Vulnerability-Lookup

GHSA-RJGV-C7P2-JJ9P

Vulnerability from github – Published: 2026-08-15 06:32 – Updated: 2026-08-15 06:32

Details

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

liveupdate: fix TOCTOU race in luo_session_retrieve()

Extend the scope of the rwsem_read lock in luo_session_retrieve() to overlap with the acquisition of the session mutex. This prevents a concurrent thread from releasing and freeing the session between the lookup and the mutex lock.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-74370"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-15T06:22:38Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nliveupdate: fix TOCTOU race in luo_session_retrieve()\n\nExtend the scope of the rwsem_read lock in luo_session_retrieve() to\noverlap with the acquisition of the session mutex. This prevents a\nconcurrent thread from releasing and freeing the session between the\nlookup and the mutex lock.",
  "id": "GHSA-rjgv-c7p2-jj9p",
  "modified": "2026-08-15T06:32:31Z",
  "published": "2026-08-15T06:32:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74370"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d3ae9e7fddb4036f50003d7fa1ef52801fdb961b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d944170607b872a1f93713c555ad3f0efde3a9b8"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-74370 (GCVE-0-2026-74370)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:58 – Updated: 2026-08-17 05:18

Title

liveupdate: fix TOCTOU race in luo_session_retrieve()

Summary

In the Linux kernel, the following vulnerability has been resolved: liveupdate: fix TOCTOU race in luo_session_retrieve() Extend the scope of the rwsem_read lock in luo_session_retrieve() to overlap with the acquisition of the session mutex. This prevents a concurrent thread from releasing and freeing the session between the lookup and the mutex lock.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

2 references

URL	Tags
https://git.kernel.org/stable/c/d944170607b872a1f…
https://git.kernel.org/stable/c/d3ae9e7fddb4036f5…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 0153094d03df5a2e834a19c59b255649a258ae46 , < d944170607b872a1f93713c555ad3f0efde3a9b8 (git) Affected: 0153094d03df5a2e834a19c59b255649a258ae46 , < d3ae9e7fddb4036f50003d7fa1ef52801fdb961b (git)
Linux	Linux	Affected: 6.19 Unaffected: 0 , < 6.19 (semver) Unaffected: 7.1.5 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/liveupdate/luo_session.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "d944170607b872a1f93713c555ad3f0efde3a9b8",
              "status": "affected",
              "version": "0153094d03df5a2e834a19c59b255649a258ae46",
              "versionType": "git"
            },
            {
              "lessThan": "d3ae9e7fddb4036f50003d7fa1ef52801fdb961b",
              "status": "affected",
              "version": "0153094d03df5a2e834a19c59b255649a258ae46",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "kernel/liveupdate/luo_session.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.19"
            },
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "7.1.5",
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            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.5",
                  "versionStartIncluding": "6.19",
                  "vulnerable": true
                },
                {
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                }
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              "operator": "OR"
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        }
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      "descriptions": [
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nliveupdate: fix TOCTOU race in luo_session_retrieve()\n\nExtend the scope of the rwsem_read lock in luo_session_retrieve() to\noverlap with the acquisition of the session mutex. This prevents a\nconcurrent thread from releasing and freeing the session between the\nlookup and the mutex lock."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T05:18:05.573Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/d944170607b872a1f93713c555ad3f0efde3a9b8"
        },
        {
          "url": "https://git.kernel.org/stable/c/d3ae9e7fddb4036f50003d7fa1ef52801fdb961b"
        }
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-74370",
    "datePublished": "2026-08-15T05:58:50.933Z",
    "dateReserved": "2026-08-15T05:44:03.888Z",
    "dateUpdated": "2026-08-17T05:18:05.573Z",
    "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.

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.
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.

Action not permitted

GHSA-RJGV-C7P2-JJ9P

CVE-2026-74370 (GCVE-0-2026-74370)

Tags

Sightings

Nomenclature