{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-74380", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-15T05:44:03.890Z", "datePublished": "2026-08-15T05:58:57.706Z", "dateUpdated": "2026-08-17T05:46:31.945Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T05:46:31.945Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngpu: host1x: Fix iommu_map_sgtable() return value check\n\nCommit \"iommu: return full error code from iommu_map_sg[_atomic]()\"\nchanged iommu_map_sgtable() to return an ssize_t and negative values\nin error cases, rather than a size_t and a zero.\n\npin_job() also was incorrectly assigning to 'int', which could cause\noverflows into negative values.\n\nUpdate pin_job() to correctly check for errors from iommu_map_sgtable."}], "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 bug is in host1x pin_job() reached from tegra DRM TEGRA_CHANNEL_SUBMIT ioctls on /dev/dri/renderD*, requiring local access to the GPU render node on Tegra/Jetson, automotive, and embedded platforms.\nAC:L - An attacker with render-node access can reliably submit host1x jobs and force iommu_map_sgtable() failures (e.g., via memory/IOVA pressure or alignment edge cases); no victim-controlled race or rare configuration is required.\nPR:L - Exploitation needs only unprivileged access to the DRM render node, which is commonly granted to local users and containerized GPU workloads on Tegra124+ systems with host1x IOMMU enabled; no real-root capability is required.\nUI:N - Triggering the flaw is fully programmatic through DRM ioctls and host1x job submission; no additional victim interaction such as plugging devices or mounting filesystems is needed.\nS:C - When iommu_map_sgtable() fails, the driver still programs host1x/GPU gather DMA with an IOVA lacking a valid IOMMU mapping, breaking the IOMMU/DMA isolation boundary between device DMA and system physical memory.\nC:H - Proceeding without a valid IOMMU translation lets host1x fetch gather/command streams via an unmapped IOVA, enabling GPU DMA reads outside the intended buffer and potential disclosure of unintended physical memory depending on SMMU fault behavior.\nI:H - Corrupted or attacker-influenced gather fetches can drive subsequent host1x client engines to perform unintended DMA writes; failed IOMMU setup removes the mapping that was meant to confine GPU memory access.\nA:H - Submitting jobs with unmapped IOVAs causes IOMMU faults, GPU/host1x hangs or timeouts, and potential kernel oops/panic on affected Tegra systems, yielding a repeatable local denial of service."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/gpu/host1x/job.c"], "versions": [{"version": "ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b", "lessThan": "5f3985c2a500df3126cb12a2e0ccf26a40bc495d", "status": "affected", "versionType": "git"}, {"version": "ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b", "lessThan": "3ac173e46ef6fda9c9df8d47cdff4df962df9728", "status": "affected", "versionType": "git"}, {"version": "ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b", "lessThan": "2a68928c445138961e2c451983b473aeb3f5b999", "status": "affected", "versionType": "git"}, {"version": "ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b", "lessThan": "79240eee5a40014d9edfabe19f06b35ffa84e5f8", "status": "affected", "versionType": "git"}, {"version": "ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b", "lessThan": "e024c7993d839503d6c1f0044b8fc537c30300e9", "status": "affected", "versionType": "git"}, {"version": "ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b", "lessThan": "18f74762013a4b6aa6f905c4459e0f506f9c5c7b", "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/gpu/host1x/job.c"], "versions": [{"version": "5.15", "status": "affected"}, {"version": "0", "lessThan": "5.15", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.178", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.145", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.97", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.40", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.5", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "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": "5.15", "versionEndExcluding": "6.1.178"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.6.145"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.12.97"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.18.40"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "7.1.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/5f3985c2a500df3126cb12a2e0ccf26a40bc495d"}, {"url": "https://git.kernel.org/stable/c/3ac173e46ef6fda9c9df8d47cdff4df962df9728"}, {"url": "https://git.kernel.org/stable/c/2a68928c445138961e2c451983b473aeb3f5b999"}, {"url": "https://git.kernel.org/stable/c/79240eee5a40014d9edfabe19f06b35ffa84e5f8"}, {"url": "https://git.kernel.org/stable/c/e024c7993d839503d6c1f0044b8fc537c30300e9"}, {"url": "https://git.kernel.org/stable/c/18f74762013a4b6aa6f905c4459e0f506f9c5c7b"}], "title": "gpu: host1x: Fix iommu_map_sgtable() return value check", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/gpu/host1x/job.