CVE-2026-90164

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-90164", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.790Z", "datePublished": "2026-09-17T16:06:54.504Z", "dateUpdated": "2026-10-19T08:59:02.709Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T08:59:02.709Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb/server: abort initialization when proc setup fails\n\nksmbd_server_init() calls ksmbd_proc_init() before creating the\nremaining proc entries and server subsystems. ksmbd_proc_init() tears\ndown partial state on a procfs or percpu_counter allocation failure,\nbut returns void, so ksmbd_server_init() continues as if the counters\nwere usable.\n\nOnce userspace starts the server, server_ctrl_handle_init() calls\nksmbd_proc_reset(), which reaches percpu_counter_set() with a NULL\nper-CPU counters pointer on SMP systems. The later ksmbd_proc_create()\ncalls also receive a NULL parent and may create entries in the /proc\nroot; ksmbd_proc_cleanup() cannot remove those entries because\nksmbd_proc_fs is NULL."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/smb/server/misc.h", "fs/smb/server/proc.c", "fs/smb/server/server.c"], "versions": [{"version": "b38f99c1217ae04753340f0fdcd8f35bf56841dc", "lessThan": "fb4ba2bdfc1de8866e7c8e00df99f4b03ff42f09", "status": "affected", "versionType": "git"}, {"version": "b38f99c1217ae04753340f0fdcd8f35bf56841dc", "lessThan": "db97f3763727d652112ae70038d4e17b3ce277bb", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/smb/server/misc.h", "fs/smb/server/proc.c", "fs/smb/server/server.c"], "versions": [{"version": "7.0", "status": "affected"}, {"version": "0", "lessThan": "7.0", "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": "7.0", "versionEndExcluding": "7.2.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.0", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/fb4ba2bdfc1de8866e7c8e00df99f4b03ff42f09"}, {"url": "https://git.kernel.org/stable/c/db97f3763727d652112ae70038d4e17b3ce277bb"}], "title": "smb/server: abort initialization when proc setup fails", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["fs/smb/server/misc.h", "fs/smb/server/proc.c", "fs/smb/server/server.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "fb4ba2bdfc1de8866e7c8e00df99f4b03ff42f09", "status": "affected", "version": "b38f99c1217ae04753340f0fdcd8f35bf56841dc", "versionType": "git"}, {"lessThan": "db97f3763727d652112ae70038d4e17b3ce277bb", "status": "affected", "version": "b38f99c1217ae04753340f0fdcd8f35bf56841dc", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["fs/smb/server/misc.h", "fs/smb/server/proc.c", "fs/smb/server/server.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "7.0"}, {"lessThan": "7.0", "status": "unaffected", "version": "0", "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\nsmb/server: abort initialization when proc setup fails\n\nksmbd_server_init() calls ksmbd_proc_init() before creating the\nremaining proc entries and server subsystems. ksmbd_proc_init() tears\ndown partial state on a procfs or percpu_counter allocation failure,\nbut returns void, so ksmbd_server_init() continues as if the counters\nwere usable.\n\nOnce userspace starts the server, server_ctrl_handle_init() calls\nksmbd_proc_reset(), which reaches percpu_counter_set() with a NULL\nper-CPU counters pointer on SMP systems. The later ksmbd_proc_create()\ncalls also receive a NULL parent and may create entries in the /proc\nroot; ksmbd_proc_cleanup() cannot remove those entries because\nksmbd_proc_fs is NULL."}], "id": "CVE-2026-90164", "lastModified": "2026-10-19T09:19:06.407", "metrics": {}, "published": "2026-09-17T17:17:09.747", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/db97f3763727d652112ae70038d4e17b3ce277bb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fb4ba2bdfc1de8866e7c8e00df99f4b03ff42f09"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b38f99c1217ae04753340f0fdcd8f35bf56841dc,fb4ba2bdfc1de8866e7c8e00df99f4b03ff42f09)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b38f99c1217ae04753340f0fdcd8f35bf56841dc,db97f3763727d652112ae70038d4e17b3ce277bb)"}}], "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": "affected", "versions": {"scheme": "generic", "value": "7.0"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,7.0)"}}, {"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": "2026-09-18T17:45:11.683625+00:00", "updated": "2026-09-20T02:00:13.576951+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-476"]}