{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-64153", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T07:54:57.038Z", "datePublished": "2026-07-19T15:40:42.102Z", "dateUpdated": "2026-08-05T12:39:48.053Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:39:48.053Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/msm: Fix iommu_map_sgtable() return value check and avoid WARN\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\nStore the return value in the appropriate type and in case of error,\nreturn it rather than WARNing.\n\nPatchwork: https://patchwork.freedesktop.org/patch/719685/" } ], "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 reached only through local DRM interfaces on Qualcomm devices: MSM_GEM_SUBMIT and framebuffer/atomic display commits pin GEM buffers into the display or legacy kernel-managed GPU IOMMU domain via ioctl on /dev/dri/renderD* or /dev/dri/card*.\nAC:L - An attacker can reliably force iommu_map_sgtable() failures by exhausting IOMMU page-table space or memory through repeated GEM allocations and mapping operations they fully control, without depending on victim timing or uncontrollable layout.\nPR:L - Exploitation requires only unprivileged access to the DRM render/display node (DRM_RENDER_ALLOW ioctls); on Android phones any app with GPU access can trigger the mapping path without root or special capabilities.\nUI:N - No victim interaction is required beyond the attacker's own DRM/GPU or framebuffer operations; the vulnerable msm_iommu_map() runs during their own buffer pin/map requests.\nS:C - Incorrect handling of IOMMU mapping errors can leave the display engine or Adreno GPU operating on IOVAs without the intended translation, crossing the IOMMU/DMA security boundary between device DMA and system physical memory.\nC:H - If a failed IOMMU mapping is treated as successful, GPU or display DMA can read physical pages outside the intended buffer, enabling arbitrary physical memory disclosure; this is the same error-sign-conversion class that caused silent mapping failure in the parallel tegra fix.\nI:H - A successful-but-unmapped or mis-mapped IOVA lets the GPU (IOMMU_WRITE on typical buffers) or display write-back path corrupt physical memory outside the caller's GEM object, providing a DMA-based write primitive.\nA:H - Repeated IOMMU mapping failures mishandled on the display or GPU path can cause IOMMU fault storms, GPU hangs, display pipeline stalls, or kernel WARN/oops conditions during fault handling." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/gpu/drm/msm/msm_iommu.c" ], "versions": [ { "version": "ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b", "lessThan": "3c2cdb7c07f664b77e2a75b50793b845d5742efa", "status": "affected", "versionType": "git" }, { "version": "ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b", "lessThan": "3e3c3c95ef4fe17231a9149e27bcfc9dae2dd89f", "status": "affected", "versionType": "git" }, { "version": "ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b", "lessThan": "7256e54583aee21e23929e7554278c2f5c1a08b1", "status": "affected", "versionType": "git" }, { "version": "ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b", "lessThan": "3457807aeb88077712f0a7cb65c3ca5120773d75", "status": "affected", "versionType": "git" }, { "version": "ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b", "lessThan": "f4e37f3df436c2bdd2621c21f9c72c8f149a221d", "status": "affected", "versionType": "git" }, { "version": "ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b", "lessThan": "3a45af37733446e114bf19b0209fe7d8089bdb8b", "status": "affected", "versionType": "git" }, { "version": "ad8f36e4b6b1c826a0daa5fda2c5839205b5aa8b", "lessThan": "55e0f0d1c1a4ee1e46da7da4d443eb3044fb3851", "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/drm/msm/msm_iommu.c" ], "versions": [ { "version": "5.15", "status": "affected" }, { "version": "0", "lessThan": "5.15", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.209", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.175", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.142", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.92", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.34", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.0.11", "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": "5.15", "versionEndExcluding": "5.15.209" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.1.175" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.6.142" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.12.92" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.18.34" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "7.0.11" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "7.1" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/3c2cdb7c07f664b77e2a75b50793b845d5742efa" }, { "url": "https://git.kernel.org/stable/c/3e3c3c95ef4fe17231a9149e27bcfc9dae2dd89f" }, { "url": "https://git.kernel.org/stable/c/7256e54583aee21e23929e7554278c2f5c1a08b1" }, { "url": "https://git.kernel.org/stable/c/3457807aeb88077712f0a7cb65c3ca5120773d75" }, { "url": "https://git.kernel.org/stable/c/f4e37f3df436c2bdd2621c21f9c72c8f149a221d" }, { "url": "https://git.kernel.org/stable/c/3a45af37733446e114bf19b0209fe7d8089bdb8b" }, { "url": "https://git.kernel.org/stable/c/55e0f0d1c1a4ee1e46da7da4d443eb3044fb3851" } ], "title": "drm/msm: Fix iommu_map_sgtable() return value check and avoid WARN", "x_generator": { "engine": "bippy-1.2.0" } } } }