CVE-2022-48893 drm/i915/gt: Cleanup partial engine discovery failures

2024-08-2106:10:25

Linux

www.cve.org

linux kernel

vulnerability

resolved

engine discovery

EPSS

Percentile

9.5%

JSON

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

drm/i915/gt: Cleanup partial engine discovery failures

If we abort driver initialisation in the middle of gt/engine discovery,
some engines will be fully setup and some not. Those incompletely setup
engines only have ‘engine->release == NULL’ and so will leak any of the
common objects allocated.

v2:

Drop the destroy_pinned_context() helper for now. It’s not really
worth it with just a single callsite at the moment. (Janusz)

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/gpu/drm/i915/gt/intel_engine_cs.c"
    ],
    "versions": [
      {
        "version": "1da177e4c3f4",
        "lessThan": "5c855bcc7306",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f4",
        "lessThan": "78a033433a5a",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/gpu/drm/i915/gt/intel_engine_cs.c"
    ],
    "versions": [
      {
        "version": "6.1.7",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.2",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]