{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-40125", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T07:20:57.169Z", "datePublished": "2025-11-12T10:23:20.180Z", "dateUpdated": "2025-12-01T06:18:30.912Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-12-01T06:18:30.912Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblk-mq: check kobject state_in_sysfs before deleting in blk_mq_unregister_hctx\n\nIn __blk_mq_update_nr_hw_queues() the return value of\nblk_mq_sysfs_register_hctxs() is not checked. If sysfs creation for hctx\nfails, later changing the number of hw_queues or removing disk will\ntrigger the following warning:\n\n kernfs: can not remove 'nr_tags', no directory\n WARNING: CPU: 2 PID: 637 at fs/kernfs/dir.c:1707 kernfs_remove_by_name_ns+0x13f/0x160\n Call Trace:\n remove_files.isra.1+0x38/0xb0\n sysfs_remove_group+0x4d/0x100\n sysfs_remove_groups+0x31/0x60\n __kobject_del+0x23/0xf0\n kobject_del+0x17/0x40\n blk_mq_unregister_hctx+0x5d/0x80\n blk_mq_sysfs_unregister_hctxs+0x94/0xd0\n blk_mq_update_nr_hw_queues+0x124/0x760\n nullb_update_nr_hw_queues+0x71/0xf0 [null_blk]\n nullb_device_submit_queues_store+0x92/0x120 [null_blk]\n\nkobjct_del() was called unconditionally even if sysfs creation failed.\nFix it by checkig the kobject creation statusbefore deleting it."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["block/blk-mq-sysfs.c"], "versions": [{"version": "477e19dedc9d3e1f4443a1d4ae00572a988120ea", "lessThan": "a8c53553f1833cc2d14175d2d72cf37193a01898", "status": "affected", "versionType": "git"}, {"version": "477e19dedc9d3e1f4443a1d4ae00572a988120ea", "lessThan": "cc14ea21c4e658814d737ed4dedde6cd626a15ad", "status": "affected", "versionType": "git"}, {"version": "477e19dedc9d3e1f4443a1d4ae00572a988120ea", "lessThan": "4b97e99b87a773d52699521d40864f3ec888e9a6", "status": "affected", "versionType": "git"}, {"version": "477e19dedc9d3e1f4443a1d4ae00572a988120ea", "lessThan": "6e7dadc5763c48eb3b9b91265a21f312599ebb2c", "status": "affected", "versionType": "git"}, {"version": "477e19dedc9d3e1f4443a1d4ae00572a988120ea", "lessThan": "06c4826b1d900611096e4621e93133db57e13911", "status": "affected", "versionType": "git"}, {"version": "477e19dedc9d3e1f4443a1d4ae00572a988120ea", "lessThan": "babc634e9fe2803962dba98a07587e835dbc0731", "status": "affected", "versionType": "git"}, {"version": "477e19dedc9d3e1f4443a1d4ae00572a988120ea", "lessThan": "d5ddd76ee52bdc16e9f8b1e7791291e785dab032", "status": "affected", "versionType": "git"}, {"version": "477e19dedc9d3e1f4443a1d4ae00572a988120ea", "lessThan": "4c7ef92f6d4d08a27d676e4c348f4e2922cab3ed", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["block/blk-mq-sysfs.c"], "versions": [{"version": "4.20", "status": "affected"}, {"version": "0", "lessThan": "4.20", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.301", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.246", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.195", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.156", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.112", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.53", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.17.3", "lessThanOrEqual": "6.17.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18", "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": "4.20", "versionEndExcluding": "5.4.301"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "5.10.246"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "5.15.195"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "6.1.156"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "6.6.112"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "6.12.53"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "6.17.