{"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"}}}}