161 lines
8.4 KiB
JSON
161 lines
8.4 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-2026-45909",
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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": "2026-05-13T15:03:33.084Z",
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"datePublished": "2026-05-27T12:17:23.099Z",
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"dateUpdated": "2026-08-05T12:28:42.127Z"
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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": "2026-08-05T12:28:42.127Z"
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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\nclk: mediatek: Drop __initconst from gates\n\nSince commit 8ceff24a754a (\"clk: mediatek: clk-gate: Refactor\nmtk_clk_register_gate to use mtk_gate struct\") the mtk_gate structs\nare no longer just used for initialization/registration, but also at\nruntime. So drop __initconst annotations."
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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 a clock-gate operation in the MediaTek clk driver, reached only by local clock-framework calls (driver/runtime-PM toggling); no remote network input flows into it, so the attacker needs local system access.\nAC:L - This is a use-after-free that becomes active deterministically once free_initmem() releases the .init.rodata gate arrays; the first runtime toggle of an affected gate reliably dereferences freed memory with no race or attacker-uncontrollable condition.\nPR:L - On these SoCs the affected peripheral gates are toggled by ordinary runtime-PM/device-idle transitions that an unprivileged local user can induce through normal device I/O, so basic unprivileged access suffices.\nUI:N - Triggering only requires a clock enable/disable on an affected gate; no victim action such as opening a file or mounting a filesystem is needed.\nS:U - The dangling pointer and its impact are entirely within the kernel's clock subsystem; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The UAF reads a freed init-memory object whose contents can be reclaimed/sprayed by the attacker, and the controlled gate->regs pointer is dereferenced for register offsets, enabling kernel-memory disclosure.\nI:H - Attacker-influenced freed-memory contents control gate->shift and gate->regs, turning regmap_write(offset, BIT(shift)) into a corrupted/controlled MMIO write — memory corruption leverageable beyond simple modification.\nA:H - Dereferencing the dangling cg->gate pointer (and a corrupted gate->regs) after init memory is freed reliably causes a kernel oops/crash."
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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/clk/mediatek/clk-mt7981-eth.c",
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"drivers/clk/mediatek/clk-mt8516.c"
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],
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"versions": [
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{
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"version": "8ceff24a754ac065123ae0ec9f31ec03aff55f8a",
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"lessThan": "1debd9ba7eb18af8fb63dc93517c6bbcab0e31ee",
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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": "8ceff24a754ac065123ae0ec9f31ec03aff55f8a",
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"lessThan": "866d8ecc4e789f7d73d6cafd1b122d1b6032b3b1",
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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": "8ceff24a754ac065123ae0ec9f31ec03aff55f8a",
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"lessThan": "871afb43e41ad4e8246438de495a939cd0f8113c",
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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/clk/mediatek/clk-mt7981-eth.c",
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"drivers/clk/mediatek/clk-mt8516.c"
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],
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"versions": [
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{
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"version": "6.18",
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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": "6.18",
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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": "6.18.14",
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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": "6.19.4",
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"lessThanOrEqual": "6.19.*",
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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": "7.0",
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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": "6.18",
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"versionEndExcluding": "6.18.14"
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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": "6.18",
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"versionEndExcluding": "6.19.4"
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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": "6.18",
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"versionEndExcluding": "7.0"
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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/1debd9ba7eb18af8fb63dc93517c6bbcab0e31ee"
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},
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{
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"url": "https://git.kernel.org/stable/c/866d8ecc4e789f7d73d6cafd1b122d1b6032b3b1"
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},
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{
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"url": "https://git.kernel.org/stable/c/871afb43e41ad4e8246438de495a939cd0f8113c"
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}
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],
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"title": "clk: mediatek: Drop __initconst from gates",
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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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} |