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "6.18"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/a8c53553f1833cc2d14175d2d72cf37193a01898"}, {"url": "https://git.kernel.org/stable/c/cc14ea21c4e658814d737ed4dedde6cd626a15ad"}, {"url": "https://git.kernel.org/stable/c/4b97e99b87a773d52699521d40864f3ec888e9a6"}, {"url": "https://git.kernel.org/stable/c/6e7dadc5763c48eb3b9b91265a21f312599ebb2c"}, {"url": "https://git.kernel.org/stable/c/06c4826b1d900611096e4621e93133db57e13911"}, {"url": "https://git.kernel.org/stable/c/babc634e9fe2803962dba98a07587e835dbc0731"}, {"url": "https://git.kernel.org/stable/c/d5ddd76ee52bdc16e9f8b1e7791291e785dab032"}, {"url": "https://git.kernel.org/stable/c/4c7ef92f6d4d08a27d676e4c348f4e2922cab3ed"}], "title": "blk-mq: check kobject state_in_sysfs before deleting in blk_mq_unregister_hctx", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblk-mq: check kobject state_in_sysfs before deleting in blk_mq_unregister_hctx\n\nIn __blk_mq_update_nr_hw_queues() the return value of\nblk_mq_sysfs_register_hctxs() is not checked. If sysfs creation for hctx\nfails, later changing the number of hw_queues or removing disk will\ntrigger the following warning:\n\n kernfs: can not remove 'nr_tags', no directory\n WARNING: CPU: 2 PID: 637 at fs/kernfs/dir.c:1707 kernfs_remove_by_name_ns+0x13f/0x160\n Call Trace:\n remove_files.isra.1+0x38/0xb0\n sysfs_remove_group+0x4d/0x100\n sysfs_remove_groups+0x31/0x60\n __kobject_del+0x23/0xf0\n kobject_del+0x17/0x40\n blk_mq_unregister_hctx+0x5d/0x80\n blk_mq_sysfs_unregister_hctxs+0x94/0xd0\n blk_mq_update_nr_hw_queues+0x124/0x760\n nullb_update_nr_hw_queues+0x71/0xf0 [null_blk]\n nullb_device_submit_queues_store+0x92/0x120 [null_blk]\n\nkobjct_del() was called unconditionally even if sysfs creation failed.\nFix it by checkig the kobject creation statusbefore deleting it."}], "id": "CVE-2025-40125", "lastModified": "2026-04-15T00:35:42.020", "metrics": {}, "published": "2025-11-12T11:15:42.043", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/06c4826b1d900611096e4621e93133db57e13911"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4b97e99b87a773d52699521d40864f3ec888e9a6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4c7ef92f6d4d08a27d676e4c348f4e2922cab3ed"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6e7dadc5763c48eb3b9b91265a21f312599ebb2c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a8c53553f1833cc2d14175d2d72cf37193a01898"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/babc634e9fe2803962dba98a07587e835dbc0731"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/cc14ea21c4e658814d737ed4dedde6cd626a15ad"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d5ddd76ee52bdc16e9f8b1e7791291e785dab032"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Deferred"}

{"bugzilla": {"description": "kernel: blk-mq: check kobject state_in_sysfs before deleting in blk_mq_unregister_hctx", "id": "2414504", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2414504"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nblk-mq: check kobject state_in_sysfs before deleting in blk_mq_unregister_hctx\nIn __blk_mq_update_nr_hw_queues() the return value of\nblk_mq_sysfs_register_hctxs() is not checked. If sysfs creation for hctx\nfails, later changing the number of hw_queues or removing disk will\ntrigger the following warning:\nkernfs: can not remove 'nr_tags', no directory\nWARNING: CPU: 2 PID: 637 at fs/kernfs/dir.c:1707 kernfs_remove_by_name_ns+0x13f/0x160\nCall Trace:\nremove_files.isra.1+0x38/0xb0\nsysfs_remove_group+0x4d/0x100\nsysfs_remove_groups+0x31/0x60\n__kobject_del+0x23/0xf0\nkobject_del+0x17/0x40\nblk_mq_unregister_hctx+0x5d/0x80\nblk_mq_sysfs_unregister_hctxs+0x94/0xd0\nblk_mq_update_nr_hw_queues+0x124/0x760\nnullb_update_nr_hw_queues+0x71/0xf0 [null_blk]\nnullb_device_submit_queues_store+0x92/0x120 [null_blk]\nkobjct_del() was called unconditionally even if sysfs creation failed.\nFix it by checkig the kobject creation statusbefore deleting it."], "name": "CVE-2025-40125", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-11-12T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-40125\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-40125\nhttps://lore.kernel.org/linux-cve-announce/2025111253-CVE-2025-40125-cb33@gregkh/T"], "threat_severity": "Low"}

{"created": "2025-11-12T22:12:12.778327+00:00", "updated": "2025-11-12T22:12:12.778351+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}