Vulnerability-Lookup

GHSA-5RF8-F7C5-4XMW

Vulnerability from github – Published: 2026-04-03 15:30 – Updated: 2026-04-03 15:30

Details

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

drm/xe/configfs: Free ctx_restore_mid_bb in release

ctx_restore_mid_bb memory is allocated in wa_bb_store(), but xe_config_device_release() only frees ctx_restore_post_bb.

Free ctx_restore_mid_bb[0].cs as well to avoid leaking the allocation when the configfs device is removed.

(cherry picked from commit a235e7d0098337c3f2d1e8f3610c719a589e115f)

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{
  "affected": [],
  "aliases": [
    "CVE-2026-23421"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-03T14:16:28Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe/configfs: Free ctx_restore_mid_bb in release\n\nctx_restore_mid_bb memory is allocated in wa_bb_store(), but\nxe_config_device_release() only frees ctx_restore_post_bb.\n\nFree ctx_restore_mid_bb[0].cs as well to avoid leaking the allocation\nwhen the configfs device is removed.\n\n(cherry picked from commit a235e7d0098337c3f2d1e8f3610c719a589e115f)",
  "id": "GHSA-5rf8-f7c5-4xmw",
  "modified": "2026-04-03T15:30:31Z",
  "published": "2026-04-03T15:30:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23421"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3557359ea3df32430ea7c30f7a708ca9a91d7e0e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7f971dfd48983074adc7bbcea3ee95ce7aad47cb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e377182f0266f46f02d01838e6bde67b9dac0d66"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-23421 (GCVE-0-2026-23421)

Vulnerability from cvelistv5 – Published: 2026-04-03 13:24 – Updated: 2026-04-03 13:24

Title

drm/xe/configfs: Free ctx_restore_mid_bb in release

Summary

In the Linux kernel, the following vulnerability has been resolved: drm/xe/configfs: Free ctx_restore_mid_bb in release ctx_restore_mid_bb memory is allocated in wa_bb_store(), but xe_config_device_release() only frees ctx_restore_post_bb. Free ctx_restore_mid_bb[0].cs as well to avoid leaking the allocation when the configfs device is removed. (cherry picked from commit a235e7d0098337c3f2d1e8f3610c719a589e115f)

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/7f971dfd48983074a…
	https://git.kernel.org/stable/c/3557359ea3df32430…
	https://git.kernel.org/stable/c/e377182f0266f46f0…

Impacted products

Vendor

Product

Version

Linux

Affected: b30d5de3d40c3fa642079bac0d91f17091c5f877 , < 7f971dfd48983074adc7bbcea3ee95ce7aad47cb (git)
Affected: b30d5de3d40c3fa642079bac0d91f17091c5f877 , < 3557359ea3df32430ea7c30f7a708ca9a91d7e0e (git)
Affected: b30d5de3d40c3fa642079bac0d91f17091c5f877 , < e377182f0266f46f02d01838e6bde67b9dac0d66 (git)

Linux

Affected: 6.18
Unaffected: 0 , < 6.18 (semver)
Unaffected: 6.18.17 , ≤ 6.18.* (semver)
Unaffected: 6.19.7 , ≤ 6.19.* (semver)
Unaffected: 7.0-rc3 , ≤ * (original_commit_for_fix)

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JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/xe/xe_configfs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "7f971dfd48983074adc7bbcea3ee95ce7aad47cb",
              "status": "affected",
              "version": "b30d5de3d40c3fa642079bac0d91f17091c5f877",
              "versionType": "git"
            },
            {
              "lessThan": "3557359ea3df32430ea7c30f7a708ca9a91d7e0e",
              "status": "affected",
              "version": "b30d5de3d40c3fa642079bac0d91f17091c5f877",
              "versionType": "git"
            },
            {
              "lessThan": "e377182f0266f46f02d01838e6bde67b9dac0d66",
              "status": "affected",
              "version": "b30d5de3d40c3fa642079bac0d91f17091c5f877",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/xe/xe_configfs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.18"
            },
            {
              "lessThan": "6.18",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.17",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0-rc3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.17",
                  "versionStartIncluding": "6.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.7",
                  "versionStartIncluding": "6.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0-rc3",
                  "versionStartIncluding": "6.18",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe/configfs: Free ctx_restore_mid_bb in release\n\nctx_restore_mid_bb memory is allocated in wa_bb_store(), but\nxe_config_device_release() only frees ctx_restore_post_bb.\n\nFree ctx_restore_mid_bb[0].cs as well to avoid leaking the allocation\nwhen the configfs device is removed.\n\n(cherry picked from commit a235e7d0098337c3f2d1e8f3610c719a589e115f)"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-03T13:24:30.548Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/7f971dfd48983074adc7bbcea3ee95ce7aad47cb"
        },
        {
          "url": "https://git.kernel.org/stable/c/3557359ea3df32430ea7c30f7a708ca9a91d7e0e"
        },
        {
          "url": "https://git.kernel.org/stable/c/e377182f0266f46f02d01838e6bde67b9dac0d66"
        }
      ],
      "title": "drm/xe/configfs: Free ctx_restore_mid_bb in release",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-23421",
    "datePublished": "2026-04-03T13:24:30.548Z",
    "dateReserved": "2026-01-13T15:37:46.015Z",
    "dateUpdated": "2026-04-03T13:24:30.548Z",
    "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-5RF8-F7C5-4XMW

CVE-2026-23421 (GCVE-0-2026-23421)

Tags

Sightings

Nomenclature