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CVE-2021-47354 (GCVE-0-2021-47354)

Vulnerability from cvelistv5 – Published: 2024-05-21 14:35 – Updated: 2026-08-11 02:05
VLAI
Title
drm/sched: Avoid data corruptions
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/sched: Avoid data corruptions Wait for all dependencies of a job to complete before killing it to avoid data corruptions.
Severity
7.1 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-05-24 15:31 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 79867462634836ee5c39a2cdf624719feeb189bd , < c32d0f0e164ffab2a56c7cf8e612584b4b740e2e (git)
Affected: 79867462634836ee5c39a2cdf624719feeb189bd , < 0687411e2a8858262de2fc4a1d576016fd77292e (git)
Affected: 79867462634836ee5c39a2cdf624719feeb189bd , < a8e23e3c1ff9ec598ab1b3a941ace6045027781f (git)
Affected: 79867462634836ee5c39a2cdf624719feeb189bd , < 50d7e03ad487cc45fc85164a299b945a41756ac0 (git)
Affected: 79867462634836ee5c39a2cdf624719feeb189bd , < 0b10ab80695d61422337ede6ff496552d8ace99d (git)
guessed Create a notification for this product.
Linux Linux Affected: 4.15
Unaffected: 0 , < 4.15 (semver)
Unaffected: 5.4.133 , ≤ 5.4.* (semver)
Unaffected: 5.10.51 , ≤ 5.10.* (semver)
Unaffected: 5.12.18 , ≤ 5.12.* (semver)
Unaffected: 5.13.3 , ≤ 5.13.* (semver)
Unaffected: 5.14 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
linux linux_kernel Affected: 1da177e4c3f4 , < c32d0f0e164f (custom)
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
Create a notification for this product.
linux linux_kernel Affected: 1da177e4c3f4 , < 0687411e2a88 (custom)
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:x64:*
Create a notification for this product.
linux linux_kernel Affected: 1da177e4c3f4 , < a8e23e3c1ff9 (custom)
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
Create a notification for this product.
linux linux_kernel Affected: 1da177e4c3f4 , < 50d7e03ad487 (custom)
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
Create a notification for this product.
linux linux_kernel Affected: 1da177e4c3f4 , < 0b10ab80695d (custom)
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
Create a notification for this product.
linux linux_kernel Unaffected: 5.4.133 , ≤ 5.4.* (custom)
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
Create a notification for this product.
linux linux_kernel Unaffected: 5.10.51 , ≤ 5.10.* (custom)
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
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linux linux_kernel Unaffected: 5.12.18 , ≤ 5.12.* (custom)
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
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linux linux_kernel Unaffected: 5.13.3 , ≤ 5.13.* (custom)
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
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linux linux_kernel Unaffected: 5.14
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
Create a notification for this product.
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              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/sched: Avoid data corruptions\n\nWait for all dependencies of a job  to complete before\nkilling it to avoid data corruptions."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "baseScore": 7.1,
                "baseSeverity": "HIGH",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
                "version": "3.1"
              },
              "scenarios": [
                {
                  "lang": "en",
                  "value": "AV:L - Exploitation requires local access to a DRM render node (/dev/dri/renderD*) and GPU job submission ioctls; the vulnerable kill path runs on entity teardown after close or process exit, not from network packet processing.\nAC:L - An attacker can reliably trigger the bug by submitting jobs that depend on a fence they control (or a long-running prior job), then closing the DRM fd so flush times out, or exiting with SIGKILL so remaining queued jobs are killed without dependency waits.\nPR:L - Render nodes are usable by unprivileged users (render/video group on desktops, app GPU access on Android); no root or init-namespace capabilities are required to open the device and submit jobs.\nUI:N - The attacker performs submission and teardown themselves; no separate victim action is required to hit the kill path or to cause device-wide GPU faults/resets.\nS:U - Impact stays within the host kernel/GPU device authority (corrupted GPU buffers and possible GPU reset); this is not a VM escape, IOMMU bypass, or other cross-boundary scope change.\nC:N - The defect is broken fence ordering that races GPU accesses and corrupts buffer contents; it does not provide a new arbitrary read or confidential-memory disclosure primitive beyond data already reachable via shared mappings.\nI:H - Signaling a job finished and freeing it before its dependencies complete breaks the dma-resv/implicit-sync chain, so other clients\u0027 jobs can run concurrently with unfinished dependent GPU work and corrupt shared or subsequently synchronized GPU buffers.\nA:H - The resulting conflicting GPU accesses can induce GPU page faults, hangs, and device resets that deny graphics/compute availability system-wide for other users of the same GPU."
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-08-11T02:05:17.211Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/c32d0f0e164ffab2a56c7cf8e612584b4b740e2e"
            },
            {
              "url": "https://git.kernel.org/stable/c/0687411e2a8858262de2fc4a1d576016fd77292e"
            },
            {
              "url": "https://git.kernel.org/stable/c/a8e23e3c1ff9ec598ab1b3a941ace6045027781f"
            },
            {
              "url": "https://git.kernel.org/stable/c/50d7e03ad487cc45fc85164a299b945a41756ac0"
            },
            {
              "url": "https://git.kernel.org/stable/c/0b10ab80695d61422337ede6ff496552d8ace99d"
            }
          ],
          "title": "drm/sched: Avoid data corruptions",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2021-47354",
        "datePublished": "2024-05-21T14:35:57.772Z",
        "dateReserved": "2024-05-21T14:28:16.986Z",
        "dateUpdated": "2026-08-11T02:05:17.211Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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.


Detection rules are retrieved from Rulezet.


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.