Vulnerability-Lookup

GHSA-V5V4-GVC3-Q8X8

Vulnerability from github – Published: 2026-04-30 12:33 – Updated: 2026-05-03 09:33

Details

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

cifs: some missing initializations on replay

In several places in the code, we have a label to signify the start of the code where a request can be replayed if necessary. However, some of these places were missing the necessary reinitializations of certain local variables before replay.

This change makes sure that these variables get initialized after the label.

Severity ?

7.8 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-31693"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-908"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-30T12:16:24Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: some missing initializations on replay\n\nIn several places in the code, we have a label to signify\nthe start of the code where a request can be replayed if\nnecessary. However, some of these places were missing the\nnecessary reinitializations of certain local variables\nbefore replay.\n\nThis change makes sure that these variables get initialized\nafter the label.",
  "id": "GHSA-v5v4-gvc3-q8x8",
  "modified": "2026-05-03T09:33:09Z",
  "published": "2026-04-30T12:33:12Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31693"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/14f66f44646333d2bfd7ece36585874fd72f8286"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1d731e512134495e0ef490ade0e4d91dc0d515ec"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7c9ce68192eef14c777cb6ce17155d2eb2431aea"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c854ab481ece4b3e5f4c2e8b22824f015ff874a5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c99e160938b627f6f28edee930e8abc157e84386"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-31693 (GCVE-0-2026-31693)

Vulnerability from cvelistv5 – Published: 2026-04-30 11:47 – Updated: 2026-05-03 05:45

Title

cifs: some missing initializations on replay

Summary

In the Linux kernel, the following vulnerability has been resolved: cifs: some missing initializations on replay In several places in the code, we have a label to signify the start of the code where a request can be replayed if necessary. However, some of these places were missing the necessary reinitializations of certain local variables before replay. This change makes sure that these variables get initialized after the label.

Severity ?

7.8 (High)


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

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/c854ab481ece4b3e5…
	https://git.kernel.org/stable/c/1d731e512134495e0…
	https://git.kernel.org/stable/c/7c9ce68192eef14c7…
	https://git.kernel.org/stable/c/c99e160938b627f6f…
	https://git.kernel.org/stable/c/14f66f44646333d2b…

Impacted products

Vendor

Product

Version

Linux

Affected: 433042a91f9373241307725b52de573933ffedbf , < c854ab481ece4b3e5f4c2e8b22824f015ff874a5 (git)
Affected: 4f1fffa2376922f3d1d506e49c0fd445b023a28e , < 1d731e512134495e0ef490ade0e4d91dc0d515ec (git)
Affected: 4f1fffa2376922f3d1d506e49c0fd445b023a28e , < 7c9ce68192eef14c777cb6ce17155d2eb2431aea (git)
Affected: 4f1fffa2376922f3d1d506e49c0fd445b023a28e , < c99e160938b627f6f28edee930e8abc157e84386 (git)
Affected: 4f1fffa2376922f3d1d506e49c0fd445b023a28e , < 14f66f44646333d2bfd7ece36585874fd72f8286 (git)

Linux

Affected: 6.8
Unaffected: 0 , < 6.8 (semver)
Unaffected: 6.6.128 , ≤ 6.6.* (semver)
Unaffected: 6.12.75 , ≤ 6.12.* (semver)
Unaffected: 6.18.16 , ≤ 6.18.* (semver)
Unaffected: 6.19.6 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/smb/client/smb2ops.c",
            "fs/smb/client/smb2pdu.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "c854ab481ece4b3e5f4c2e8b22824f015ff874a5",
              "status": "affected",
              "version": "433042a91f9373241307725b52de573933ffedbf",
              "versionType": "git"
            },
            {
              "lessThan": "1d731e512134495e0ef490ade0e4d91dc0d515ec",
              "status": "affected",
              "version": "4f1fffa2376922f3d1d506e49c0fd445b023a28e",
              "versionType": "git"
            },
            {
              "lessThan": "7c9ce68192eef14c777cb6ce17155d2eb2431aea",
              "status": "affected",
              "version": "4f1fffa2376922f3d1d506e49c0fd445b023a28e",
              "versionType": "git"
            },
            {
              "lessThan": "c99e160938b627f6f28edee930e8abc157e84386",
              "status": "affected",
              "version": "4f1fffa2376922f3d1d506e49c0fd445b023a28e",
              "versionType": "git"
            },
            {
              "lessThan": "14f66f44646333d2bfd7ece36585874fd72f8286",
              "status": "affected",
              "version": "4f1fffa2376922f3d1d506e49c0fd445b023a28e",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/smb/client/smb2ops.c",
            "fs/smb/client/smb2pdu.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.8"
            },
            {
              "lessThan": "6.8",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.128",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.75",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.16",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.128",
                  "versionStartIncluding": "6.6.32",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.75",
                  "versionStartIncluding": "6.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.16",
                  "versionStartIncluding": "6.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.6",
                  "versionStartIncluding": "6.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0",
                  "versionStartIncluding": "6.8",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: some missing initializations on replay\n\nIn several places in the code, we have a label to signify\nthe start of the code where a request can be replayed if\nnecessary. However, some of these places were missing the\nnecessary reinitializations of certain local variables\nbefore replay.\n\nThis change makes sure that these variables get initialized\nafter the label."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-03T05:45:18.654Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/c854ab481ece4b3e5f4c2e8b22824f015ff874a5"
        },
        {
          "url": "https://git.kernel.org/stable/c/1d731e512134495e0ef490ade0e4d91dc0d515ec"
        },
        {
          "url": "https://git.kernel.org/stable/c/7c9ce68192eef14c777cb6ce17155d2eb2431aea"
        },
        {
          "url": "https://git.kernel.org/stable/c/c99e160938b627f6f28edee930e8abc157e84386"
        },
        {
          "url": "https://git.kernel.org/stable/c/14f66f44646333d2bfd7ece36585874fd72f8286"
        }
      ],
      "title": "cifs: some missing initializations on replay",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-31693",
    "datePublished": "2026-04-30T11:47:01.230Z",
    "dateReserved": "2026-03-09T15:48:24.131Z",
    "dateUpdated": "2026-05-03T05:45:18.654Z",
    "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.

Action not permitted

GHSA-V5V4-GVC3-Q8X8

CVE-2026-31693 (GCVE-0-2026-31693)

Tags

Sightings

Nomenclature