CVE-2025-68193 (GCVE-0-2025-68193)

Vulnerability from cvelistv5 – Published: 2025-12-16 13:43 – Updated: 2026-10-21 12:38
VLAI
Title
drm/xe/guc: Add devm release action to safely tear down CT
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/xe/guc: Add devm release action to safely tear down CT When a buffer object (BO) is allocated with the XE_BO_FLAG_GGTT_INVALIDATE flag, the driver initiates TLB invalidation requests via the CTB mechanism while releasing the BO. However a premature release of the CTB BO can lead to system crashes, as observed in: Oops: Oops: 0000 [#1] SMP NOPTI RIP: 0010:h2g_write+0x2f3/0x7c0 [xe] Call Trace: guc_ct_send_locked+0x8b/0x670 [xe] xe_guc_ct_send_locked+0x19/0x60 [xe] send_tlb_invalidation+0xb4/0x460 [xe] xe_gt_tlb_invalidation_ggtt+0x15e/0x2e0 [xe] ggtt_invalidate_gt_tlb.part.0+0x16/0x90 [xe] ggtt_node_remove+0x110/0x140 [xe] xe_ggtt_node_remove+0x40/0xa0 [xe] xe_ggtt_remove_bo+0x87/0x250 [xe] Introduce a devm-managed release action during xe_guc_ct_init() and xe_guc_ct_init_post_hwconfig() to ensure proper CTB disablement before resource deallocation, preventing the use-after-free scenario.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6641 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 231c4110873a5db4975512c30aa10edcc5be56e2 , < fd4e41545d5955e6f7b4a0c4b56d21010ce8e812 (git)
Affected: 231c4110873a5db4975512c30aa10edcc5be56e2 , < 52faa05fcd9f78af99abebe30a4b7b444744c991 (git)
Affected: 231c4110873a5db4975512c30aa10edcc5be56e2 , < ee4b32220a6b41e71512e8804585325e685456ba (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.10
Unaffected: 0 , < 6.10 (semver)
Unaffected: 6.12.114 , ≤ 6.12.* (semver)
Unaffected: 6.17.8 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/xe/xe_guc.c",
            "drivers/gpu/drm/xe/xe_guc_ct.c",
            "drivers/gpu/drm/xe/xe_guc_ct.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "fd4e41545d5955e6f7b4a0c4b56d21010ce8e812",
              "status": "affected",
              "version": "231c4110873a5db4975512c30aa10edcc5be56e2",
              "versionType": "git"
            },
            {
              "lessThan": "52faa05fcd9f78af99abebe30a4b7b444744c991",
              "status": "affected",
              "version": "231c4110873a5db4975512c30aa10edcc5be56e2",
              "versionType": "git"
            },
            {
              "lessThan": "ee4b32220a6b41e71512e8804585325e685456ba",
              "status": "affected",
              "version": "231c4110873a5db4975512c30aa10edcc5be56e2",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/xe/xe_guc.c",
            "drivers/gpu/drm/xe/xe_guc_ct.c",
            "drivers/gpu/drm/xe/xe_guc_ct.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.10"
            },
            {
              "lessThan": "6.10",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.114",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.114",
                  "versionStartIncluding": "6.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17.8",
                  "versionStartIncluding": "6.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18",
                  "versionStartIncluding": "6.10",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe/guc: Add devm release action to safely tear down CT\n\nWhen a buffer object (BO) is allocated with the XE_BO_FLAG_GGTT_INVALIDATE\nflag, the driver initiates TLB invalidation requests via the CTB mechanism\nwhile releasing the BO. However a premature release of the CTB BO can lead\nto system crashes, as observed in:\n\nOops: Oops: 0000 [#1] SMP NOPTI\nRIP: 0010:h2g_write+0x2f3/0x7c0 [xe]\nCall Trace:\n guc_ct_send_locked+0x8b/0x670 [xe]\n xe_guc_ct_send_locked+0x19/0x60 [xe]\n send_tlb_invalidation+0xb4/0x460 [xe]\n xe_gt_tlb_invalidation_ggtt+0x15e/0x2e0 [xe]\n ggtt_invalidate_gt_tlb.part.0+0x16/0x90 [xe]\n ggtt_node_remove+0x110/0x140 [xe]\n xe_ggtt_node_remove+0x40/0xa0 [xe]\n xe_ggtt_remove_bo+0x87/0x250 [xe]\n\nIntroduce a devm-managed release action during xe_guc_ct_init() and\nxe_guc_ct_init_post_hwconfig() to ensure proper CTB disablement before\nresource deallocation, preventing the use-after-free scenario."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-21T12:38:02.508Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/fd4e41545d5955e6f7b4a0c4b56d21010ce8e812"
        },
        {
          "url": "https://git.kernel.org/stable/c/52faa05fcd9f78af99abebe30a4b7b444744c991"
        },
        {
          "url": "https://git.kernel.org/stable/c/ee4b32220a6b41e71512e8804585325e685456ba"
        }
      ],
      "title": "drm/xe/guc: Add devm release action to safely tear down CT",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-68193",
    "datePublished": "2025-12-16T13:43:19.702Z",
    "dateReserved": "2025-12-16T13:41:40.253Z",
    "dateUpdated": "2026-10-21T12:38:02.508Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2025-68193",
      "date": "2026-11-12",
      "epss": "0.0022",
      "percentile": "0.12691"
    },
    "microsoft_vex": {
      "current_release_date": "2026-01-08T14:44:48.000Z",
      "cve": "CVE-2025-68193",
      "id": "msrc_CVE-2025-68193",
