{"id":"CVE-2026-43498","state":"PUBLISHED","title":"accel/ivpu: Disallow re-exporting imported GEM objects","description":"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.","publishedAt":"2026-05-21T12:17:48.550Z","updatedAt":"2026-08-05T12:28:20.973Z","severity":{"score":7.8,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","source":"Linux"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"57557964b582238d5ee4b8538d1c4694f91c2186","status":"affected","lessThan":"3756043dd695bba34cc728cdc5688dcb49ac8043","versionType":"git"},{"version":"57557964b582238d5ee4b8538d1c4694f91c2186","status":"affected","lessThan":"7dd57d7a6350770dfc283287125c409e995200e0","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/accel/ivpu/ivpu_drv.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.19","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.19","versionType":"semver"},{"version":"7.0.7","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/accel/ivpu/ivpu_drv.c"]}],"references":["https://git.kernel.org/stable/c/3756043dd695bba34cc728cdc5688dcb49ac8043","https://git.kernel.org/stable/c/7dd57d7a6350770dfc283287125c409e995200e0"],"weaknesses":[],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/43xxx/CVE-2026-43498.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-43498","state":"PUBLISHED","datePublished":"2026-05-21T12:17:48.550Z","dateUpdated":"2026-08-05T12:28:20.973Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-01T14:12:56.014Z"},"containers":{"cna":{"title":"accel/ivpu: Disallow re-exporting imported GEM objects","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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"57557964b582238d5ee4b8538d1c4694f91c2186","status":"affected","lessThan":"3756043dd695bba34cc728cdc5688dcb49ac8043","versionType":"git"},{"version":"57557964b582238d5ee4b8538d1c4694f91c2186","status":"affected","lessThan":"7dd57d7a6350770dfc283287125c409e995200e0","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/accel/ivpu/ivpu_drv.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.19","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.19","versionType":"semver"},{"version":"7.0.7","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/accel/ivpu/ivpu_drv.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/3756043dd695bba34cc728cdc5688dcb49ac8043"},{"url":"https://git.kernel.org/stable/c/7dd57d7a6350770dfc283287125c409e995200e0"}],"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—only 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."}]}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-05T12:28:20.973Z"},"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"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}