CVE-2022-50332

{
  "id": "CVE-2022-50332",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2025-09-15T15:15:45.427",
  "lastModified": "2026-11-05T20:17:35.447",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvideo/aperture: Call sysfb_disable() before removing PCI devices\n\nCall sysfb_disable() from aperture_remove_conflicting_pci_devices()\nbefore removing PCI devices. Without, simpledrm can still bind to\nsimple-framebuffer devices after the hardware driver has taken over\nthe hardware. Both drivers interfere with each other and results are\nundefined.\n\nReported modesetting errors [1] are shown below.\n\n---- snap ----\nrcu: INFO: rcu_sched detected expedited stalls on CPUs/tasks: { 13-.... } 7 jiffies s: 165 root: 0x2000/.\nrcu: blocking rcu_node structures (internal RCU debug):\nTask dump for CPU 13:\ntask:X               state:R  running task     stack:    0 pid: 4242 ppid:  4228 flags:0x00000008\nCall Trace:\n <TASK>\n ? commit_tail+0xd7/0x130\n ? drm_atomic_helper_commit+0x126/0x150\n ? drm_atomic_commit+0xa4/0xe0\n ? drm_plane_get_damage_clips.cold+0x1c/0x1c\n ? drm_atomic_helper_dirtyfb+0x19e/0x280\n ? drm_mode_dirtyfb_ioctl+0x10f/0x1e0\n ? drm_mode_getfb2_ioctl+0x2d0/0x2d0\n ? drm_ioctl_kernel+0xc4/0x150\n ? drm_ioctl+0x246/0x3f0\n ? drm_mode_getfb2_ioctl+0x2d0/0x2d0\n ? __x64_sys_ioctl+0x91/0xd0\n ? do_syscall_64+0x60/0xd0\n ? entry_SYSCALL_64_after_hwframe+0x4b/0xb5\n </TASK>\n...\nrcu: INFO: rcu_sched detected expedited stalls on CPUs/tasks: { 13-.... } 30 jiffies s: 169 root: 0x2000/.\nrcu: blocking rcu_node structures (internal RCU debug):\nTask dump for CPU 13:\ntask:X               state:R  running task     stack:    0 pid: 4242 ppid:  4228 flags:0x0000400e\nCall Trace:\n <TASK>\n ? memcpy_toio+0x76/0xc0\n ? memcpy_toio+0x1b/0xc0\n ? drm_fb_memcpy_toio+0x76/0xb0\n ? drm_fb_blit_toio+0x75/0x2b0\n ? simpledrm_simple_display_pipe_update+0x132/0x150\n ? drm_atomic_helper_commit_planes+0xb6/0x230\n ? drm_atomic_helper_commit_tail+0x44/0x80\n ? commit_tail+0xd7/0x130\n ? drm_atomic_helper_commit+0x126/0x150\n ? drm_atomic_commit+0xa4/0xe0\n ? drm_plane_get_damage_clips.cold+0x1c/0x1c\n ? drm_atomic_helper_dirtyfb+0x19e/0x280\n ? drm_mode_dirtyfb_ioctl+0x10f/0x1e0\n ? drm_mode_getfb2_ioctl+0x2d0/0x2d0\n ? drm_ioctl_kernel+0xc4/0x150\n ? drm_ioctl+0x246/0x3f0\n ? drm_mode_getfb2_ioctl+0x2d0/0x2d0\n ? __x64_sys_ioctl+0x91/0xd0\n ? do_syscall_64+0x60/0xd0\n ? entry_SYSCALL_64_after_hwframe+0x4b/0xb5\n </TASK>\n\nThe problem was added by commit 5e0137612430 (\"video/aperture: Disable\nand unregister sysfb devices via aperture helpers\") to v6.0.3 and does\nnot exist in the mainline branch.\n\nThe mainline commit 5e0137612430 (\"video/aperture: Disable and\nunregister sysfb devices via aperture helpers\") has been backported\nfrom v6.0-rc1 to stable v6.0.3 from a larger patch series [2] that\nreworks fbdev framebuffer ownership. The backport misses a change to\naperture_remove_conflicting_pci_devices(). Mainline itself is fine,\nbecause the function does not exist there as a result of the patch\nseries.\n\nInstead of backporting the whole series, fix the additional function."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "drivers/video/aperture.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "cfecfc98a78d97a49807531b5b224459bda877de",
              "lessThan": "25a6688f27ff54f97adf7cce1d7e18c38bf51eb4",
              "versionType": "git",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "drivers/video/aperture.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "6.0.3",
              "lessThan": "6.0.6",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-11-05T20:10:11.409195Z",
          "id": "CVE-2022-50332",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "6.0.3",
              "versionEndExcluding": "6.0.6",
              "matchCriteriaId": "0F67CC5B-7036-4706-B39E-199EC6741DBC"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/25a6688f27ff54f97adf7cce1d7e18c38bf51eb4",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ]
    }
  ]
}