CVE-2024-56540

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The previous approach of triggering recovery\nwithin these functions could lead to a race condition, potentially causing\nundefined behavior and kernel crashes due to null pointer dereferences."}], "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 paths are reached through the DRM accel character device (`/dev/accel/accelN`) via `ivpu_submit_ioctl`/`ivpu_rpm_get()` driving runtime PM resume/suspend, or via local driver probe and system suspend/resume. No network or remote input is involved.\nAC:L - The attacker controls both sides of the race \u2014 it drives runtime resume/suspend cycles via repeated ioctls while the queued `recovery_work` runs on `system_long_wq`, and can wedge the NPU firmware with its own submitted workload to produce the required IPC timeouts. Per the race-condition guidance this is Low, and the window is widened arbitrarily by repeated triggering.\nPR:L - An open file descriptor on the accel device node is sufficient; all ivpu ioctls including `IVPU_SUBMIT` are declared with flags `0` (no `DRM_ROOT_ONLY`, no `DRM_MASTER`), and distributions shipping the Intel NPU userspace stack grant the unprivileged `render` group access to `/dev/accel/accelN`. No real root or capability is needed.\nUI:N - The attacking process performs every step itself \u2014 submitting jobs, forcing autosuspend, and re-triggering resume through ioctls. No victim action such as mounting media or opening a file is required.\nS:U - The corruption and crash are confined to kernel memory managed by the ivpu driver within the same security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - When probe fails, `ivpu_dev_init()`'s error paths never call `ivpu_pm_cancel_recovery()`, so the queued `recovery_work` operates on the `devm`-freed `struct ivpu_device`, a use-after-free of a large heap object the attacker can spray and read back through `ivpu_dev_coredump()`/firmware-log paths, and the concurrent `ivpu_fw_load()`/`ivpu_bo_vaddr()` accesses read freed firmware buffers.\nI:H - The same use-after-free gives a write primitive \u2014 `ivpu_pm_recovery_work()` writes into the freed `vdev` (`atomic_inc(&vdev->pm->reset_counter)`, `down_write(&vdev->pm->reset_lock)`, `INIT`/list operations) and the concurrent `ivpu_suspend()`/`ivpu_resume()` on the same device state performs unsynchronized MMU and firmware-memory reinitialization, which is exploitable for heap corruption and control-flow hijack.\nA:H - The commit message explicitly states the race causes \"undefined behavior and kernel crashes due to null pointer dereferences\"; `ivpu_pm_prepare_warm_boot()` dereferences `ivpu_bo_vaddr(fw->mem)` after teardown, and recovery re-entering `pm_runtime_resume_and_get()` from inside a runtime PM callback while holding `reset_lock` can deadlock the device."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/accel/ivpu/ivpu_ipc.c", "drivers/accel/ivpu/ivpu_ipc.h", "drivers/accel/ivpu/ivpu_jsm_msg.c"], "versions": [{"version": "45e45362e0955fc3b0b622e8a0d788097f3de902", "lessThan": "cac822772c4dc27a285f09caf30072ab76d2bf38", "status": "affected", "versionType": "git"}, {"version": "45e45362e0955fc3b0b622e8a0d788097f3de902", "lessThan": "362ef76020ea6219a4df4ac5b738672b59527239", "status": "affected", "versionType": "git"}, {"version": "45e45362e0955fc3b0b622e8a0d788097f3de902", "lessThan": "5eaa497411197c41b0813d61ba3fbd6267049082", "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/accel/ivpu/ivpu_ipc.c", "drivers/accel/ivpu/ivpu_ipc.h", "drivers/accel/ivpu/ivpu_jsm_msg.c"], "versions": [{"version": "6.8", "status": "affected"}, {"version": "0", "lessThan": "6.8", "status": "unaffected", "versionType": "semver"}, {"version": "6.11.11", "lessThanOrEqual": "6.11.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.2", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.13", "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": "6.8", "versionEndExcluding": "6.11.11"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.8", "versionEndExcluding": "6.12.2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.8", "versionEndExcluding": "6.13"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/cac822772c4dc27a285f09caf30072ab76d2bf38"}, {"url": "https://git.kernel.org/stable/c/362ef76020ea6219a4df4ac5b738672b59527239"}, {"url": "https://git.kernel.org/stable/c/5eaa497411197c41b0813d61ba3fbd6267049082"}], "title": "accel/ivpu: Prevent recovery invocation during probe and resume", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.7, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2024-56540", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2025-10-01T20:02:29.458816Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-476", "description": "CWE-476 NULL Pointer Dereference"}]}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-10-01T20:07:16.787Z"}}]}}

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The previous approach of triggering recovery\nwithin these functions could lead to a race condition, potentially causing\nundefined behavior and kernel crashes due to null pointer dereferences."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: accel/ivpu: Evitar la invocaci\u00f3n de recuperaci\u00f3n durante la sonda y reanudaci\u00f3n Refactorizar las funciones de env\u00edo y recepci\u00f3n de IPC para permitir la gesti\u00f3n correcta de operaciones que no deber\u00edan activar un proceso de recuperaci\u00f3n. Exponer ivpu_send_receive_internal(), que ahora es utilizado por la entrada D0i3, la inicializaci\u00f3n de DCT y las funciones de inicializaci\u00f3n de HWS. Estas funciones se han modificado para devolver c\u00f3digos de error de forma elegante, en lugar de iniciar la recuperaci\u00f3n. Las funciones actualizadas se invocan dentro de ivpu_probe() e ivpu_resume(), lo que garantiza que cualquier error encontrado durante estas etapas d\u00e9 como resultado una secuencia de desmontaje o apagado adecuada. El enfoque anterior de activar la recuperaci\u00f3n dentro de estas funciones podr\u00eda conducir a una condici\u00f3n de ejecuci\u00f3n, lo que podr\u00eda causar un comportamiento indefinido y fallas del kernel debido a desreferencias de puntero nulo."}], "id": "CVE-2024-56540", "lastModified": "2026-08-04T11:22:09.210", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 4.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 4.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2024-56540", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2025-10-01T20:02:29.458816Z", "version": "2.0.3"}}]}, "published": "2024-12-27T14:15:33.670", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/362ef76020ea6219a4df4ac5b738672b59527239"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5eaa497411197c41b0813d61ba3fbd6267049082"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/cac822772c4dc27a285f09caf30072ab76d2bf38"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-362"}, {"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-476"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: accel/ivpu: Prevent recovery invocation during probe and resume", "id": "2334507", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2334507"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.7", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-476", "details": ["In the Linux kernel, the following vulnerability has been resolved:\naccel/ivpu: Prevent recovery invocation during probe and resume\nRefactor IPC send and receive functions to allow correct\nhandling of operations that should not trigger a recovery process.\nExpose ivpu_send_receive_internal(), which is now utilized by the D0i3\nentry, DCT initialization, and HWS initialization functions.\nThese functions have been modified to return error codes gracefully,\nrather than initiating recovery.\nThe updated functions are invoked within ivpu_probe() and ivpu_resume(),\nensuring that any errors encountered during these stages result in a proper\nteardown or shutdown sequence. The previous approach of triggering recovery\nwithin these functions could lead to a race condition, potentially causing\nundefined behavior and kernel crashes due to null pointer dereferences."], "name": "CVE-2024-56540", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-12-27T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-56540\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-56540\nhttps://lore.kernel.org/linux-cve-announce/2024122726-CVE-2024-56540-d2f7@gregkh/T"], "threat_severity": "Moderate"}

{}