CVE-2025-38656

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I believe the\nmissing error code potentially leads to a use after free involving\ndebugfs."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The vulnerable code is only reachable through the iwlwifi driver's PCI probe / firmware-load callback and the `iwl_opmode_register()` path when the `iwldvm` module loads \u2014 local module-load or device-bind activity, not any network or wireless frame processing (the radio is not even up at this point).\nAC:L - Reaching the faulty branch requires `alloc_ordered_workqueue()` to fail with ENOMEM at one specific small allocation during a one-shot driver probe; an attacker can raise system-wide memory pressure but cannot influence the timing of a boot-time or hotplug probe, so success depends on conditions outside their control.\nPR:L - Driver probe is normally triggered by root (modprobe, sysfs bind/unbind) or by hotplug, but an unprivileged local user can supply the only other precondition \u2014 memory exhaustion \u2014 while a probe occurs, so basic local user privileges are assumed rather than full root.\nUI:N - No victim action beyond ordinary system operation is needed; the probe path executes automatically at boot, on module autoload, or on device hotplug.\nS:U - The freed objects and the stale debugfs dentry all live in the kernel's own security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The commit identifies a resulting use-after-free involving debugfs; `ieee80211_free_hw()` has already freed the `iwl_priv` allocation while `drv->dbgfs_op_mode` still references the orphaned tree, and a UAF on reclaimed slab memory can be leveraged to read attacker-chosen kernel data.\nI:H - The same use-after-free lets a reclaiming allocation overlap the freed object, giving a write primitive over kernel heap state that can be escalated to control-flow corruption.\nA:H - The driver is left in a half-torn-down state with a dangling debugfs reference, and dereferencing freed memory produces an oops/panic \u2014 a full availability loss, on top of the WiFi device being permanently unusable."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/wireless/intel/iwlwifi/dvm/main.c"], "versions": [{"version": "ca980f1911a7144d451d1c31298ab8507c6bd88f", "lessThan": "5c432da1ee191e9f7830dd516456706063d7bec3", "status": "affected", "versionType": "git"}, {"version": "7dd6350307af6521b6240b295c93b7eec4daebe6", "lessThan": "f95598a133a905fd937354ad902773d05593b8b9", "status": "affected", "versionType": "git"}, {"version": "c0e43c3f6c0a79381b468574c241065998412b7c", "lessThan": "991e2066f6009d3cb898413058c62dbcc92bd6d2", "status": "affected", "versionType": "git"}, {"version": "70a1b527eaea9430b1bd87de59f3b9f6bd225701", "lessThan": "1d068272c21d886d06526454b68368100ba0a720", "status": "affected", "versionType": "git"}, {"version": "90a0d9f339960448a3acc1437a46730f975efd6a", "lessThan": "cf80c02a9fdb6c5bc8508beb6a0f6a1294fc32f6", "status": "affected", "versionType": "git"}, {"version": "c80832d445653baba5ac80cd2c2637c437ac881b", "status": "affected", "versionType": "git"}, {"version": "b398120fbe0acfef60b16f6a0f69902d385d7728", "status": "affected", "versionType": "git"}, {"version": "2e9f85ee3b46453a2f250a57d3a9f10c70c71202", "status": "affected", "versionType": "git"}, {"version": "6663c52608d8d8727bf1911e6d9218069ba1c85e", "status": "affected", "versionType": "git"}, {"version": "5.4.297", "lessThan": "5.5", "status": "affected", "versionType": "semver"}, {"version": "5.10.241", "lessThan": "5.11", "status": "affected", "versionType": "semver"}, {"version": "5.15.190", "lessThan": "5.16", "status": "affected", "versionType": "semver"}, {"version": "6.1.148", "lessThan": "6.2", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/wireless/intel/iwlwifi/dvm/main.c"], "versions": [{"version": "6.6.102", "lessThan": "6.6.160", "status": "affected", "versionType": "semver"}, {"version": "6.12.42", "lessThan": "6.12.114", "status": "affected", "versionType": "semver"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6.102", "versionEndExcluding": "6.6.160"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12.42", "versionEndExcluding": "6.12.114"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4.297"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10.241"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15.190"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1.148"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/5c432da1ee191e9f7830dd516456706063d7bec3"}, {"url": "https://git.kernel.org/stable/c/f95598a133a905fd937354ad902773d05593b8b9"}, {"url": "https://git.kernel.org/stable/c/991e2066f6009d3cb898413058c62dbcc92bd6d2"}, {"url": "https://git.kernel.org/stable/c/1d068272c21d886d06526454b68368100ba0a720"}, {"url": "https://git.kernel.org/stable/c/cf80c02a9fdb6c5bc8508beb6a0f6a1294fc32f6"}], "title": "wifi: iwlwifi: Fix error code in iwl_op_mode_dvm_start()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/wireless/intel/iwlwifi/dvm/main.