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drm/lima: call drm_mm_init() with a valid allocation range

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: drm/lima: call drm_mm_init() with a valid allocation range lima_vm_create() is currently run before va_start and va_end are set up, meaning they are both 0. lima_vm_create() runs drm_mm_init() with them as arguments for the allocator, and if DRM_DEBUG_MM is enabled the DRM_MM_BUG_ON check in drm_mm_init then fires, as seen here on exynos4412-odroid-u2: [ 1.736297] ------------[ cut here ]------------ [ 1.740370] kernel BUG at drivers/gpu/drm/drm_mm.c:931! [ 1.745574] Internal error: Oops - BUG: 0 [#1] SMP ARM [ 1.750697] Modules linked in: [ 1.753734] CPU: 0 UID: 0 PID: 41 Comm: kworker/u16:1 Not tainted 7.0.10-postmarketos-exynos4 #11 PREEMPT [ 1.763372] Hardware name: Samsung Exynos (Flattened Device Tree) [ 1.769446] Workqueue: events_unbound deferred_probe_work_func [ 1.775261] PC is at drm_mm_init+0x9c/0xa4 [ 1.779339] LR is at lima_vm_create+0x144/0x17c [ ... ] Fix the issue by moving the lima_vm_create() call after va_start and va_end are set up.

Announced Source revision 1
Original source ↗

CVE-2026-93183

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-93183

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "a1d2a6339961efc078208dc3b2f006e9e9a8e119",
        "lessThan": "af1f276d50c9d7ebcd25770f358ca503a89d96d7",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "a1d2a6339961efc078208dc3b2f006e9e9a8e119",
        "lessThan": "fd6bc5f1d6b54047b06b82bab25a7e21e4b1c95a",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "a1d2a6339961efc078208dc3b2f006e9e9a8e119",
        "lessThan": "ad4e908096dff97646f77b04e2e2825225e215f7",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "a1d2a6339961efc078208dc3b2f006e9e9a8e119",
        "lessThan": "788917ba77f5d69bd368c1d176ecceda346a2951",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "a1d2a6339961efc078208dc3b2f006e9e9a8e119",
        "lessThan": "79a3331ee436c8b1454f897d539606c9b5ebdf9f",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "a1d2a6339961efc078208dc3b2f006e9e9a8e119",
        "lessThan": "e2a7cee341986cb5b544a8286edc7fb0494c592e",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "a1d2a6339961efc078208dc3b2f006e9e9a8e119",
        "lessThan": "e0773ad25a34a49aece176721c466cf214e02222",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "a1d2a6339961efc078208dc3b2f006e9e9a8e119",
        "lessThan": "3b3bce4a692ac60d9f4a341e6b597dd1fd0a28f9",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/gpu/drm/lima/lima_device.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "5.2"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "5.2",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.270",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.221",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.188",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.157",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.110",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.52",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.2.6",
        "versionType": "semver",
        "lessThanOrEqual": "7.2.*"
      },
      {
        "status": "unaffected",
        "version": "7.3",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/gpu/drm/lima/lima_device.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-93183

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#37893 · Revision 1
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