CVE-2021-47647

{"id": "CVE-2021-47647", "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": "2025-02-26T06:37:06.490", "references": [{"url": "https://git.kernel.org/stable/c/41e360fa73a4c2f5b78f5ded78a5375b08c206a5", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/5a5576ad405c3c89fc9afb245c4dcc3e412b0aa9", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/8b89c9e68a01a19a1dd689a42aa65d545e931899", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/bf8f5182b8f59309809b41c1d1730ed9ca6134b1", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d02b3d4a8c525068bc5cfb4341e0023d8eb82ace", "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\nclk: qcom: ipq8074: fix PCI-E clock oops\n\nFix PCI-E clock related kernel oops that are caused by a missing clock\nparent.\n\npcie0_rchng_clk_src has num_parents set to 2 but only one parent is\nactually set via parent_hws, it should also have \"XO\" defined.\nThis will cause the kernel to panic on a NULL pointer in\nclk_core_get_parent_by_index().\n\nSo, to fix this utilize clk_parent_data to provide gcc_xo_gpll0 parent\ndata.\nSince there is already an existing static const char * const gcc_xo_gpll0[]\nused to provide the same parents via parent_names convert those users to\nclk_parent_data as well.\n\nWithout this earlycon is needed to even catch the OOPS as it will reset\nthe board before serial is initialized with the following:\n\n[ 0.232279] Unable to handle kernel paging request at virtual address 0000a00000000000\n[ 0.232322] Mem abort info:\n[ 0.239094] ESR = 0x96000004\n[ 0.241778] EC = 0x25: DABT (current EL), IL = 32 bits\n[ 0.244908] SET = 0, FnV = 0\n[ 0.250377] EA = 0, S1PTW = 0\n[ 0.253236] FSC = 0x04: level 0 translation fault\n[ 0.256277] Data abort info:\n[ 0.261141] ISV = 0, ISS = 0x00000004\n[ 0.264262] CM = 0, WnR = 0\n[ 0.267820] [0000a00000000000] address between user and kernel address ranges\n[ 0.270954] Internal error: Oops: 96000004 [#1] SMP\n[ 0.278067] Modules linked in:\n[ 0.282751] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 5.15.10 #0\n[ 0.285882] Hardware name: Xiaomi AX3600 (DT)\n[ 0.292043] pstate: 20400005 (nzCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n[ 0.296299] pc : clk_core_get_parent_by_index+0x68/0xec\n[ 0.303067] lr : __clk_register+0x1d8/0x820\n[ 0.308273] sp : ffffffc01111b7d0\n[ 0.312438] x29: ffffffc01111b7d0 x28: 0000000000000000 x27: 0000000000000040\n[ 0.315919] x26: 0000000000000002 x25: 0000000000000000 x24: ffffff8000308800\n[ 0.323037] x23: ffffff8000308850 x22: ffffff8000308880 x21: ffffff8000308828\n[ 0.330155] x20: 0000000000000028 x19: ffffff8000309700 x18: 0000000000000020\n[ 0.337272] x17: 000000005cc86990 x16: 0000000000000004 x15: ffffff80001d9d0a\n[ 0.344391] x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000006\n[ 0.351508] x11: 0000000000000003 x10: 0101010101010101 x9 : 0000000000000000\n[ 0.358626] x8 : 7f7f7f7f7f7f7f7f x7 : 6468626f5e626266 x6 : 17000a3a403c1b06\n[ 0.365744] x5 : 061b3c403a0a0017 x4 : 0000000000000000 x3 : 0000000000000001\n[ 