Vulnerability-Lookup

GHSA-WM77-G5XW-58C7

Vulnerability from github – Published: 2026-02-04 18:30 – Updated: 2026-02-06 18:30

Details

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

ksmbd: smbd: fix dma_unmap_sg() nents

The dma_unmap_sg() functions should be called with the same nents as the dma_map_sg(), not the value the map function returned.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-23093"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-02-04T17:16:20Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: smbd: fix dma_unmap_sg() nents\n\nThe dma_unmap_sg() functions should be called with the same nents as the\ndma_map_sg(), not the value the map function returned.",
  "id": "GHSA-wm77-g5xw-58c7",
  "modified": "2026-02-06T18:30:31Z",
  "published": "2026-02-04T18:30:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23093"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4d1e9a4a450aae47277763562122cc80ed703ab2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6ececffd3e9fe93a87738625dc0671165d27bf96"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/70ba85e439221a5d6dda34a3004db6640f0525e6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/98e3e2b561bc88f4dd218d1c05890672874692f6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d1943bc9dc9508f5933788a76f8a35d10e43a646"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f569f5b8bfd5133defdf9c7f8a72c63aa11f54ec"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-23093 (GCVE-0-2026-23093)

Vulnerability from cvelistv5 – Published: 2026-02-04 16:08 – Updated: 2026-02-06 16:33

Title

ksmbd: smbd: fix dma_unmap_sg() nents

Summary

In the Linux kernel, the following vulnerability has been resolved: ksmbd: smbd: fix dma_unmap_sg() nents The dma_unmap_sg() functions should be called with the same nents as the dma_map_sg(), not the value the map function returned.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/f569f5b8bfd5133de…
	https://git.kernel.org/stable/c/6ececffd3e9fe93a8…
	https://git.kernel.org/stable/c/4d1e9a4a450aae472…
	https://git.kernel.org/stable/c/70ba85e439221a5d6…
	https://git.kernel.org/stable/c/d1943bc9dc9508f59…
	https://git.kernel.org/stable/c/98e3e2b561bc88f4d…

Impacted products

Vendor

Product

Version

Linux

Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < f569f5b8bfd5133defdf9c7f8a72c63aa11f54ec (git)
Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < 6ececffd3e9fe93a87738625dc0671165d27bf96 (git)
Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < 4d1e9a4a450aae47277763562122cc80ed703ab2 (git)
Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < 70ba85e439221a5d6dda34a3004db6640f0525e6 (git)
Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < d1943bc9dc9508f5933788a76f8a35d10e43a646 (git)
Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < 98e3e2b561bc88f4dd218d1c05890672874692f6 (git)

Linux

Affected: 5.15
Unaffected: 0 , < 5.15 (semver)
Unaffected: 5.15.199 , ≤ 5.15.* (semver)
Unaffected: 6.1.162 , ≤ 6.1.* (semver)
Unaffected: 6.6.123 , ≤ 6.6.* (semver)
Unaffected: 6.12.69 , ≤ 6.12.* (semver)
Unaffected: 6.18.8 , ≤ 6.18.* (semver)
Unaffected: 6.19-rc7 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/smb/server/transport_rdma.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "f569f5b8bfd5133defdf9c7f8a72c63aa11f54ec",
              "status": "affected",
              "version": "0626e6641f6b467447c81dd7678a69c66f7746cf",
              "versionType": "git"
            },
            {
              "lessThan": "6ececffd3e9fe93a87738625dc0671165d27bf96",
              "status": "affected",
              "version": "0626e6641f6b467447c81dd7678a69c66f7746cf",
              "versionType": "git"
            },
            {
              "lessThan": "4d1e9a4a450aae47277763562122cc80ed703ab2",
              "status": "affected",
              "version": "0626e6641f6b467447c81dd7678a69c66f7746cf",
              "versionType": "git"
            },
            {
              "lessThan": "70ba85e439221a5d6dda34a3004db6640f0525e6",
              "status": "affected",
              "version": "0626e6641f6b467447c81dd7678a69c66f7746cf",
              "versionType": "git"
            },
            {
              "lessThan": "d1943bc9dc9508f5933788a76f8a35d10e43a646",
              "status": "affected",
              "version": "0626e6641f6b467447c81dd7678a69c66f7746cf",
              "versionType": "git"
            },
            {
              "lessThan": "98e3e2b561bc88f4dd218d1c05890672874692f6",
              "status": "affected",
              "version": "0626e6641f6b467447c81dd7678a69c66f7746cf",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/smb/server/transport_rdma.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.15"
            },
            {
              "lessThan": "5.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.199",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.162",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.123",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.69",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19-rc7",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.199",
                  "versionStartIncluding": "5.15",
                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "6.1.162",
                  "versionStartIncluding": "5.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.69",
                  "versionStartIncluding": "5.15",
                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "6.18.8",
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                },
                {
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                  "versionEndExcluding": "6.19-rc7",
                  "versionStartIncluding": "5.15",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: smbd: fix dma_unmap_sg() nents\n\nThe dma_unmap_sg() functions should be called with the same nents as the\ndma_map_sg(), not the value the map function returned."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-06T16:33:14.557Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/f569f5b8bfd5133defdf9c7f8a72c63aa11f54ec"
        },
        {
          "url": "https://git.kernel.org/stable/c/6ececffd3e9fe93a87738625dc0671165d27bf96"
        },
        {
          "url": "https://git.kernel.org/stable/c/4d1e9a4a450aae47277763562122cc80ed703ab2"
        },
        {
          "url": "https://git.kernel.org/stable/c/70ba85e439221a5d6dda34a3004db6640f0525e6"
        },
        {
          "url": "https://git.kernel.org/stable/c/d1943bc9dc9508f5933788a76f8a35d10e43a646"
        },
        {
          "url": "https://git.kernel.org/stable/c/98e3e2b561bc88f4dd218d1c05890672874692f6"
        }
      ],
      "title": "ksmbd: smbd: fix dma_unmap_sg() nents",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-23093",
    "datePublished": "2026-02-04T16:08:16.159Z",
    "dateReserved": "2026-01-13T15:37:45.962Z",
    "dateUpdated": "2026-02-06T16:33:14.557Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

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-WM77-G5XW-58C7

CVE-2026-23093 (GCVE-0-2026-23093)

Tags

Sightings

Nomenclature