      "initial_release_date": "2025-12-02T00:00:00.000Z",
      "product_status:known_not_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "drm/xe/guc: Add devm release action to safely tear down CT",
      "url": "https://msrc.microsoft.com/csaf/vex/2025/msrc_cve-2025-68193.json",
      "version": "2"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "drivers/gpu/drm/xe/xe_guc.c",
                  "drivers/gpu/drm/xe/xe_guc_ct.c",
                  "drivers/gpu/drm/xe/xe_guc_ct.h"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "fd4e41545d5955e6f7b4a0c4b56d21010ce8e812",
                    "status": "affected",
                    "version": "231c4110873a5db4975512c30aa10edcc5be56e2",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "52faa05fcd9f78af99abebe30a4b7b444744c991",
                    "status": "affected",
                    "version": "231c4110873a5db4975512c30aa10edcc5be56e2",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "ee4b32220a6b41e71512e8804585325e685456ba",
                    "status": "affected",
                    "version": "231c4110873a5db4975512c30aa10edcc5be56e2",
                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "drivers/gpu/drm/xe/xe_guc.c",
                  "drivers/gpu/drm/xe/xe_guc_ct.c",
                  "drivers/gpu/drm/xe/xe_guc_ct.h"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "6.10"
                  },
                  {
                    "lessThan": "6.10",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.12.*",
                    "status": "unaffected",
                    "version": "6.12.114",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.17.*",
                    "status": "unaffected",
                    "version": "6.17.8",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "6.18",
                    "versionType": "original_commit_for_fix"
                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe/guc: Add devm release action to safely tear down CT\n\nWhen a buffer object (BO) is allocated with the XE_BO_FLAG_GGTT_INVALIDATE\nflag, the driver initiates TLB invalidation requests via the CTB mechanism\nwhile releasing the BO. However a premature release of the CTB BO can lead\nto system crashes, as observed in:\n\nOops: Oops: 0000 [#1] SMP NOPTI\nRIP: 0010:h2g_write+0x2f3/0x7c0 [xe]\nCall Trace:\n guc_ct_send_locked+0x8b/0x670 [xe]\n xe_guc_ct_send_locked+0x19/0x60 [xe]\n send_tlb_invalidation+0xb4/0x460 [xe]\n xe_gt_tlb_invalidation_ggtt+0x15e/0x2e0 [xe]\n ggtt_invalidate_gt_tlb.part.0+0x16/0x90 [xe]\n ggtt_node_remove+0x110/0x140 [xe]\n xe_ggtt_node_remove+0x40/0xa0 [xe]\n xe_ggtt_remove_bo+0x87/0x250 [xe]\n\nIntroduce a devm-managed release action during xe_guc_ct_init() and\nxe_guc_ct_init_post_hwconfig() to ensure proper CTB disablement before\nresource deallocation, preventing the use-after-free scenario."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ndrm/xe/guc: A\u00f1adir acci\u00f3n de liberaci\u00f3n devm para desmantelar CT de forma segura\n\nCuando un objeto de b\u00fafer (BO) es asignado con la bandera XE_BO_FLAG_GGTT_INVALIDATE, el controlador inicia solicitudes de invalidaci\u00f3n de TLB a trav\u00e9s del mecanismo CTB mientras libera el BO. Sin embargo, una liberaci\u00f3n prematura del BO CTB puede provocar fallos del sistema, como se observ\u00f3 en:\n\nOops: Oops: 0000 [#1] SMP NOPTI\nRIP: 0010:h2g_write+0x2f3/0x7c0 [xe]\nCall Trace:\n guc_ct_send_locked+0x8b/0x670 [xe]\n xe_guc_ct_send_locked+0x19/0x60 [xe]\n send_tlb_invalidation+0xb4/0x460 [xe]\n xe_gt_tlb_invalidation_ggtt+0x15e/0x2e0 [xe]\n ggtt_invalidate_gt_tlb.part.0+0x16/0x90 [xe]\n ggtt_node_remove+0x110/0x140 [xe]\n xe_ggtt_node_remove+0x40/0xa0 [xe]\n xe_ggtt_remove_bo+0x87/0x250 [xe]\n\nIntroducir una acci\u00f3n de liberaci\u00f3n gestionada por devm durante xe_guc_ct_init() y xe_guc_ct_init_post_hwconfig() para asegurar la desactivaci\u00f3n adecuada de CTB antes de la desasignaci\u00f3n de recursos, previniendo el escenario de uso despu\u00e9s de liberaci\u00f3n."
          }
        ],
        "id": "CVE-2025-68193",
        "lastModified": "2026-10-21T13:18:21.073",
        "metrics": {},
        "published": "2025-12-16T14:15:52.020",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/52faa05fcd9f78af99abebe30a4b7b444744c991"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/ee4b32220a6b41e71512e8804585325e685456ba"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/fd4e41545d5955e6f7b4a0c4b56d21010ce8e812"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Deferred"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-11-07T10:38:51+00:00",
      "cve": "CVE-2025-68193",
      "id": "CVE-2025-68193",
      "initial_release_date": "2025-12-16T00:00:00+00:00",
      "product_status:known_affected": "110",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: drm/xe/guc: Add devm release action to safely tear down CT",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-68193.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON
How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Loading timeline…




    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.