CVE-2022-49960

{"id": "CVE-2022-49960", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2025-06-18T11:15:23.237", "references": [{"url": "https://git.kernel.org/stable/c/458ec0c8f35963626ccd51c3d50b752de5f1b9d4", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/c2798203315f4729bab0b917bf4c17a159abf9f8", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-476"}]}], "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] <TASK>\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] </TASK>\n...\nKernel panic - not syncing: Fatal exception\n\n(cherry picked from commit c247cd03898c4c43c3bce6d4014730403bc13032)"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/i915: se corrige la desreferencia de puntero nulo. La Chromebook Asus CX550 se bloquea durante el arranque en el kernel v5.17-rc1. La causa principal es la desreferencia de puntero nulo de bi_next en tgl_get_bw_info() en drivers/gpu/drm/i915/display/intel_bw.c. ERROR: desreferencia de puntero NULL del kernel, direcci\u00f3n: 000000000000002e PGD 0 P4D 0 Oops: 0002 [#1] PREEMPT SMP NOPTI CPU: 0 PID: 1 Comm: swapper/0 Contaminado: GU 5.17.0-rc1 Nombre del hardware: Google Delbin/Delbin, BIOS Google_Delbin.13672.156.3 14/05/2021 RIP: 0010:tgl_get_bw_info+0x2de/0x510 ... [ 2.554467] Seguimiento de llamadas: [ 2.554467] [ 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] ... P\u00e1nico del kernel - no sincroniza: Excepci\u00f3n fatal (seleccionada de el commit c247cd03898c4c43c3bce6d4014730403bc13032)"}], "lastModified": "2025-11-14T18:09:40.270", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7A044F00-B11E-4DF6-A350-1BB3E8D6D5C1", "versionEndExcluding": "5.19.8", "versionStartIncluding": "5.17"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.0:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E8BD11A3-8643-49B6-BADE-5029A0117325"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.0:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5F0AD220-F6A9-4012-8636-155F1B841FAD"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.0:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A46498B3-78E1-4623-AAE1-94D29A42BE4E"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}