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CVE-2022-50528 (GCVE-0-2022-50528)

Vulnerability from cvelistv5 – Published: 2025-10-07 15:19 – Updated: 2026-08-05 08:59
VLAI
Title
drm/amdkfd: Fix memory leakage
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Fix memory leakage This patch fixes potential memory leakage and seg fault in _gpuvm_import_dmabuf() function
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: d4ec4bdc0bd5ad352854473ba4dcbdb39fd5bfdd , < 8876793e56ec69b3be2a883b4bc440df3dbb1865 (git)
Affected: d4ec4bdc0bd5ad352854473ba4dcbdb39fd5bfdd , < 7356d8e367d0e025a568e369c4cf575722cac60f (git)
Affected: d4ec4bdc0bd5ad352854473ba4dcbdb39fd5bfdd , < c65564790048fa416ccd26a8945c7ec0cf9ef0b7 (git)
Affected: d4ec4bdc0bd5ad352854473ba4dcbdb39fd5bfdd , < 75818afff631e1ea785a82c3e8bb82eb0dee539c (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.14
Unaffected: 0 , < 5.14 (semver)
Unaffected: 5.15.86 , ≤ 5.15.* (semver)
Unaffected: 6.0.16 , ≤ 6.0.* (semver)
Unaffected: 6.1.2 , ≤ 6.1.* (semver)
Unaffected: 6.2 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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              "value": "AV:L - The bug is reached only through the local AMDKFD_IOC_IMPORT_DMABUF ioctl on /dev/kfd (kfd_ioctl \u2192 kfd_ioctl_import_dmabuf \u2192 amdgpu_amdkfd_gpuvm_import_dmabuf), not via network or adjacent-link protocols.\nAC:L - A local attacker who can open /dev/kfd can prepare a valid amdgpu dmabuf, call import, and induce memory pressure so the post-kzalloc drm_vma_node_allow kmalloc fails; that OOM condition is attacker-influenced, not a victim-only race or layout.\nPR:L - /dev/kfd is udev MODE 0660 GROUP render with seat uaccess, and IMPORT_DMABUF has no capability flag; any unprivileged render/seat user can open the device and issue the ioctl.\nUI:N - The attacker opens /dev/kfd, acquires a VM, and issues IMPORT_DMABUF themselves; no separate victim action is required.\nS:U - Impact is host-kernel memory corruption/DoS within the same OS security authority; the path does not cross a VM, IOMMU, or other boundary.\nC:H - kfree(mem) frees a stack address, so free_large_kmalloc/__free_pages releases the wrong page (or a miscomputed page under VMAP_STACK), enabling allocator/page reuse and kernel memory disclosure primitives.\nI:H - The same invalid free returns a live kernel page to the allocator while it may still be in use, yielding memory corruption and write/control-flow hijack primitives beyond a pure crash.\nA:H - The fix commit documents a segfault on this path, and freeing the wrong page predictably causes kernel oops/panic or hang, which is Availability High."
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      "cve": "CVE-2022-50528",
      "id": "CVE-2022-50528",
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      "status": "interim",
      "title": "SUSE CVE CVE-2022-50528",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-50528.json",
      "version": "34"
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  }
}



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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

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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.