316 lines
17 KiB
JSON
316 lines
17 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-2025-40118",
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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": "2025-04-16T07:20:57.168Z",
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"datePublished": "2025-11-12T10:23:18.179Z",
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"dateUpdated": "2026-08-05T12:07:55.038Z"
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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": "2026-08-05T12:07:55.038Z"
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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\nscsi: pm80xx: Fix array-index-out-of-of-bounds on rmmod\n\nSince commit f7b705c238d1 (\"scsi: pm80xx: Set phy_attached to zero when\ndevice is gone\") UBSAN reports:\n\n UBSAN: array-index-out-of-bounds in drivers/scsi/pm8001/pm8001_sas.c:786:17\n index 28 is out of range for type 'pm8001_phy [16]'\n\non rmmod when using an expander.\n\nFor a direct attached device, attached_phy contains the local phy id.\nFor a device behind an expander, attached_phy contains the remote phy\nid, not the local phy id.\n\nI.e. while pm8001_ha will have pm8001_ha->chip->n_phy local phys, for a\ndevice behind an expander, attached_phy can be much larger than\npm8001_ha->chip->n_phy (depending on the amount of phys of the\nexpander).\n\nE.g. on my system pm8001_ha has 8 phys with phy ids 0-7. One of the\nports has an expander connected. The expander has 31 phys with phy ids\n0-30.\n\nThe pm8001_ha->phy array only contains the phys of the HBA. It does not\ncontain the phys of the expander. Thus, it is wrong to use attached_phy\nto index the pm8001_ha->phy array for a device behind an expander.\n\nThus, we can only clear phy_attached for devices that are directly\nattached."
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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 out-of-bounds write is reached through local host operations on the pm80xx SAS HBA — system suspend (`pm8001_pci_suspend` → `sas_suspend_ha` → `sas_suspend_devices`), driver unbind/rmmod, or sysfs device delete — none of which cross a network boundary. A physical variant exists (hot-unplugging a drive on an expander phy ≥ 16), but the local suspend path is both reachable and more severe.\nAC:L - Once a SAS device is enumerated behind an expander with more than 16 phys — the standard 24/28/36-phy JBOD backplane configuration described in the commit — every suspend or removal event deterministically performs the OOB write, with no race to win and no unpredictable state required. The offending index is a stable property of the cabled topology, which the attacker can repeatedly re-trigger.\nPR:L - An unprivileged user with an active local session can invoke system suspend through the default logind/polkit policy, and `sas_suspend_devices()` calls `lldd_dev_gone` for every device on `port->dev_list`, including expander children, driving the OOB write without any capability. No CAP_SYS_MODULE or root is needed on this path.\nUI:N - The attacker triggers suspend or device teardown directly; no separate victim needs to open a file, mount a filesystem, or take any action.\nS:U - The corruption is confined to kernel heap memory managed by the same kernel security authority; there is no VM, IOMMU, or sandbox boundary crossed.\nC:H - A controllable-offset out-of-bounds write into and beyond a large kmalloc'd `pm8001_hba_info` object corrupts adjacent slab objects — zeroing a length, index, or pointer byte in a neighbouring structure is a standard route to over-read and kernel memory disclosure. Per kernel scoring guidance, memory corruption leveragable for info disclosure is High.\nI:H - This is a direct out-of-bounds write (`phy[idx].phy_attached = 0` with idx up to 127 into a 16-element array), landing in `asd_sas_port` list heads/spinlocks/pointers, the `devices`/`ccb_info` pointers, and ultimately in unrelated heap objects — a cross-object write primitive with attacker-influenced offset.\nA:H - The bug is confirmed by UBSAN as an array-index-out-of-bounds, and zeroing bytes of live `list_head`s, spinlocks, and kernel pointers reliably produces oopses, corrupted list traversal, or panic on the next use of the clobbered structure."
