{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2019-25162", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-02-26T17:07:20.465Z", "datePublished": "2024-02-26T17:20:20.846Z", "dateUpdated": "2026-08-05T08:43:46.382Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T08:43:46.382Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ni2c: Fix a potential use after free\n\nFree the adap structure only after we are done using it.\nThis patch just moves the put_device() down a bit to avoid the\nuse after free.\n\n[wsa: added comment to the code, added Fixes tag]" } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The vulnerable i2c_put_adapter path is reached locally via i2c-dev (/dev/i2c-* open/release) or other in-kernel get/put holders; it is not reachable from the network stack or unauthenticated remote protocols.\nAC:L - An attacker who can open the i2c device and induce adapter teardown (e.g., USB-I2C hot-unplug on a kiosk/shared system, or concurrent close while deletion awaits the final ref) controls both sides of the race, so success does not depend on unpredictable victim state.\nPR:L - Exploitation requires access to /dev/i2c-*, which in the most severe realistic deployments (embedded, Raspberry Pi, industrial/Android HALs) is granted to an unprivileged i2c-group user rather than full root; no init-namespace admin capability is required for the open/close side.\nUI:N - No separate victim action is required; the attacker performs the open/close and can trigger or participate in adapter removal themselves.\nS:U - This is a standard kernel memory-corruption/privilege-escalation issue within the host kernel's security authority; it does not cross VM, IOMMU, or other security boundaries.\nC:H - Use-after-free of the i2c_adapter object enables heap reuse and attacker-controlled object contents, which can be leveraged for arbitrary kernel memory disclosure.\nI:H - The same UAF primitive supports heap spraying and corruption of reused kernel objects, enabling arbitrary write and control-flow hijacking / code execution in kernel context.\nA:H - Dereferencing the freed adapter (and subsequent corrupted state) can cause kernel oops/panic or otherwise crash the system, fully impacting availability." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/i2c/i2c-core-base.c" ], "versions": [ { "version": "611e12ea0f121a31d9e9c4ce2a18a77abc2f28d6", "lessThan": 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