138 lines
7.2 KiB
JSON
138 lines
7.2 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-2025-71158",
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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": "2026-01-13T15:30:19.665Z",
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"datePublished": "2026-01-23T15:23:57.016Z",
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"dateUpdated": "2026-08-05T12:12:24.125Z"
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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": "2026-08-05T12:12:24.125Z"
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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\ngpio: mpsse: ensure worker is torn down\n\nWhen an IRQ worker is running, unplugging the device would cause a\ncrash. The sealevel hardware this driver was written for was not\nhotpluggable, so I never realized it.\n\nThis change uses a spinlock to protect a list of workers, which\nit tears down on disconnect."
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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 - A local caller with write access to the USB device node can issue USBDEVFS_IOCTL containing USBDEVFS_DISCONNECT, which synchronously reaches gpio_mpsse_disconnect(); physical unplugging is an additional path.\nAC:L - The attacker can arm edge detection through GPIO_V2_GET_LINE_IOCTL and then initiate software disconnect, controlling both sides of the race. The continuously running polling worker makes repeated triggering practical.\nPR:L - Neither the GPIO request nor USBFS disconnect path performs a capable() or ns_capable() check; access is governed only by device-node DAC/LSM policy, so a basic user granted device access suffices.\nUI:N - No victim action is required after the attacker arms the worker and disconnects the interface, and deployed controller services may already keep GPIO edge IRQs continuously active.\nS:U - The vulnerable worker and affected resources are within the same host-kernel security authority, with no VM, IOMMU, or other security-boundary crossing.\nC:H - The worker can continue dereferencing a devm-freed mpsse_priv containing kernel pointers and synchronization objects, allowing attacker-influenced reclaimed contents to support kernel-memory disclosure.\nI:H - The use-after-free performs operations through reclaimed pointers and mutexes, while the reclaimed gpio.ngpio value controls loops over fixed 16-entry stack arrays, making arbitrary corruption and control-flow hijacking defensible.\nA:H - The documented outcome is a kernel crash on disconnect, reachable through immediate NULL dereferences or subsequent use-after-free accesses by the unterminated worker."
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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/gpio/gpio-mpsse.c"
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],
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"versions": [
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{
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"version": "c46a74ff05c0ac76ba11ef21c930c3b447abf31a",
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"lessThan": "472d900c8bcac301ae0e40fdca7db799bd989ff5",
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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": "c46a74ff05c0ac76ba11ef21c930c3b447abf31a",
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"lessThan": "179ef1127d7a4f09f0e741fa9f30b8a8e7886271",
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"status": "affected",
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"versionType": "git"
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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": "affected",
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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/gpio/gpio-mpsse.c"
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],
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"versions": [
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{
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"version": "6.13",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "6.13",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.6",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.19",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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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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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.13",
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"versionEndExcluding": "6.18.6"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.13",
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"versionEndExcluding": "6.19"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/472d900c8bcac301ae0e40fdca7db799bd989ff5"
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},
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{
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"url": "https://git.kernel.org/stable/c/179ef1127d7a4f09f0e741fa9f30b8a8e7886271"
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}
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],
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"title": "gpio: mpsse: ensure worker is torn down",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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}
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}
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} |