{"id":"CVE-2026-53057","state":"PUBLISHED","title":"iommu/riscv: Add IOTINVAL after updating DDT/PDT entries","description":"In the Linux kernel, the following vulnerability has been resolved:\n\niommu/riscv: Add IOTINVAL after updating DDT/PDT entries\n\nAdd riscv_iommu_iodir_iotinval() to perform required TLB and context cache\ninvalidations after updating DDT or PDT entries, as mandated by the RISC-V\nIOMMU specification (Section 6.3.1 and 6.3.2).","publishedAt":"2026-06-24T16:30:02.571Z","updatedAt":"2026-08-05T12:33:00.472Z","severity":{"score":8.8,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","source":"Linux"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"488ffbf181718b9ad8c1838cb249d60973e78eda","status":"affected","lessThan":"3f917d9bff68600f77561900f3145bd4706dc840","versionType":"git"},{"version":"488ffbf181718b9ad8c1838cb249d60973e78eda","status":"affected","lessThan":"d99d1c13faa793ff1abab0d20ab6473c838081b3","versionType":"git"},{"version":"488ffbf181718b9ad8c1838cb249d60973e78eda","status":"affected","lessThan":"f5c262b544975e067ea265fc7403aefbbea8563e","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/iommu/riscv/iommu.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.13","versionType":"semver"},{"version":"6.18.33","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.10","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/iommu/riscv/iommu.c"]}],"references":["https://git.kernel.org/stable/c/3f917d9bff68600f77561900f3145bd4706dc840","https://git.kernel.org/stable/c/d99d1c13faa793ff1abab0d20ab6473c838081b3","https://git.kernel.org/stable/c/f5c262b544975e067ea265fc7403aefbbea8563e"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/53xxx/CVE-2026-53057.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-53057","state":"PUBLISHED","datePublished":"2026-06-24T16:30:02.571Z","dateUpdated":"2026-08-05T12:33:00.472Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-06-09T07:44:35.381Z"},"containers":{"cna":{"title":"iommu/riscv: Add IOTINVAL after updating DDT/PDT entries","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\niommu/riscv: Add IOTINVAL after updating DDT/PDT entries\n\nAdd riscv_iommu_iodir_iotinval() to perform required TLB and context cache\ninvalidations after updating DDT or PDT entries, as mandated by the RISC-V\nIOMMU specification (Section 6.3.1 and 6.3.2)."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"488ffbf181718b9ad8c1838cb249d60973e78eda","status":"affected","lessThan":"3f917d9bff68600f77561900f3145bd4706dc840","versionType":"git"},{"version":"488ffbf181718b9ad8c1838cb249d60973e78eda","status":"affected","lessThan":"d99d1c13faa793ff1abab0d20ab6473c838081b3","versionType":"git"},{"version":"488ffbf181718b9ad8c1838cb249d60973e78eda","status":"affected","lessThan":"f5c262b544975e067ea265fc7403aefbbea8563e","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/iommu/riscv/iommu.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.13","versionType":"semver"},{"version":"6.18.33","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.10","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/iommu/riscv/iommu.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/3f917d9bff68600f77561900f3145bd4706dc840"},{"url":"https://git.kernel.org/stable/c/d99d1c13faa793ff1abab0d20ab6473c838081b3"},{"url":"https://git.kernel.org/stable/c/f5c262b544975e067ea265fc7403aefbbea8563e"}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","baseScore":8.8,"baseSeverity":"HIGH"},"scenarios":[{"lang":"en","value":"AV:L - The vulnerable RISC-V IOMMU path is reached through local device/IOMMU management flows such as VFIO/iommufd domain attach, detach, or replacement for DMA-capable devices. It is not directly reachable from network packets.\nAC:L - An attacker controlling an assigned DMA-capable device can prepopulate translation caches and trigger domain changes without needing to win an uncontrollable race. The bug is a missing required invalidation after DDT/PDT updates.\nPR:L - Exploitation requires local access to a DMA-capable device or delegated VFIO/iommufd device ownership, which is commonly granted to non-root users or guest workloads. It does not require real init-namespace root once that device access exists.\nUI:N - No separate victim action is required after the attacker has device access. The attacker can trigger DMA and domain transitions directly through the local device management path.\nS:C - This is an IOMMU/DMA isolation failure, so stale translations can cross the intended device, guest, or host memory protection boundary. Kernel guidance treats IOMMU/DMA boundary bypass as scope changed.\nC:H - Stale DDT/PDT-derived translations can allow a device to DMA-read memory belonging to a previous or different protection domain. In the severe reasonable VFIO or passthrough scenario, this can expose arbitrary host or other-guest memory.\nI:H - The same stale translations can permit DMA writes outside the attacker's assigned domain. That can corrupt host or other-guest memory and potentially alter privileged state.\nA:H - Unauthorized DMA writes or stale-domain DMA after blocking/detach can corrupt critical memory and crash or hang the host or victim workload. Repeated triggering is feasible through local device control."}]}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-05T12:33:00.472Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"6.18.33"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"7.0.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"7.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}