GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2026-74380 (GCVE-0-2026-74380)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:58 – Updated: 2026-08-17 05:46
VLAI
Title
gpu: host1x: Fix iommu_map_sgtable() return value check
Summary
In the Linux kernel, the following vulnerability has been resolved: gpu: host1x: Fix iommu_map_sgtable() return value check Commit "iommu: return full error code from iommu_map_sg[_atomic]()" changed iommu_map_sgtable() to return an ssize_t and negative values in error cases, rather than a size_t and a zero. pin_job() also was incorrectly assigning to 'int', which could cause overflows into negative values. Update pin_job() to correctly check for errors from iommu_map_sgtable.
Severity
8.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b , < 5f3985c2a500df3126cb12a2e0ccf26a40bc495d (git)
Affected: ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b , < 3ac173e46ef6fda9c9df8d47cdff4df962df9728 (git)
Affected: ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b , < 2a68928c445138961e2c451983b473aeb3f5b999 (git)
Affected: ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b , < 79240eee5a40014d9edfabe19f06b35ffa84e5f8 (git)
Affected: ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b , < e024c7993d839503d6c1f0044b8fc537c30300e9 (git)
Affected: ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b , < 18f74762013a4b6aa6f905c4459e0f506f9c5c7b (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.15
Unaffected: 0 , < 5.15 (semver)
Unaffected: 6.1.178 , ≤ 6.1.* (semver)
Unaffected: 6.6.145 , ≤ 6.6.* (semver)
Unaffected: 6.12.97 , ≤ 6.12.* (semver)
Unaffected: 6.18.40 , ≤ 6.18.* (semver)
Unaffected: 7.1.5 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "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"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.178",
                  "versionStartIncluding": "5.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.145",
                  "versionStartIncluding": "5.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.97",
                  "versionStartIncluding": "5.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.40",
                  "versionStartIncluding": "5.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.5",
                  "versionStartIncluding": "5.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "5.15",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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 \u0027int\u0027, which could cause\noverflows into negative values.\n\nUpdate pin_job() to correctly check for errors from iommu_map_sgtable."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          },
          "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."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T05:46:31.945Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "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"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-74380",
    "datePublished": "2026-08-15T05:58:57.706Z",
    "dateReserved": "2026-08-15T05:44:03.890Z",
    "dateUpdated": "2026-08-17T05:46:31.945Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-74380",
      "date": "2026-09-04",
      "epss": "0.00129",
      "percentile": "0.02878"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-74380\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-08-15T06:22:39.820\",\"lastModified\":\"2026-08-17T06:19:32.857\",\"vulnStatus\":\"Received\",\"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 \u0027int\u0027, which could cause\\noverflows into negative values.\\n\\nUpdate pin_job() to correctly check for errors from iommu_map_sgtable.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/gpu/host1x/job.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b\",\"lessThan\":\"5f3985c2a500df3126cb12a2e0ccf26a40bc495d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b\",\"lessThan\":\"3ac173e46ef6fda9c9df8d47cdff4df962df9728\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b\",\"lessThan\":\"2a68928c445138961e2c451983b473aeb3f5b999\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b\",\"lessThan\":\"79240eee5a40014d9edfabe19f06b35ffa84e5f8\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b\",\"lessThan\":\"e024c7993d839503d6c1f0044b8fc537c30300e9\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b\",\"lessThan\":\"18f74762013a4b6aa6f905c4459e0f506f9c5c7b\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/gpu/host1x/job.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.15\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.15\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.178\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.145\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.97\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.40\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.5\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"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\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.0,\"impactScore\":6.0}]},\"references\":[{\"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\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-08-19T10:02:50+00:00",
      "cve": "CVE-2026-74380",
      "id": "CVE-2026-74380",
      "initial_release_date": "2026-08-15T00:00:00+00:00",
      "product_status:known_affected": "184",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: gpu: host1x: Fix iommu_map_sgtable() return value check",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-74380.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.