CVE-2022-49960 (GCVE-0-2022-49960)

Vulnerability from cvelistv5 – Published: 2025-06-18 11:00 – Updated: 2025-06-18 11:00
VLAI?
Title
drm/i915: fix null pointer dereference
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/i915: fix null pointer dereference Asus chromebook CX550 crashes during boot on v5.17-rc1 kernel. The root cause is null pointer defeference of bi_next in tgl_get_bw_info() in drivers/gpu/drm/i915/display/intel_bw.c. BUG: kernel NULL pointer dereference, address: 000000000000002e PGD 0 P4D 0 Oops: 0002 [#1] PREEMPT SMP NOPTI CPU: 0 PID: 1 Comm: swapper/0 Tainted: G U 5.17.0-rc1 Hardware name: Google Delbin/Delbin, BIOS Google_Delbin.13672.156.3 05/14/2021 RIP: 0010:tgl_get_bw_info+0x2de/0x510 ... [ 2.554467] Call Trace: [ 2.554467] <TASK> [ 2.554467] intel_bw_init_hw+0x14a/0x434 [ 2.554467] ? _printk+0x59/0x73 [ 2.554467] ? _dev_err+0x77/0x91 [ 2.554467] i915_driver_hw_probe+0x329/0x33e [ 2.554467] i915_driver_probe+0x4c8/0x638 [ 2.554467] i915_pci_probe+0xf8/0x14e [ 2.554467] ? _raw_spin_unlock_irqrestore+0x12/0x2c [ 2.554467] pci_device_probe+0xaa/0x142 [ 2.554467] really_probe+0x13f/0x2f4 [ 2.554467] __driver_probe_device+0x9e/0xd3 [ 2.554467] driver_probe_device+0x24/0x7c [ 2.554467] __driver_attach+0xba/0xcf [ 2.554467] ? driver_attach+0x1f/0x1f [ 2.554467] bus_for_each_dev+0x8c/0xc0 [ 2.554467] bus_add_driver+0x11b/0x1f7 [ 2.554467] driver_register+0x60/0xea [ 2.554467] ? mipi_dsi_bus_init+0x16/0x16 [ 2.554467] i915_init+0x2c/0xb9 [ 2.554467] ? mipi_dsi_bus_init+0x16/0x16 [ 2.554467] do_one_initcall+0x12e/0x2b3 [ 2.554467] do_initcall_level+0xd6/0xf3 [ 2.554467] do_initcalls+0x4e/0x79 [ 2.554467] kernel_init_freeable+0xed/0x14d [ 2.554467] ? rest_init+0xc1/0xc1 [ 2.554467] kernel_init+0x1a/0x120 [ 2.554467] ret_from_fork+0x1f/0x30 [ 2.554467] </TASK> ... Kernel panic - not syncing: Fatal exception (cherry picked from commit c247cd03898c4c43c3bce6d4014730403bc13032)
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: c64a9a7c05beb2b71b7496d873654f88e1a08593 , < c2798203315f4729bab0b917bf4c17a159abf9f8 (git)
Affected: c64a9a7c05beb2b71b7496d873654f88e1a08593 , < 458ec0c8f35963626ccd51c3d50b752de5f1b9d4 (git)
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    Linux Linux Affected: 5.17
Unaffected: 0 , < 5.17 (semver)
Unaffected: 5.19.8 , ≤ 5.19.* (semver)
Unaffected: 6.0 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/i915/display/intel_bw.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "c2798203315f4729bab0b917bf4c17a159abf9f8",
              "status": "affected",
              "version": "c64a9a7c05beb2b71b7496d873654f88e1a08593",
              "versionType": "git"
            },
            {
              "lessThan": "458ec0c8f35963626ccd51c3d50b752de5f1b9d4",
              "status": "affected",
              "version": "c64a9a7c05beb2b71b7496d873654f88e1a08593",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/i915/display/intel_bw.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.17"
            },
            {
              "lessThan": "5.17",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.19.*",
              "status": "unaffected",
              "version": "5.19.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.19.8",
                  "versionStartIncluding": "5.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0",
                  "versionStartIncluding": "5.17",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/i915: fix null pointer dereference\n\nAsus chromebook CX550 crashes during boot on v5.17-rc1 kernel.\nThe root cause is null pointer defeference of bi_next\nin tgl_get_bw_info() in drivers/gpu/drm/i915/display/intel_bw.c.\n\nBUG: kernel NULL pointer dereference, address: 000000000000002e\nPGD 0 P4D 0\nOops: 0002 [#1] PREEMPT SMP NOPTI\nCPU: 0 PID: 1 Comm: swapper/0 Tainted: G     U            5.17.0-rc1\nHardware name: Google Delbin/Delbin, BIOS Google_Delbin.13672.156.3 05/14/2021\nRIP: 0010:tgl_get_bw_info+0x2de/0x510\n...\n[    2.554467] Call Trace:\n[    2.554467]  \u003cTASK\u003e\n[    2.554467]  intel_bw_init_hw+0x14a/0x434\n[    2.554467]  ? _printk+0x59/0x73\n[    2.554467]  ? _dev_err+0x77/0x91\n[    2.554467]  i915_driver_hw_probe+0x329/0x33e\n[    2.554467]  i915_driver_probe+0x4c8/0x638\n[    2.554467]  i915_pci_probe+0xf8/0x14e\n[    2.554467]  ? _raw_spin_unlock_irqrestore+0x12/0x2c\n[    2.554467]  pci_device_probe+0xaa/0x142\n[    2.554467]  really_probe+0x13f/0x2f4\n[    2.554467]  __driver_probe_device+0x9e/0xd3\n[    2.554467]  driver_probe_device+0x24/0x7c\n[    2.554467]  __driver_attach+0xba/0xcf\n[    2.554467]  ? driver_attach+0x1f/0x1f\n[    2.554467]  bus_for_each_dev+0x8c/0xc0\n[    2.554467]  bus_add_driver+0x11b/0x1f7\n[    2.554467]  driver_register+0x60/0xea\n[    2.554467]  ? mipi_dsi_bus_init+0x16/0x16\n[    2.554467]  i915_init+0x2c/0xb9\n[    2.554467]  ? mipi_dsi_bus_init+0x16/0x16\n[    2.554467]  do_one_initcall+0x12e/0x2b3\n[    2.554467]  do_initcall_level+0xd6/0xf3\n[    2.554467]  do_initcalls+0x4e/0x79\n[    2.554467]  kernel_init_freeable+0xed/0x14d\n[    2.554467]  ? rest_init+0xc1/0xc1\n[    2.554467]  kernel_init+0x1a/0x120\n[    2.554467]  ret_from_fork+0x1f/0x30\n[    2.554467]  \u003c/TASK\u003e\n...\nKernel panic - not syncing: Fatal exception\n\n(cherry picked from commit c247cd03898c4c43c3bce6d4014730403bc13032)"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-06-18T11:00:21.621Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/c2798203315f4729bab0b917bf4c17a159abf9f8"
        },
        {
          "url": "https://git.kernel.org/stable/c/458ec0c8f35963626ccd51c3d50b752de5f1b9d4"
        }
      ],
      "title": "drm/i915: fix null pointer dereference",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49960",
    "datePublished": "2025-06-18T11:00:21.621Z",
    "dateReserved": "2025-06-18T10:57:27.383Z",
    "dateUpdated": "2025-06-18T11:00:21.621Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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Detection rules are retrieved from Rulezet.