219 lines
12 KiB
JSON
219 lines
12 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2025-38656",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2025-04-16T04:51:24.030Z",
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"datePublished": "2025-08-22T16:00:59.678Z",
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"dateUpdated": "2026-10-21T12:37:12.525Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-10-21T12:37:12.525Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"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."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 7.8,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"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 — 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 — memory exhaustion — 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 — a full availability loss, on top of the WiFi device being permanently unusable."
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}
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]
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/net/wireless/intel/iwlwifi/dvm/main.c"
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],
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"versions": [
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{
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"version": "ca980f1911a7144d451d1c31298ab8507c6bd88f",
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"lessThan": "5c432da1ee191e9f7830dd516456706063d7bec3",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "7dd6350307af6521b6240b295c93b7eec4daebe6",
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"lessThan": "f95598a133a905fd937354ad902773d05593b8b9",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "c0e43c3f6c0a79381b468574c241065998412b7c",
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"version": "70a1b527eaea9430b1bd87de59f3b9f6bd225701",
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{
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{
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"version": "c80832d445653baba5ac80cd2c2637c437ac881b",
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"status": "affected",
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{
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"version": "b398120fbe0acfef60b16f6a0f69902d385d7728",
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},
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{
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"status": "affected",
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},
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{
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"version": "6663c52608d8d8727bf1911e6d9218069ba1c85e",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "5.4.297",
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"lessThan": "5.5",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "5.10.241",
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"lessThan": "5.11",
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"status": "affected",
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},
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{
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"version": "5.15.190",
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"lessThan": "5.16",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "6.1.148",
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"lessThan": "6.2",
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"status": "affected",
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"versionType": "semver"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/net/wireless/intel/iwlwifi/dvm/main.c"
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],
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"versions": [
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{
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"version": "6.6.102",
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"lessThan": "6.6.160",
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"status": "affected",
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},
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{
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"version": "6.12.42",
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"lessThan": "6.12.114",
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"status": "affected",
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"versionType": "semver"
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}
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]
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}
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],
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"cpeApplicability": [
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/5c432da1ee191e9f7830dd516456706063d7bec3"
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},
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{
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"url": "https://git.kernel.org/stable/c/f95598a133a905fd937354ad902773d05593b8b9"
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},
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{
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"url": "https://git.kernel.org/stable/c/991e2066f6009d3cb898413058c62dbcc92bd6d2"
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},
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{
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"url": "https://git.kernel.org/stable/c/1d068272c21d886d06526454b68368100ba0a720"
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},
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{
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"url": "https://git.kernel.org/stable/c/cf80c02a9fdb6c5bc8508beb6a0f6a1294fc32f6"
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}
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],
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"title": "wifi: iwlwifi: Fix error code in iwl_op_mode_dvm_start()",
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"x_generator": {
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"engine": "bippy-1.2.0"
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} |