Vulnerability-Lookup

FKIE_CVE-2023-52646

Vulnerability from fkie_nvd - Published: 2024-04-26 13:15 - Updated: 2026-06-17 06:43

Severity

5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: aio: fix mremap after fork null-deref Commit e4a0d3e720e7 ("aio: Make it possible to remap aio ring") introduced a null-deref if mremap is called on an old aio mapping after fork as mm->ioctx_table will be set to NULL. [jmoyer@redhat.com: fix 80 column issue]

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/178993157e8c50aef7f35d7d6d3b44bb428199e1	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/4326d0080f7e84fba775da41d158f46cf9d3f1c2	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/808f1e4b5723ae4eda724d2ad6f6638905eefd95	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/81e9d6f8647650a7bead74c5f926e29970e834d1	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/af126acf01a12bdb04986fd26fc2eb3b40249e0d	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/c261f798f7baa8080cf0214081d43d5f86bb073f	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d8dca1bfe9adcae38b35add64977818c0c13dd22	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/178993157e8c50aef7f35d7d6d3b44bb428199e1	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/4326d0080f7e84fba775da41d158f46cf9d3f1c2	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/808f1e4b5723ae4eda724d2ad6f6638905eefd95	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/81e9d6f8647650a7bead74c5f926e29970e834d1	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/af126acf01a12bdb04986fd26fc2eb3b40249e0d	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/c261f798f7baa8080cf0214081d43d5f86bb073f	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/d8dca1bfe9adcae38b35add64977818c0c13dd22	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	6.2
linux	linux_kernel	6.2
linux	linux_kernel	6.2
linux	linux_kernel	6.2
linux	linux_kernel	6.2
linux	linux_kernel	6.2
linux	linux_kernel	6.2
linux	linux_kernel	6.2

JSON

To clipboard

{
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          "programFiles": [
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\naio: fix mremap after fork null-deref\n\nCommit e4a0d3e720e7 (\"aio: Make it possible to remap aio ring\") introduced\na null-deref if mremap is called on an old aio mapping after fork as\nmm-\u003eioctx_table will be set to NULL.\n\n[jmoyer@redhat.com: fix 80 column issue]"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: aio: corrige mremap despu\u00e9s de la bifurcaci\u00f3n null-deref Commit e4a0d3e720e7 (\"aio: Make it posible reasignar el anillo aio\") introdujo un null-deref si se llama a mremap en un mapeo aio antiguo despu\u00e9s de la bifurcaci\u00f3n como mm-\u0026gt;ioctx_table se establecer\u00e1 en NULL. [jmoyer@redhat.com: soluciona el problema de 80 columnas]"
    }
  ],
  "id": "CVE-2023-52646",
  "lastModified": "2026-06-17T06:43:15.010",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
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          "role": "CISA Coordinator",
          "timestamp": "2024-07-17T14:11:42.942960Z",
          "version": "2.0.3"
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  "published": "2024-04-26T13:15:46.453",
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}

CVE-2023-52646 (GCVE-0-2023-52646)

Vulnerability from cvelistv5 – Published: 2024-04-26 12:19 – Updated: 2026-05-11 19:30

Title

aio: fix mremap after fork null-deref

Summary

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-07-17 14:11 UTC

Assigner

Linux CNA under the mitre root

CNA scorecard D 54/100 over 6618 records in the last 180 days details

References

7 references

URL	Tags
https://git.kernel.org/stable/c/808f1e4b5723ae4ed…
https://git.kernel.org/stable/c/d8dca1bfe9adcae38…
https://git.kernel.org/stable/c/4326d0080f7e84fba…
https://git.kernel.org/stable/c/c261f798f7baa8080…
https://git.kernel.org/stable/c/178993157e8c50aef…
https://git.kernel.org/stable/c/af126acf01a12bdb0…
https://git.kernel.org/stable/c/81e9d6f8647650a7b…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: e4a0d3e720e7e508749c1439b5ba3aff56c92976 , < 808f1e4b5723ae4eda724d2ad6f6638905eefd95 (git) Affected: e4a0d3e720e7e508749c1439b5ba3aff56c92976 , < d8dca1bfe9adcae38b35add64977818c0c13dd22 (git) Affected: e4a0d3e720e7e508749c1439b5ba3aff56c92976 , < 4326d0080f7e84fba775da41d158f46cf9d3f1c2 (git) Affected: e4a0d3e720e7e508749c1439b5ba3aff56c92976 , < c261f798f7baa8080cf0214081d43d5f86bb073f (git) Affected: e4a0d3e720e7e508749c1439b5ba3aff56c92976 , < 178993157e8c50aef7f35d7d6d3b44bb428199e1 (git) Affected: e4a0d3e720e7e508749c1439b5ba3aff56c92976 , < af126acf01a12bdb04986fd26fc2eb3b40249e0d (git) Affected: e4a0d3e720e7e508749c1439b5ba3aff56c92976 , < 81e9d6f8647650a7bead74c5f926e29970e834d1 (git)
Linux	Linux	Affected: 3.19 Unaffected: 0 , < 3.19 (semver) Unaffected: 4.14.306 , ≤ 4.14.* (semver) Unaffected: 4.19.273 , ≤ 4.19.* (semver) Unaffected: 5.4.232 , ≤ 5.4.* (semver) Unaffected: 5.10.169 , ≤ 5.10.* (semver) Unaffected: 5.15.95 , ≤ 5.15.* (semver) Unaffected: 6.1.13 , ≤ 6.1.* (semver) Unaffected: 6.2 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2023-52646",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-07-17T14:11:42.942960Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-07-17T14:11:56.678Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T23:03:21.281Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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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.

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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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FKIE_CVE-2023-52646

CVE-2023-52646 (GCVE-0-2023-52646)

Tags

Sightings

Nomenclature

Related by attack behaviour