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "5c432da1ee191e9f7830dd516456706063d7bec3", "status": "affected", "version": "ca980f1911a7144d451d1c31298ab8507c6bd88f", "versionType": "git"}, {"lessThan": "f95598a133a905fd937354ad902773d05593b8b9", "status": "affected", "version": "7dd6350307af6521b6240b295c93b7eec4daebe6", "versionType": "git"}, {"lessThan": "991e2066f6009d3cb898413058c62dbcc92bd6d2", "status": "affected", "version": "c0e43c3f6c0a79381b468574c241065998412b7c", "versionType": "git"}, {"lessThan": "1d068272c21d886d06526454b68368100ba0a720", "status": "affected", "version": "70a1b527eaea9430b1bd87de59f3b9f6bd225701", "versionType": "git"}, {"lessThan": "cf80c02a9fdb6c5bc8508beb6a0f6a1294fc32f6", "status": "affected", "version": "90a0d9f339960448a3acc1437a46730f975efd6a", "versionType": "git"}, {"status": "affected", "version": "c80832d445653baba5ac80cd2c2637c437ac881b", "versionType": "git"}, {"status": "affected", "version": "b398120fbe0acfef60b16f6a0f69902d385d7728", "versionType": "git"}, {"status": "affected", "version": "2e9f85ee3b46453a2f250a57d3a9f10c70c71202", "versionType": "git"}, {"status": "affected", "version": "6663c52608d8d8727bf1911e6d9218069ba1c85e", "versionType": "git"}, {"lessThan": "5.5", "status": "affected", "version": "5.4.297", "versionType": "semver"}, {"lessThan": "5.11", "status": "affected", "version": "5.10.241", "versionType": "semver"}, {"lessThan": "5.16", "status": "affected", "version": "5.15.190", "versionType": "semver"}, {"lessThan": "6.2", "status": "affected", "version": "6.1.148", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/wireless/intel/iwlwifi/dvm/main.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "6.6.160", "status": "affected", "version": "6.6.102", "versionType": "semver"}, {"lessThan": "6.12.114", "status": "affected", "version": "6.12.42", "versionType": "semver"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "6A4268E9-3297-43A5-98D3-25B38D611EF5", "versionEndExcluding": "5.5", "versionStartIncluding": "5.4.297", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "FC16C741-04D3-418A-87C6-8EE23F15B67C", "versionEndExcluding": "5.11", "versionStartIncluding": "5.10.241", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "779090B6-6D23-42E7-90ED-481E657472A7", "versionEndExcluding": "5.16", "versionStartIncluding": "5.15.190", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "7FF17CE8-207D-456A-9353-68A7497DEB04", "versionEndExcluding": "6.2", "versionStartIncluding": "6.1.148", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "3F7DA246-015D-43A8-902B-4DE72648DFB3", "versionEndExcluding": "6.7", "versionStartIncluding": "6.6.102", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "392973F3-67F7-4E12-9723-C8E3F0305D68", "versionEndExcluding": "6.13", "versionStartIncluding": "6.12.42", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: iwlwifi: Fix error code in iwl_op_mode_dvm_start()\n\nPreserve the error code if iwl_setup_deferred_work() fails. The current\ncode returns ERR_PTR(0) (which is NULL) on this path. I believe the\nmissing error code potentially leads to a use after free involving\ndebugfs."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: wifi: iwlwifi: Se corrige el c\u00f3digo de error en iwl_op_mode_dvm_start(). Se conserva el c\u00f3digo de error si iwl_setup_deferred_work() falla. El c\u00f3digo actual devuelve ERR_PTR(0) (que es NULL) en esta ruta. Creo que la falta del c\u00f3digo de error podr\u00eda provocar un uso posterior a la liberaci\u00f3n que involucre debugfs."}], "id": "CVE-2025-38656", "lastModified": "2026-10-21T13:18:12.740", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2025-08-22T16:15:40.633", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1d068272c21d886d06526454b68368100ba0a720"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5c432da1ee191e9f7830dd516456706063d7bec3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/991e2066f6009d3cb898413058c62dbcc92bd6d2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/cf80c02a9fdb6c5bc8508beb6a0f6a1294fc32f6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f95598a133a905fd937354ad902773d05593b8b9"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: wifi: iwlwifi: Fix error code in iwl_op_mode_dvm_start()", "id": "2390384", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2390384"}, "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"}, "cwe": "CWE-416", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nwifi: iwlwifi: Fix error code in iwl_op_mode_dvm_start()\nPreserve the error code if iwl_setup_deferred_work() fails. The current\ncode returns ERR_PTR(0) (which is NULL) on this path. I believe the\nmissing error code potentially leads to a use after free involving\ndebugfs."], "name": "CVE-2025-38656", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-08-22T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-38656\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-38656\nhttps://lore.kernel.org/linux-cve-announce/2025082238-CVE-2025-38656-32f1@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-08-23T11:53:17.059898+00:00", "updated": "2025-08-23T11:53:17.059970+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}