{"id":"CVE-2026-64231","state":"PUBLISHED","title":"drm/msm/dsi: don't dump registers past the mapped region","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/msm/dsi: don't dump registers past the mapped region\n\nOn DSI 6G platforms the IO address space is internally adjusted by\nio_offset. Later this adjusted address might be used for memory dumping.\nHowever the size that is used for memory dumping isn't adjusted to\naccount for the io_offset, leading to the potential access to the\nunmapped region. Lower ctrl_size by the io_offset value to prevent\naccess past the mapped area.\n\n msm_disp_snapshot_add_block+0x1d4/0x3c8 [msm] (P)\n msm_dsi_host_snapshot+0x4c/0x78 [msm]\n msm_dsi_snapshot+0x28/0x50 [msm]\n msm_disp_snapshot_capture_state+0x74/0x140 [msm]\n msm_disp_snapshot_state_sync+0x60/0x90 [msm]\n _msm_disp_snapshot_work+0x30/0x90 [msm]\n kthread_worker_fn+0xdc/0x460\n kthread+0x120/0x140\n\nPatchwork: https://patchwork.freedesktop.org/patch/721747/","publishedAt":"2026-07-24T15:23:13.175Z","updatedAt":"2026-07-24T15:23:13.175Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"bac2c6a62ed91ba4f6c7c14a6a40b7c696b35645","status":"affected","lessThan":"5e2c196c3430fb94225c4102b1028d0146544761","versionType":"git"},{"version":"bac2c6a62ed91ba4f6c7c14a6a40b7c696b35645","status":"affected","lessThan":"567b5e976e2e15280d78c9ef2add1954a0bbb5b1","versionType":"git"},{"version":"bac2c6a62ed91ba4f6c7c14a6a40b7c696b35645","status":"affected","lessThan":"9f8274749d9010a1a72f97e547b7eb9ebb82345b","versionType":"git"},{"version":"bac2c6a62ed91ba4f6c7c14a6a40b7c696b35645","status":"affected","lessThan":"a184aec790135938b0fadb415e55accd1f8685a0","versionType":"git"},{"version":"bac2c6a62ed91ba4f6c7c14a6a40b7c696b35645","status":"affected","lessThan":"ab871d5882953e5574ae2bc47bec88c2e3d22663","versionType":"git"},{"version":"bac2c6a62ed91ba4f6c7c14a6a40b7c696b35645","status":"affected","lessThan":"5b49a46baa853b26dbefa65c6c75dd9ff69f63d4","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/msm/dsi/dsi_host.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.14","versionType":"semver"},{"version":"6.1.175","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.142","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.92","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.34","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.11","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/gpu/drm/msm/dsi/dsi_host.c"]}],"references":["https://git.kernel.org/stable/c/5e2c196c3430fb94225c4102b1028d0146544761","https://git.kernel.org/stable/c/567b5e976e2e15280d78c9ef2add1954a0bbb5b1","https://git.kernel.org/stable/c/9f8274749d9010a1a72f97e547b7eb9ebb82345b","https://git.kernel.org/stable/c/a184aec790135938b0fadb415e55accd1f8685a0","https://git.kernel.org/stable/c/ab871d5882953e5574ae2bc47bec88c2e3d22663","https://git.kernel.org/stable/c/5b49a46baa853b26dbefa65c6c75dd9ff69f63d4"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:41.951Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/64xxx/CVE-2026-64231.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-64231","state":"PUBLISHED","datePublished":"2026-07-24T15:23:13.175Z","dateUpdated":"2026-07-24T15:23:13.175Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-07-19T15:36:31.771Z"},"containers":{"cna":{"title":"drm/msm/dsi: don't dump registers past the mapped region","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/msm/dsi: don't dump registers past the mapped region\n\nOn DSI 6G platforms the IO address space is internally adjusted by\nio_offset. Later this adjusted address might be used for memory dumping.\nHowever the size that is used for memory dumping isn't adjusted to\naccount for the io_offset, leading to the potential access to the\nunmapped region. Lower ctrl_size by the io_offset value to prevent\naccess past the mapped area.\n\n msm_disp_snapshot_add_block+0x1d4/0x3c8 [msm] (P)\n msm_dsi_host_snapshot+0x4c/0x78 [msm]\n msm_dsi_snapshot+0x28/0x50 [msm]\n msm_disp_snapshot_capture_state+0x74/0x140 [msm]\n msm_disp_snapshot_state_sync+0x60/0x90 [msm]\n _msm_disp_snapshot_work+0x30/0x90 [msm]\n kthread_worker_fn+0xdc/0x460\n kthread+0x120/0x140\n\nPatchwork: https://patchwork.freedesktop.org/patch/721747/"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"bac2c6a62ed91ba4f6c7c14a6a40b7c696b35645","status":"affected","lessThan":"5e2c196c3430fb94225c4102b1028d0146544761","versionType":"git"},{"version":"bac2c6a62ed91ba4f6c7c14a6a40b7c696b35645","status":"affected","lessThan":"567b5e976e2e15280d78c9ef2add1954a0bbb5b1","versionType":"git"},{"version":"bac2c6a62ed91ba4f6c7c14a6a40b7c696b35645","status":"affected","lessThan":"9f8274749d9010a1a72f97e547b7eb9ebb82345b","versionType":"git"},{"version":"bac2c6a62ed91ba4f6c7c14a6a40b7c696b35645","status":"affected","lessThan":"a184aec790135938b0fadb415e55accd1f8685a0","versionType":"git"},{"version":"bac2c6a62ed91ba4f6c7c14a6a40b7c696b35645","status":"affected","lessThan":"ab871d5882953e5574ae2bc47bec88c2e3d22663","versionType":"git"},{"version":"bac2c6a62ed91ba4f6c7c14a6a40b7c696b35645","status":"affected","lessThan":"5b49a46baa853b26dbefa65c6c75dd9ff69f63d4","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/msm/dsi/dsi_host.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.14","versionType":"semver"},{"version":"6.1.175","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.142","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.92","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.34","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.11","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/gpu/drm/msm/dsi/dsi_host.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/5e2c196c3430fb94225c4102b1028d0146544761"},{"url":"https://git.kernel.org/stable/c/567b5e976e2e15280d78c9ef2add1954a0bbb5b1"},{"url":"https://git.kernel.org/stable/c/9f8274749d9010a1a72f97e547b7eb9ebb82345b"},{"url":"https://git.kernel.org/stable/c/a184aec790135938b0fadb415e55accd1f8685a0"},{"url":"https://git.kernel.org/stable/c/ab871d5882953e5574ae2bc47bec88c2e3d22663"},{"url":"https://git.kernel.org/stable/c/5b49a46baa853b26dbefa65c6c75dd9ff69f63d4"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-07-24T15:23:13.175Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"6.1.175"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"6.6.142"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"6.12.92"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"6.18.34"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"7.0.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14","versionEndExcluding":"7.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}