{"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"}}]}}