CVE-2026-93251

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-93251", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-17T16:02:15.096Z", "datePublished": "2026-09-24T15:51:27.511Z", "dateUpdated": "2026-10-30T12:36:32.328Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-30T12:36:32.328Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: bus: Introduce acpi_bus_get_primary_device()\n\nThe function used for obtaining the first \"physical\" device for which\nthe given ACPI one is the ACPI companion, acpi_get_first_physical_node(),\nmay return a stale device pointer (mostly in theory) because\nacpi_unbind_one() may run as a whole after dropping the ACPI device's\nphysical_node_lock in acpi_get_first_physical_node() and before it\nreturns. The last reference to the \"physical\" device may be dropped\nthen before the pointer to it is returned to the caller.\n\nIf that happens and the acpi_get_first_physical_node() caller invokes\nget_device() on the pointer obtained from it, which is done by the\nmajority of its callers, a use-after-free will occur.\n\nTo prepare for addressing this problem, introduce a new function for\ngetting the first \"physical\" device associated with the given ACPI one\n(the \"primary physical device\") that will also reference count the\ndevice in question before returning a pointer to it.\n\nMake that new function and acpi_get_first_physical_node() share the\nphysical node list lookup code.\n\nNo intentional functional impact."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/acpi/bus.c", "include/acpi/acpi_bus.h"], "versions": [{"version": "91e5687805885f9fceb60b95e950a3d3bdcf4764", "lessThan": "f912f88126e385f6cfcd1a28de73afb7d3943c8d", "status": "affected", "versionType": "git"}, {"version": "91e5687805885f9fceb60b95e950a3d3bdcf4764", "lessThan": "50ddd82b88b1d1cc467b5df953344c1a9feec268", "status": "affected", "versionType": "git"}, {"version": "91e5687805885f9fceb60b95e950a3d3bdcf4764", "lessThan": "fd4f907b558721716da30acd6630191acf811b95", "status": "affected", "versionType": "git"}, {"version": "91e5687805885f9fceb60b95e950a3d3bdcf4764", "lessThan": "ebdd932dc24c1cf7cc31710b7730515e4e66d886", "status": "affected", "versionType": "git"}, {"version": "91e5687805885f9fceb60b95e950a3d3bdcf4764", "lessThan": "5657859851abb65105220a6cdb5804926249f714", "status": "affected", "versionType": "git"}, {"version": "91e5687805885f9fceb60b95e950a3d3bdcf4764", "lessThan": "72530e1f72b0515a73fd88292254d04fecf03649", "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/acpi/bus.c", "include/acpi/acpi_bus.h"], "versions": [{"version": "3.8", "status": "affected"}, {"version": "0", "lessThan": "3.8", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.191", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.160", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.114", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.57", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.6", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "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": "3.8", "versionEndExcluding": "6.1.191"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "6.6.160"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "6.12.114"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "6.18.57"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "7.2.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/f912f88126e385f6cfcd1a28de73afb7d3943c8d"}, {"url": "https://git.kernel.org/stable/c/50ddd82b88b1d1cc467b5df953344c1a9feec268"}, {"url": "https://git.kernel.org/stable/c/fd4f907b558721716da30acd6630191acf811b95"}, {"url": "https://git.kernel.org/stable/c/ebdd932dc24c1cf7cc31710b7730515e4e66d886"}, {"url": "https://git.kernel.org/stable/c/5657859851abb65105220a6cdb5804926249f714"}, {"url": "https://git.kernel.org/stable/c/72530e1f72b0515a73fd88292254d04fecf03649"}], "title": "ACPI: bus: Introduce acpi_bus_get_primary_device()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/acpi/bus.c", "include/acpi/acpi_bus.h"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "f912f88126e385f6cfcd1a28de73afb7d3943c8d", "status": "affected", "version": "91e5687805885f9fceb60b95e950a3d3bdcf4764", "versionType": "git"}, {"lessThan": "50ddd82b88b1d1cc467b5df953344c1a9feec268", "status": "affected", "version": "91e5687805885f9fceb60b95e950a3d3bdcf4764", "versionType": "git"}, {"lessThan": "fd4f907b558721716da30acd6630191acf811b95", "status": "affected", "version": "91e5687805885f9fceb60b95e950a3d3bdcf4764", "versionType": "git"}, {"lessThan": "ebdd932dc24c1cf7cc31710b7730515e4e66d886", "status": "affected", "version": "91e5687805885f9fceb60b95e950a3d3bdcf4764", "versionType": "git"}, {"lessThan": "5657859851abb65105220a6cdb5804926249f714", "status": "affected", "version": "91e5687805885f9fceb60b95e950a3d3bdcf4764", "versionType": "git"}, {"lessThan": "72530e1f72b0515a73fd88292254d04fecf03649", "status": "affected", "version": "91e5687805885f9fceb60b95e950a3d3bdcf4764", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/acpi/bus.c", "include/acpi/acpi_bus.h"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "3.8"}, {"lessThan": "3.8", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.191", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.160", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.114", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.57", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: bus: Introduce acpi_bus_get_primary_device()\n\nThe function used for obtaining the first \"physical\" device for which\nthe given ACPI one is the ACPI companion, acpi_get_first_physical_node(),\nmay return a stale device pointer (mostly in theory) because\nacpi_unbind_one() may run as a whole after dropping the ACPI device's\nphysical_node_lock in acpi_get_first_physical_node() and before it\nreturns. The last reference to the \"physical\" device may be dropped\nthen before the pointer to it is returned to the caller.\n\nIf that happens and the acpi_get_first_physical_node() caller invokes\nget_device() on the pointer obtained from it, which is done by the\nmajority of its callers, a use-after-free will occur.\n\nTo prepare for addressing this problem, introduce a new function for\ngetting the first \"physical\" device associated with the given ACPI one\n(the \"primary physical device\") that will also reference count the\ndevice in question before returning a pointer to it.\n\nMake that new function and acpi_get_first_physical_node() share the\nphysical node list lookup code.\n\nNo intentional functional impact."}], "id": "CVE-2026-93251", "lastModified": "2026-10-30T13:21:01.420", "metrics": {}, "published": "2026-09-24T16:17:21.340", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/50ddd82b88b1d1cc467b5df953344c1a9feec268"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5657859851abb65105220a6cdb5804926249f714"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/72530e1f72b0515a73fd88292254d04fecf03649"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ebdd932dc24c1cf7cc31710b7730515e4e66d886"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f912f88126e385f6cfcd1a28de73afb7d3943c8d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fd4f907b558721716da30acd6630191acf811b95"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,5657859851abb65105220a6cdb5804926249f714)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,72530e1f72b0515a73fd88292254d04fecf03649)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,7.2.6)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.6,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-25T03:30:07.563143+00:00", "updated": "2026-09-25T11:15:05.651523+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-416"]}