0.372863] x2 : 0000a00000000000 x1 : 0000000000000001 x0 : ffffff8000309700\n[ 0.379982] Call trace:\n[ 0.387091] clk_core_get_parent_by_index+0x68/0xec\n[ 0.389351] __clk_register+0x1d8/0x820\n[ 0.394210] devm_clk_hw_register+0x5c/0xe0\n[ 0.398030] devm_clk_register_regmap+0x44/0x8c\n[ 0.402198] qcom_cc_really_probe+0x17c/0x1d0\n[ 0.406711] qcom_cc_probe+0x34/0x44\n[ 0.411224] gcc_ipq8074_probe+0x18/0x30\n[ 0.414869] platform_probe+0x68/0xe0\n[ 0.418776] really_probe.part.0+0x9c/0x30c\n[ 0.422336] __driver_probe_device+0x98/0x144\n[ 0.426329] driver_probe_device+0x44/0x11c\n[ 0.430842] __device_attach_driver+0xb4/0x120\n[ 0.434836] bus_for_each_drv+0x68/0xb0\n[ 0.439349] __device_attach+0xb0/0x170\n[ 0.443081] device_initial_probe+0x14/0x20\n[ 0.446901] bus_probe_device+0x9c/0xa4\n[ 0.451067] device_add+0x35c/0x834\n[ 0.454886] of_device_add+0x54/0x64\n[ 0.458360] of_platform_device_create_pdata+0xc0/0x100\n[ 0.462181] of_platform_bus_create+0x114/0x370\n[ 0.467128] of_platform_bus_create+0x15c/0x370\n[ 0.471641] of_platform_populate+0x50/0xcc\n[ 0.476155] of_platform_default_populate_init+0xa8/0xc8\n[ 0.480324] do_one_initcall+0x50/0x1b0\n[ 0.485877] kernel_init_freeable+0x234/0x29c\n[ 0.489436] kernel_init+0x24/0x120\n[ 0.493948] ret_from_fork+0x10/0x20\n[ 0.497253] Code: d50323bf d65f03c0 f94002a2 b4000302 (f9400042)\n[ 0.501079] ---[ end trace 4ca7e1129da2abce ]---"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: clk: qcom: ipq8074: fix PCI-E clock oops Corrige los errores del kernel relacionados con el reloj PCI-E que son causados por un reloj padre faltante. pcie0_rchng_clk_src tiene num_parents establecido en 2, pero solo un padre est\u00e1 realmente establecido a trav\u00e9s de parent_hws, tambi\u00e9n deber\u00eda tener \"XO\" definido. Esto har\u00e1 que el kernel entre en p\u00e1nico en un puntero NULL en clk_core_get_parent_by_index(). Entonces, para solucionar esto, utilice clk_parent_data para proporcionar los datos del padre gcc_xo_gpll0. Dado que ya existe un static const char * const gcc_xo_gpll0[] utilizado para proporcionar los mismos padres a trav\u00e9s de parent_names, convierta esos usuarios a clk_parent_data tambi\u00e9n. Sin este earlycon es necesario incluso para detectar el OOPS ya que reiniciar\u00e1 la placa antes de que se inicialice el serial con lo siguiente: [0.232279] No se puede manejar la solicitud de paginaci\u00f3n del kernel en la direcci\u00f3n virtual 0000a00000000000 [0.232322] Informaci\u00f3n de aborto de memoria: [0.239094] ESR = 0x96000004 [0.241778] EC = 0x25: DABT (EL actual), IL = 32 bits [0.244908] SET = 0, FnV = 0 [0.250377] EA = 0, S1PTW = 0 [0.253236] FSC = 0x04: falla de traducci\u00f3n de nivel 0 [0.256277] Informaci\u00f3n de aborto de datos: [0.261141] ISV = 0, ISS = 0x00000004 [ 0.264262] CM = 0, WnR = 0 [ 0.267820] [0000a00000000000] direcci\u00f3n entre los rangos de direcciones del usuario y del n\u00facleo [ 0.270954] Error interno: Oops: 96000004 [#1] SMP [ 0.278067] M\u00f3dulos vinculados en: [ 0.282751] CPU: 1 PID: 1 Comm: swapper/0 