{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-53446", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-09-17T14:54:09.753Z", "datePublished": "2025-09-18T16:04:21.939Z", "dateUpdated": "2026-05-11T19:45:09.783Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:45:09.783Z" }, "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]" } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/pci/pcie/aspm.c" ], "versions": [ { "version": "b5a0a9b59c8185aebcd9a717e2e6258b58c72c06", "lessThan": "666e7f9d60cee23077ea3e6331f6f8a19f7ea03f", "status": "affected", "versionType": "git" }, { "version": "b5a0a9b59c8185aebcd9a717e2e6258b58c72c06", "lessThan": "7badf4d6f49a358a01ab072bbff88d3ee886c33b", "status": "affected", "versionType": "git" }, { "version": "b5a0a9b59c8185aebcd9a717e2e6258b58c72c06", "lessThan": "9856c0de49052174ab474113f4ba40c02aaee086", "status": "affected", "versionType": "git" }, { "version": "b5a0a9b59c8185aebcd9a717e2e6258b58c72c06", "lessThan": "7aecdd47910c51707696e8b0e045b9f88bd4230f", "status": "affected", "versionType": "git" }, { "version": "b5a0a9b59c8185aebcd9a717e2e6258b58c72c06", "lessThan": "d51d2eeae4ce54d542909c4d9d07bf371a78592c", "status": "affected", "versionType": "git" }, { "version": "b5a0a9b59c8185aebcd9a717e2e6258b58c72c06", "lessThan": "4203722d51afe3d239e03f15cc73efdf023a7103", "status": "affected", "versionType": "git" }, { "version": "b5a0a9b59c8185aebcd9a717e2e6258b58c72c06", "lessThan": "456d8aa37d0f56fc9e985e812496e861dcd6f2f2", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/pci/pcie/aspm.c" ], "versions": [ { "version": "4.11", "status": "affected" }, { "version": "0", "lessThan": "4.11", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.251", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.188", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.121", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.39", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.3.13", "lessThanOrEqual": "6.3.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.4.4", "lessThanOrEqual": "6.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.5", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "5.4.251" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "5.10.188" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "5.15.121" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "6.1.39" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "6.3.13" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "6.4.4" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "6.5" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/666e7f9d60cee23077ea3e6331f6f8a19f7ea03f" }, { "url": "https://git.kernel.org/stable/c/7badf4d6f49a358a01ab072bbff88d3ee886c33b" }, { "url": "https://git.kernel.org/stable/c/9856c0de49052174ab474113f4ba40c02aaee086" }, { "url": "https://git.kernel.org/stable/c/7aecdd47910c51707696e8b0e045b9f88bd4230f" }, { "url": "https://git.kernel.org/stable/c/d51d2eeae4ce54d542909c4d9d07bf371a78592c" }, { "url": "https://git.kernel.org/stable/c/4203722d51afe3d239e03f15cc73efdf023a7103" }, { "url": "https://git.kernel.org/stable/c/456d8aa37d0f56fc9e985e812496e861dcd6f2f2" } ], "title": "PCI/ASPM: Disable ASPM on MFD function removal to avoid use-after-free", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "cvssV3_1": { "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" } }, { "other": { "type": "ssvc", "content": { "id": "CVE-2023-53446", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "version": "2.0.3", "timestamp": "2026-01-14T19:19:38.678315Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "cweId": "CWE-416", "description": "CWE-416 Use After Free" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-01-14T19:23:11.720Z" } } ] } }