CVE-2026-53202

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Large unsigned values\n(>= 0x80000000) become negative, causing unsigned wraparound and\noversized memcpy operations that can overflow the stack buffer.\n\nChange min_t(int, ...) to min() as both values are unsigned and can be\nhandled by min() without explicit cast."}], "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 IPC receive path is reached through local DRM/accel device operations and driver-triggered JSM IPC responses, not through network or adjacent protocols.\nAC:L - Triggering the vulnerable copy requires a malformed firmware IPC response with a large data_size, but there is no race or external timing condition once such a response is induced; when uncertain, the lower complexity is chosen.\nPR:L - The ivpu accel ioctls require local access to the accelerator device file but no CAP_SYS_ADMIN, DRM master, or other kernel capability checks were found on the relevant paths.\nUI:N - The attacker can open the device and issue ioctls or submit work directly; no separate victim action is required.\nS:U - The corruption affects the kernel driver/host kernel within the same security authority and does not by itself cross a VM, sandbox, or IOMMU security boundary.\nC:H - The signed truncation can turn firmware-controlled data_size into an oversized memcpy into a stack vpu_jsm_msg buffer, creating kernel memory corruption that can plausibly be leveraged for information disclosure.\nI:H - The bug is an out-of-bounds stack write from an attacker-influenced firmware IPC buffer, which is defensibly exploitable for kernel control-flow or data integrity compromise.\nA:H - Even without reliable code execution, the oversized kernel memcpy can corrupt the stack or fault while reading/writing far beyond the buffers, causing an oops or panic."}]}], "affected": [{"product": "Linux", "vendor": "Linux", 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A local attacker could exploit a signed integer truncation vulnerability in the Inter-Process Communication (IPC) receive path. This flaw occurs when a firmware-supplied data size is incorrectly converted, leading to an oversized memory copy operation that can overflow a kernel stack buffer. 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To blacklist the module, create a file named `/etc/modprobe.d/blacklist-ivpu.conf` with the following content:\n\n```\nblacklist ivpu\n```\n\nAfter creating the file, regenerate the initramfs and reboot the system for the changes to take effect. 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when uncertain, the lower complexity is chosen.\nPR:L - The ivpu accel ioctls require local access to the accelerator device file but no CAP_SYS_ADMIN, DRM master, or other kernel capability checks were found on the relevant paths.\nUI:N - The attacker can open the device and issue ioctls or submit work directly; no separate victim action is required.\nS:U - The corruption affects the kernel driver/host kernel within the same security authority and does not by itself cross a VM, sandbox, or IOMMU security boundary.\nC:H - The signed truncation can turn firmware-controlled data_size into an oversized memcpy into a stack vpu_jsm_msg buffer, creating kernel memory corruption that can plausibly be leveraged for information disclosure.\nI:H - The bug is an out-of-bounds stack write from an attacker-influenced firmware IPC buffer, which is defensibly exploitable for kernel control-flow or data integrity compromise.\nA:H - Even without reliable code execution, the oversized kernel memcpy can corrupt the stack or fault while reading/writing far beyond the buffers, causing an oops or panic."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "3b434a3445fff3149128db0169da864d67057325", "lessThan": "4788556d4dd9d717037e385de178974e9649231d", "versionType": "git"}, {"status": "affected", "version": "3b434a3445fff3149128db0169da864d67057325", "lessThan": "45cb105b8642c65e9be286f7058e92314efe7ea3", "versionType": "git"}, {"status": "affected", "version": "3b434a3445fff3149128db0169da864d67057325", "lessThan": "2821bf2b79e47f87e1dbdd9d25c78240965a97d6", "versionType": "git"}, {"status": "affected", "version": "3b434a3445fff3149128db0169da864d67057325", "lessThan": "d9faef564438d1e4579c692c046603e7ada7bdf4", "versionType": "git"}], "programFiles": ["drivers/accel/ivpu/ivpu_ipc.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.8"}, {"status": "unaffected", "version": "0", "lessThan": "6.8", "versionType": "semver"}, {"status": "unaffected", "version": "6.12.94", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.36", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.0.13", "versionType": "semver", "lessThanOrEqual": "7.0.*"}, {"status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/accel/ivpu/ivpu_ipc.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/4788556d4dd9d717037e385de178974e9649231d"}, {"url": "https://git.kernel.org/stable/c/45cb105b8642c65e9be286f7058e92314efe7ea3"}, {"url": "https://git.kernel.org/stable/c/2821bf2b79e47f87e1dbdd9d25c78240965a97d6"}, {"url": "https://git.kernel.org/stable/c/d9faef564438d1e4579c692c046603e7ada7bdf4"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\naccel/ivpu: Fix signed integer truncation in IPC receive\n\nFix potential buffer overflow where firmware-supplied data_size is cast\nto signed int before being used in min_t(). Large unsigned values\n(>= 0x80000000) become negative, causing unsigned wraparound and\noversized memcpy operations that can overflow the stack buffer.\n\nChange min_t(int, ...) to min() as both values are unsigned and can be\nhandled by min() without explicit cast."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.94", "versionStartIncluding": "6.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.36", "versionStartIncluding": "6.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.0.13", "versionStartIncluding": "6.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.1", "versionStartIncluding": "6.8"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:34:06.087Z"}}}, "cveMetadata": {"cveId": "CVE-2026-53202", "state": "PUBLISHED", "dateUpdated": "2026-10-19T19:57:28.409Z", "dateReserved": "2026-06-09T07:44:35.391Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-06-25T08:39:10.287Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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