No contaminado 5.15.10 #0 [ 0.285882] Nombre del hardware: Xiaomi AX3600 (DT) [ 0.292043] pstate: 20400005 (nzCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 0,296299] pc: clk_core_get_parent_by_index+0x68/0xec [0,303067] lr: __clk_register+0x1d8/0x820 [0,308273] sp: ffffffc01111b7d0 [0,312438] x29: ffffffc01111b7d0 x28: 0000000000000000 x27: 0000000000000040 [0,315919] x26: 000000000000002 x25: 0000000000000000 x24: ffffff8000308800 [ 0,323037] x23: ffffff8000308850 x22: ffffff8000308880 x21: ffffff8000308828 [ 0,330155] x20: 0000000000000028 x19: ffffff8000309700 x18: 0000000000000020 [ 0,337272] x17: 000000005cc86990 x16: 0000000000000004 x15: ffffff80001d9d0a [ 0,344391] x14: 0000000000000000 x13: 00000000000000000 x12: 0000000000000006 [ 0.351508] x11: 0000000000000003 x10: 0101010101010101 x9 : 0000000000000000 [ 0.358626] x8 : 7f7f7f7f7f7f7f7f x7 : 6468626f5e626266 x6 : 17000a3a403c1b06 [ 0.365744] x5 : 061b3c403a0a0017 x4 : 000000000000000 x3 : 0000000000000001 [ 0.372863] x2 : 0000a00000000000 x1 : 0000000000000001 x0 : ffffff8000309700 [ 0.379982] Rastreo de llamadas: [ 0.387091] clk_core_get_parent_by_index+0x68/0xec [ 0.389351] __clk_register+0x1d8/0x820 [ 0.394210] devm_clk_hw_register+0x5c/0xe0 [ 0.398030] devm_clk_register_regmap+0x44/0x8c [ 0.402198] qcom_cc_really_probe+0x17c/0x1d0 [ 0.406711] qcom_cc_probe+0x34/0x44 [ 0.411224] gcc_ipq8074_probe+0x18/0x30 [ 0.414869] platform_probe+0x68/0xe0 [ 0.418776] really_probe.part.0+0x9c/0x30c [ 0.422336] __driver_probe_device+0x98/0x144 [ 0.426329] driver_probe_device+0x44/0x11c [ 0.430842] __device_attach_driver+0xb4/0x120 [ 0.434836] bus_for_each_drv+0x68/0xb0 [ 0.439349] __device_attach+0xb0/0x170 [ 0.443081] device_initial_probe+0x14/0x20 [ 0.446901] bus_probe_device+0x9c/0xa4 [ 0.451067] device_add+0x35c/0x834 [ 0.454886] of_device_add+0x54/0x64 [ 0.458360] of_platform_device_create_pdata+0xc0/0x100 [ 0.462181] of_platform_bus_create+0x114/0x370 [ 0.467128] of_platform_bus_create+0x15c/0x370 [ 0.471641] of_platform_populate+0x50/0xcc [ 0.476155] of_platform_default_populate_init+0xa8/0xc8 [ 0.480324] do_one_initcall+0x50/0x1b0 [ 0.485877] kernel_init_freeable+0x234/0x29c [ 0.489436] kernel_init+0x24/0x120 [ 0.493948] ret_from_fork+0x10/0x20 [ 0.497253] C\u00f3digo: d50323bf d65f03c0 f94002a2 b4000302 (f9400042) [ 0.501079] ---[ fin del seguimiento 4ca7e1129da2abce ]---"}], "lastModified": "2025-09-23T18:49:21.383", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2F97CB26-001B-4811-8A9D-40FE3DB060DB", "versionEndExcluding": "5.10.110", "versionStartIncluding": "5.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "27C42AE8-B387-43E2-938A-E1C8B40BE6D5", "versionEndExcluding": "5.15.33", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "20C43679-0439-405A-B97F-685BEE50613B", "versionEndExcluding": "5.16.19", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "210C679C-CF84-44A3-8939-E629C87E54BF", "versionEndExcluding": "5.17.2", "versionStartIncluding": "5.17"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}