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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/scsi/pm8001/pm8001_sas.c"
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],
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"versions": [
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{
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"version": "05b512879eab41faa515b67fa3896d0005e97909",
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"lessThan": "d94be0a6ae9ade706d4270e740bdb4f79953a7fc",
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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": "bc2140c8136200b4437e1abc0fb659968cb9baab",
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"lessThan": "45acbf154befedd9bc135f5e031fe7855d1e6493",
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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": "1d8f9378cb4800c18e20d80ecd605b2b93e87a03",
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"lessThan": "eef5ef400893f8e3dbb09342583be0cdc716d566",
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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": "30e482dfb8f27d22f518695d4bcb5e7f4c6cb08a",
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"lessThan": "9c671d4dbfbfb0d73cfdfb706afb36d9ad60a582",
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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": "a862d24e1fc3ab1b5e5f20878d2898cea346d0ec",
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"lessThan": "e62251954a128a2d0fcbc19e5fa39e08935bb628",
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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": "0f9802f174227f553959422f844eeb9ba72467fe",
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"lessThan": "9326a1541e1b7ed3efdbab72061b82cf01c6477a",
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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": "f7b705c238d1483f0a766e2b20010f176e5c0fb7",
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"lessThan": "83ced3c206c292458e47c7fac54223abc7141585",
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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": "f7b705c238d1483f0a766e2b20010f176e5c0fb7",
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"lessThan": "251be2f6037fb7ab399f68cd7428ff274133d693",
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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": "722026c010fa75bcf9e2373aff1d7930a3d7e3cf",
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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": "5.4.293",
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"lessThan": "5.4.301",
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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": "5.10.237",
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"lessThan": "5.10.246",
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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": "5.15.181",
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"lessThan": "5.15.195",
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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": "6.1.136",
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"lessThan": "6.1.156",
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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": "6.6.89",
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"lessThan": "6.6.112",
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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": "6.12.26",
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"lessThan": "6.12.53",
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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": "6.14.5",
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"lessThan": "6.15",
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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": "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/scsi/pm8001/pm8001_sas.c"
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],
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"versions": [
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{
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"version": "6.15",
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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": "6.15",
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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": "5.4.301",
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"lessThanOrEqual": "5.4.*",
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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": "5.10.246",
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"lessThanOrEqual": "5.10.*",
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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": "5.15.195",
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"lessThanOrEqual": "5.15.*",
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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": "6.1.156",
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"lessThanOrEqual": "6.1.*",
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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": "6.6.112",
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"lessThanOrEqual": "6.6.*",
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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": "6.12.53",
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"lessThanOrEqual": "6.12.*",
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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": "6.17.3",
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"lessThanOrEqual": "6.17.*",
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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",
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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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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.4.293",
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"versionEndExcluding": "5.4.301"
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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/d94be0a6ae9ade706d4270e740bdb4f79953a7fc"
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},
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{
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"url": "https://git.kernel.org/stable/c/45acbf154befedd9bc135f5e031fe7855d1e6493"
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},
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{
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"url": "https://git.kernel.org/stable/c/eef5ef400893f8e3dbb09342583be0cdc716d566"
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},
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{
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"url": "https://git.kernel.org/stable/c/9c671d4dbfbfb0d73cfdfb706afb36d9ad60a582"
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},
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{
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"url": "https://git.kernel.org/stable/c/e62251954a128a2d0fcbc19e5fa39e08935bb628"
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},
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{
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"url": "https://git.kernel.org/stable/c/9326a1541e1b7ed3efdbab72061b82cf01c6477a"
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},
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{
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"url": "https://git.kernel.org/stable/c/83ced3c206c292458e47c7fac54223abc7141585"
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},
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{
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"url": "https://git.kernel.org/stable/c/251be2f6037fb7ab399f68cd7428ff274133d693"
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}
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],
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"title": "scsi: pm80xx: Fix array-index-out-of-of-bounds on rmmod",
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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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} |