{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2025-38446", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T04:51:24.017Z", "datePublished": "2025-07-25T15:27:28.699Z", "dateUpdated": "2026-08-05T12:01:57.158Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:01:57.158Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nclk: imx: Fix an out-of-bounds access in dispmix_csr_clk_dev_data\n\nWhen num_parents is 4, __clk_register() occurs an out-of-bounds\nwhen accessing parent_names member. Use ARRAY_SIZE() instead of\nhardcode number here.\n\n BUG: KASAN: global-out-of-bounds in __clk_register+0x1844/0x20d8\n Read of size 8 at addr ffff800086988e78 by task kworker/u24:3/59\n Hardware name: NXP i.MX95 19X19 board (DT)\n Workqueue: events_unbound deferred_probe_work_func\n Call trace:\n dump_backtrace+0x94/0xec\n show_stack+0x18/0x24\n dump_stack_lvl+0x8c/0xcc\n print_report+0x398/0x5fc\n kasan_report+0xd4/0x114\n __asan_report_load8_noabort+0x20/0x2c\n __clk_register+0x1844/0x20d8\n clk_hw_register+0x44/0x110\n __clk_hw_register_mux+0x284/0x3a8\n imx95_bc_probe+0x4f4/0xa70" } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H", "baseScore": 7.3, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The faulty code is reached only through the i.MX95 platform driver probe path driven by the device tree (boot or deferred-probe workqueue), and can be re-triggered locally via module reload or sysfs driver bind; there is no network, adjacent-network, or physical-interface path to it.\nAC:L - The out-of-bounds access is unconditional and deterministic — every probe of the dispmix CSR block reads `parent_names[3]` past the 3-element array, with no race, timing window, or memory-layout condition involved.\nPR:L - No privileges are needed for the defect to fire, since it executes automatically during driver probe on affected hardware; deliberate re-triggering via bind/unbind or module reload would need local privileges, so at most low privileges are involved.\nUI:N - The out-of-bounds read happens automatically during device probe from the device tree with no victim action required.\nS:U - The out-of-bounds read, the wild dereference, and the corrupted clk parent map are all confined to the kernel's own security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The out-of-bounds pointer is not merely read but handed to `kstrdup_const()`/`kstrdup()`, so an unbounded `strlen()`/copy is performed from an out-of-bounds-derived address and the resulting kernel memory contents are stored as a clk parent name exposed through the clk debugfs interface.\nI:L - The garbage value is persisted into the kernel's clk parent map, corrupting clock-topology state for a 2-bit mux that can select the bogus index 3; there is no arbitrary-write or control-flow primitive, so the modification is limited.\nA:H - Dereferencing the out-of-bounds value as a string pointer typically faults on an invalid address, producing a kernel oops in the deferred-probe kworker during boot, and even without a fault the display-engine clock is left orphaned and non-functional." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/clk/imx/clk-imx95-blk-ctl.c" ], "versions": [ { "version": "5224b189462ff70df328f173b71acfd925092c3c", "lessThan": "fcee75daecc5234ee3482d8cf3518bf021d8a0a5", "status": "affected", "versionType": "git" }, { "version": "5224b189462ff70df328f173b71acfd925092c3c", "lessThan": "a956daad67cec454ee985e103e167711fab5b9b8", "status": "affected", "versionType": "git" }, { "version": "5224b189462ff70df328f173b71acfd925092c3c", "lessThan": "aacc875a448d363332b9df0621dde6d3a225ea9f", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/clk/imx/clk-imx95-blk-ctl.c" ], "versions": [ { "version": "6.10", "status": "affected" }, { "version": "0", "lessThan": "6.10", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.39", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.15.7", "lessThanOrEqual": "6.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.16", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.10", "versionEndExcluding": "6.12.39" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.10", "versionEndExcluding": "6.15.7" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.10", "versionEndExcluding": "6.16" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/fcee75daecc5234ee3482d8cf3518bf021d8a0a5" }, { "url": "https://git.kernel.org/stable/c/a956daad67cec454ee985e103e167711fab5b9b8" }, { "url": "https://git.kernel.org/stable/c/aacc875a448d363332b9df0621dde6d3a225ea9f" } ], "title": "clk: imx: Fix an out-of-bounds access in dispmix_csr_clk_dev_data", "x_generator": { "engine": "bippy-1.2.0" } } } }