{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-26T16:44:46.402","vulnerabilities":[{"cve":{"id":"CVE-2021-47005","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2024-02-28T09:15:38.403","lastModified":"2024-12-09T18:23:57.377","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: endpoint: Fix NULL pointer dereference for ->get_features()\n\nget_features ops of pci_epc_ops may return NULL, causing NULL pointer\ndereference in pci_epf_test_alloc_space function. Let us add a check for\npci_epc_feature pointer in pci_epf_test_bind before we access it to avoid\nany such NULL pointer dereference and return -ENOTSUPP in case\npci_epc_feature is not found.\n\nWhen the patch is not applied and EPC features is not implemented in the\nplatform driver, we see the following dump due to kernel NULL pointer\ndereference.\n\nCall trace:\n pci_epf_test_bind+0xf4/0x388\n pci_epf_bind+0x3c/0x80\n pci_epc_epf_link+0xa8/0xcc\n configfs_symlink+0x1a4/0x48c\n vfs_symlink+0x104/0x184\n do_symlinkat+0x80/0xd4\n __arm64_sys_symlinkat+0x1c/0x24\n el0_svc_common.constprop.3+0xb8/0x170\n el0_svc_handler+0x70/0x88\n el0_svc+0x8/0x640\nCode: d2800581 b9403ab9 f9404ebb 8b394f60 (f9400400)\n---[ end trace a438e3c5a24f9df0 ]---"},{"lang":"es","value":"En el kernel de Linux, se resolvió la siguiente vulnerabilidad: PCI: endpoint: corrigió la desreferencia del puntero NULL para ->get_features() las operaciones get_features de pci_epc_ops pueden devolver NULL, lo que provoca la desreferencia del puntero NULL en la función pci_epf_test_alloc_space. Agreguemos una verificación del puntero pci_epc_feature en pci_epf_test_bind antes de acceder a él para evitar dicha desreferencia del puntero NULL y devolvamos -ENOTSUPP en caso de que no se encuentre pci_epc_feature. Cuando no se aplica el parche y las funciones de EPC no se implementan en el controlador de la plataforma, vemos el siguiente volcado debido a la desreferencia del puntero NULL del kernel. Rastreo de llamadas: pci_epf_test_bind+0xf4/0x388 pci_epf_bind+0x3c/0x80 pci_epc_epf_link+0xa8/0xcc configfs_symlink+0x1a4/0x48c vfs_symlink+0x104/0x184 do_symlinkat+0x80/0xd4 __arm64_sys _symlinkat+0x1c/0x24 el0_svc_common.constprop.3+0xb8/0x170 el0_svc_handler+0x70 /0x88 el0_svc+0x8/0x640 Código: d2800581 b9403ab9 f9404ebb 8b394f60 (f9400400) ---[ final de seguimiento a438e3c5a24f9df0 ]---"}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","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}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-476"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.1","versionEndExcluding":"5.10.38","matchCriteriaId":"CAB60547-0A86-466F-A613-4A88E230862A"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.11.22","matchCriteriaId":"83B53E9A-F426-4C03-9A5F-A931FF79827E"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"5.12.5","matchCriteriaId":"0274929A-B36C-4F4C-AB22-30A0DD6B995B"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/0169d4f0bee44fdfef908c13ed21fcb326c38695","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/6613bc2301ba291a1c5a90e1dc24cf3edf223c03","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/679ebad058b8168f10e63876d63b0877fd2fe784","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/bbed83d7060e07a5d309104d25a00f0a24441428","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/0169d4f0bee44fdfef908c13ed21fcb326c38695","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/6613bc2301ba291a1c5a90e1dc24cf3edf223c03","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/679ebad058b8168f10e63876d63b0877fd2fe784","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/bbed83d7060e07a5d309104d25a00f0a24441428","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]}]}}]}