CVE-2023-53446

{"id": "CVE-2023-53446", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "published": "2025-09-18T16:15:48.940", "references": [{"url": "https://git.kernel.org/stable/c/4203722d51afe3d239e03f15cc73efdf023a7103", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/456d8aa37d0f56fc9e985e812496e861dcd6f2f2", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/666e7f9d60cee23077ea3e6331f6f8a19f7ea03f", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/7aecdd47910c51707696e8b0e045b9f88bd4230f", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/7badf4d6f49a358a01ab072bbff88d3ee886c33b", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/9856c0de49052174ab474113f4ba40c02aaee086", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d51d2eeae4ce54d542909c4d9d07bf371a78592c", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-416"}]}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-416"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI/ASPM: Disable ASPM on MFD function removal to avoid use-after-free\n\nStruct pcie_link_state->downstream is a pointer to the pci_dev of function\n0. Previously we retained that pointer when removing function 0, and\nsubsequent ASPM policy changes dereferenced it, resulting in a\nuse-after-free warning from KASAN, e.g.:\n\n # echo 1 > /sys/bus/pci/devices/0000:03:00.0/remove\n # echo powersave > /sys/module/pcie_aspm/parameters/policy\n\n BUG: KASAN: slab-use-after-free in pcie_config_aspm_link+0x42d/0x500\n Call Trace:\n kasan_report+0xae/0xe0\n pcie_config_aspm_link+0x42d/0x500\n pcie_aspm_set_policy+0x8e/0x1a0\n param_attr_store+0x162/0x2c0\n module_attr_store+0x3e/0x80\n\nPCIe spec r6.0, sec 7.5.3.7, recommends that software program the same ASPM\nControl value in all functions of multi-function devices.\n\nDisable ASPM and free the pcie_link_state when any child function is\nremoved so we can discard the dangling pcie_link_state->downstream pointer\nand maintain the same ASPM Control configuration for all functions.\n\n[bhelgaas: commit log and comment]"}], "lastModified": "2026-01-14T20:16:05.053", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2379FC6F-4DA2-43DA-AF1D-FC188CB1FB6B", "versionEndExcluding": "5.4.251", "versionStartIncluding": "4.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "43CAE50A-4A6C-488E-813C-F8DB77C13C8B", "versionEndExcluding": "5.10.188", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EC77775B-EC31-4966-966C-1286C02B2A85", "versionEndExcluding": "5.15.121", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9BD1D4A1-304D-4187-8178-6D7C0050B1AF", "versionEndExcluding": "6.1.39", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "95CB4836-7F5D-4C20-B025-8E046EC87B78", "versionEndExcluding": "6.3.13", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6AB81046-CB69-4115-924C-963B37C41385", "versionEndExcluding": "6.4.4", "versionStartIncluding": "6.4"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}