11f84",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "arch/x86/crypto/aegis128-aesni-glue.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.18"
            },
            {
              "lessThan": "4.18",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.160",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.114",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.16.*",
              "status": "unaffected",
              "version": "6.16.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.17",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.160",
                  "versionStartIncluding": "4.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.114",
                  "versionStartIncluding": "4.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.16.4",
                  "versionStartIncluding": "4.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17",
                  "versionStartIncluding": "4.18",
                  "vulnerable": true
                }
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              "negate": false,
              "operator": "OR"
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: x86/aegis - Add missing error checks\n\nThe skcipher_walk functions can allocate memory and can fail, so\nchecking for errors is necessary."
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      "metrics": [
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          "cvssV3_1": {
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            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L",
            "version": "3.1"
          },
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              "value": "AV:L - The AEGIS-128 AEAD is driven from the local crypto API \u2014 an unprivileged user reaches it directly via an AF_ALG/algif_aead socket, and in-kernel consumers (dm-crypt, xfrm ESP) are configured locally. A remote peer cannot itself supply input that reaches the failing allocation, so this is local.\nAC:L - The failure requires a memory allocation failure inside skcipher_walk, but the attacker can both force the allocating slow path on every walk step (by submitting scatterlists fragmented below the 16-byte chunksize) and induce the memory pressure, then retry the operation arbitrarily many times; the GFP_ATOMIC variant used by softirq consumers fails readily under attacker-generated load.\nPR:L - Binding an AF_ALG socket to \"aegis128\" and issuing encrypt requests requires only an unprivileged local account \u2014 no capability, and module autoload happens on the user\u0027s behalf.\nUI:N - The attacker triggers the encrypt/decrypt path entirely on their own; no victim action is needed.\nS:U - The faulty error handling and its consequences stay within the kernel\u0027s own security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - On the unchecked error path the encrypt call returns success without encrypting, so the \"ciphertext\" handed to the caller is the raw plaintext (in-place operations) or stale kernel buffer contents (out-of-place, e.g. dm-crypt/ESP buffers), disclosing data that was supposed to be protected to disk, network peers, or backups.\nI:H - The kernel reports a successful AEAD operation while producing unencrypted, partially encrypted, or stale output with a mismatched tag, so data written to encrypted storage or an encrypted tunnel is silently wrong and cannot be distinguished from valid output by the caller.\nA:L - No kernel crash, hang, or corruption occurs; the impact is that the silently bad ciphertext/tag causes downstream rejection \u2014 dropped IPsec packets, I/O errors on integrity-protected volumes, and unrecoverable stored blocks \u2014 which is a limited interruption rather than a full loss of availability."
            }
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-21T12:37:21.691Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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          "url": "https://git.kernel.org/stable/c/74d3b91f1598eedf87a977702f9f55e32698206d"
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          "url": "https://git.kernel.org/stable/c/b4ba650125d21e937f82fcafcd2738fe31209c05"
        },
        {
          "url": "https://git.kernel.org/stable/c/475104178f4d30e749ee4f5473c87f692b93bebb"
        },
        {
          "url": "https://git.kernel.org/stable/c/3d9eb180fbe8828cce43bce4c370124685b205c3"
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      ],
      "title": "crypto: x86/aegis - Add missing error checks",
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      }
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-39789",
    "datePublished": "2025-09-11T16:56:37.912Z",
    "dateReserved": "2025-04-16T07:20:57.131Z",
    "dateUpdated": "2026-10-21T12:37:21.691Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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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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.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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