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "5f3985c2a500df3126cb12a2e0ccf26a40bc495d", "status": "affected", "version": "ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b", "versionType": "git"}, {"lessThan": "3ac173e46ef6fda9c9df8d47cdff4df962df9728", "status": "affected", "version": "ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b", "versionType": "git"}, {"lessThan": "2a68928c445138961e2c451983b473aeb3f5b999", "status": "affected", "version": "ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b", "versionType": "git"}, {"lessThan": "79240eee5a40014d9edfabe19f06b35ffa84e5f8", "status": "affected", "version": "ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b", "versionType": "git"}, {"lessThan": "e024c7993d839503d6c1f0044b8fc537c30300e9", "status": "affected", "version": "ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b", "versionType": "git"}, {"lessThan": "18f74762013a4b6aa6f905c4459e0f506f9c5c7b", "status": "affected", "version": "ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/gpu/host1x/job.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.15"}, {"lessThan": "5.15", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.178", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.145", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.97", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.40", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.5", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngpu: host1x: Fix iommu_map_sgtable() return value check\n\nCommit \"iommu: return full error code from iommu_map_sg[_atomic]()\"\nchanged iommu_map_sgtable() to return an ssize_t and negative values\nin error cases, rather than a size_t and a zero.\n\npin_job() also was incorrectly assigning to 'int', which could cause\noverflows into negative values.\n\nUpdate pin_job() to correctly check for errors from iommu_map_sgtable."}], "id": "CVE-2026-74380", "lastModified": "2026-08-17T06:19:32.857", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.0, "impactScore": 6.0, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-08-15T06:22:39.820", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/18f74762013a4b6aa6f905c4459e0f506f9c5c7b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2a68928c445138961e2c451983b473aeb3f5b999"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3ac173e46ef6fda9c9df8d47cdff4df962df9728"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5f3985c2a500df3126cb12a2e0ccf26a40bc495d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/79240eee5a40014d9edfabe19f06b35ffa84e5f8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e024c7993d839503d6c1f0044b8fc537c30300e9"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: gpu: host1x: Fix iommu_map_sgtable() return value check", "id": "2516798", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516798"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-190", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ngpu: host1x: Fix iommu_map_sgtable() return value check\nCommit \"iommu: return full error code from iommu_map_sg[_atomic]()\"\nchanged iommu_map_sgtable() to return an ssize_t and negative values\nin error cases, rather than a size_t and a zero.\npin_job() also was incorrectly assigning to 'int', which could cause\noverflows into negative values.\nUpdate pin_job() to correctly check for errors from iommu_map_sgtable.", "A flaw was found in the Linux kernel's host1x GPU driver. An incorrect return value check in the `iommu_map_sgtable()` function, coupled with an improper integer assignment in `pin_job()`, could lead to negative value overflows. This vulnerability may result in data integrity issues or system instability within the GPU memory management subsystem."], "name": "CVE-2026-74380", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "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": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-74380\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-74380\nhttps://lore.kernel.org/linux-cve-announce/2026081505-CVE-2026-74380-1dbd@gregkh/T"], "threat_severity": "Low"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b,5f3985c2a500df3126cb12a2e0ccf26a40bc495d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b,3ac173e46ef6fda9c9df8d47cdff4df962df9728)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b,2a68928c445138961e2c451983b473aeb3f5b999)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b,79240eee5a40014d9edfabe19f06b35ffa84e5f8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b,e024c7993d839503d6c1f0044b8fc537c30300e9)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b,18f74762013a4b6aa6f905c4459e0f506f9c5c7b)"}}], "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": "5.15"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,5.15)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.178,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.145,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.97,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.40,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.5,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc1,*]"}}], "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": "2026-08-15T17:00:12.632502+00:00", "updated": "2026-08-22T01:30:17.267484+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}