CVE-2026-43498

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-43498", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-01T14:12:56.014Z", "datePublished": "2026-05-21T12:17:48.550Z", "dateUpdated": "2026-08-05T12:28:20.973Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:28:20.973Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\naccel/ivpu: Disallow re-exporting imported GEM objects\n\nPrevent re-exporting of imported GEM buffers by adding a custom\nprime_handle_to_fd callback that checks if the object is imported\nand returns -EOPNOTSUPP if so.\n\nRe-exporting imported GEM buffers causes loss of buffer flags settings,\nleading to incorrect device access and data corruption."}], "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 accel/ivpu NPU driver is reachable only through local `/dev/accel/accelX` ioctls (BO_CREATE_FROM_USERPTR, PRIME_HANDLE_TO_FD/FD_TO_HANDLE, SUBMIT); it is not network- or adjacent-facing.\nAC:L - The exploit is a fully attacker-controlled, deterministic sequence (create RO userptr BO, re-export, re-import losing the RO flag, submit a write job) with no race or uncontrolled memory-layout dependency.\nPR:L - No root or capability is required\u2014only access to the accel device node, which unprivileged local users typically hold on NPU-equipped systems; the ioctls carry no DRM_ROOT_ONLY/capable() gate.\nUI:N - The attacker performs every step (BO creation, re-export/re-import, NPU job submission) without any victim action.\nS:U - Impacted memory is all under the kernel's authority and the DMA/IOMMU isolation itself is not bypassed (pages are legitimately mapped, only the device-MMU read-only bit is dropped); this is standard in-OS privilege escalation.\nC:H - The resulting write primitive into shared read-only page-cache/executable pages can be leveraged for code execution in privileged contexts and thus arbitrary memory disclosure, and per guidance such memory corruption is scored High.\nI:H - The device, under attacker control, gains an arbitrary write into host pages that must be read-only (shared/file-backed/CoW pages), yielding controlled corruption of memory belonging to other contexts.\nA:H - Corrupting shared page-cache/executable pages or other processes' memory readily crashes processes and the system, a High availability impact consistent with memory-corruption guidance."}]}], "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_drv.c"], "versions": [{"version": "57557964b582238d5ee4b8538d1c4694f91c2186", "lessThan": "3756043dd695bba34cc728cdc5688dcb49ac8043", "status": "affected", "versionType": "git"}, {"version": "57557964b582238d5ee4b8538d1c4694f91c2186", "lessThan": "7dd57d7a6350770dfc283287125c409e995200e0", "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_drv.c"], "versions": [{"version": "6.19", "status": "affected"}, {"version": "0", "lessThan": "6.19", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.7", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "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": "6.19", "versionEndExcluding": "7.0.7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.19", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/3756043dd695bba34cc728cdc5688dcb49ac8043"}, {"url": "https://git.kernel.org/stable/c/7dd57d7a6350770dfc283287125c409e995200e0"}], "title": "accel/ivpu: Disallow re-exporting imported GEM objects", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/accel/ivpu/ivpu_drv.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "3756043dd695bba34cc728cdc5688dcb49ac8043", "status": "affected", "version": "57557964b582238d5ee4b8538d1c4694f91c2186", "versionType": "git"}, {"lessThan": "7dd57d7a6350770dfc283287125c409e995200e0", "status": "affected", "version": "57557964b582238d5ee4b8538d1c4694f91c2186", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/accel/ivpu/ivpu_drv.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.19"}, {"lessThan": "6.19", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "7.0.*", "status": "unaffected", "version": "7.0.7", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "D0893CA7-9AE6-4DFE-AC75-48967D73AD8E", "versionEndExcluding": "7.0.7", "versionStartIncluding": "6.19", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*", "matchCriteriaId": "B1EF7059-E670-45F4-B422-54C40FA86390", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*", "matchCriteriaId": "0D38F0BF-A728-4133-A358-D44A2F7EE6D6", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\naccel/ivpu: Disallow re-exporting imported GEM objects\n\nPrevent re-exporting of imported GEM buffers by adding a custom\nprime_handle_to_fd callback that checks if the object is imported\nand returns -EOPNOTSUPP if so.\n\nRe-exporting imported GEM buffers causes loss of buffer flags settings,\nleading to incorrect device access and data corruption."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\naccel/ivpu: Prohibir la reexportaci\u00f3n de objetos GEM importados\n\nSe evita la reexportaci\u00f3n de b\u00faferes GEM importados a\u00f1adiendo una funci\u00f3n de devoluci\u00f3n de llamada (callback) prime_handle_to_fd personalizada que verifica si el objeto es importado y devuelve -EOPNOTSUPP en ese caso.\n\nLa reexportaci\u00f3n de b\u00faferes GEM importados provoca la p\u00e9rdida de la configuraci\u00f3n de los indicadores del b\u00fafer, lo que lleva a un acceso incorrecto al dispositivo y a la corrupci\u00f3n de datos."}], "id": "CVE-2026-43498", "lastModified": "2026-07-23T16:10:00.137", "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"}]}, "published": "2026-05-21T13:16:19.200", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3756043dd695bba34cc728cdc5688dcb49ac8043"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7dd57d7a6350770dfc283287125c409e995200e0"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: accel/ivpu: Disallow re-exporting imported GEM objects", "id": "2480454", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2480454"}, "csaw": false, "cwe": "CWE-911", "details": ["A flaw was found in the Linux kernel's accel/ivpu module. This vulnerability allows for the re-exporting of imported Graphics Execution Manager (GEM) buffers. When these buffers are re-exported, it leads to a loss of their original flag settings, which can result in incorrect device access and potential data corruption."], "name": "CVE-2026-43498", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"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": "2026-05-21T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-43498\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-43498\nhttps://lore.kernel.org/linux-cve-announce/2026052158-CVE-2026-43498-6f90@gregkh/T"]}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[57557964b582238d5ee4b8538d1c4694f91c2186,3756043dd695bba34cc728cdc5688dcb49ac8043)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[57557964b582238d5ee4b8538d1c4694f91c2186,7dd57d7a6350770dfc283287125c409e995200e0)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "6.19"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.19)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0.7,7.1.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1-rc3,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-05-21T13:30:10.951023+00:00", "updated": "2026-08-13T23:45:16.808136+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-787", "CWE-911"]}