{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2022-50390", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-09-17T14:53:06.998Z", "datePublished": "2025-09-18T13:33:10.073Z", "dateUpdated": "2026-05-11T19:18:36.604Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:18:36.604Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/ttm: fix undefined behavior in bit shift for TTM_TT_FLAG_PRIV_POPULATED\n\nShifting signed 32-bit value by 31 bits is undefined, so changing\nsignificant bit to unsigned. The UBSAN warning calltrace like below:\n\nUBSAN: shift-out-of-bounds in ./include/drm/ttm/ttm_tt.h:122:26\nleft shift of 1 by 31 places cannot be represented in type 'int'\nCall Trace:\n \n dump_stack_lvl+0x7d/0xa5\n dump_stack+0x15/0x1b\n ubsan_epilogue+0xe/0x4e\n __ubsan_handle_shift_out_of_bounds+0x1e7/0x20c\n ttm_bo_move_memcpy+0x3b4/0x460 [ttm]\n bo_driver_move+0x32/0x40 [drm_vram_helper]\n ttm_bo_handle_move_mem+0x118/0x200 [ttm]\n ttm_bo_validate+0xfa/0x220 [ttm]\n drm_gem_vram_pin_locked+0x70/0x1b0 [drm_vram_helper]\n drm_gem_vram_pin+0x48/0xb0 [drm_vram_helper]\n drm_gem_vram_plane_helper_prepare_fb+0x53/0xe0 [drm_vram_helper]\n drm_gem_vram_simple_display_pipe_prepare_fb+0x26/0x30 [drm_vram_helper]\n drm_simple_kms_plane_prepare_fb+0x4d/0xe0 [drm_kms_helper]\n drm_atomic_helper_prepare_planes+0xda/0x210 [drm_kms_helper]\n drm_atomic_helper_commit+0xc3/0x1e0 [drm_kms_helper]\n drm_atomic_commit+0x9c/0x160 [drm]\n drm_client_modeset_commit_atomic+0x33a/0x380 [drm]\n drm_client_modeset_commit_locked+0x77/0x220 [drm]\n drm_client_modeset_commit+0x31/0x60 [drm]\n __drm_fb_helper_restore_fbdev_mode_unlocked+0xa7/0x170 [drm_kms_helper]\n drm_fb_helper_set_par+0x51/0x90 [drm_kms_helper]\n fbcon_init+0x316/0x790\n visual_init+0x113/0x1d0\n do_bind_con_driver+0x2a3/0x5c0\n do_take_over_console+0xa9/0x270\n do_fbcon_takeover+0xa1/0x170\n do_fb_registered+0x2a8/0x340\n fbcon_fb_registered+0x47/0xe0\n register_framebuffer+0x294/0x4a0\n __drm_fb_helper_initial_config_and_unlock+0x43c/0x880 [drm_kms_helper]\n drm_fb_helper_initial_config+0x52/0x80 [drm_kms_helper]\n drm_fbdev_client_hotplug+0x156/0x1b0 [drm_kms_helper]\n drm_fbdev_generic_setup+0xfc/0x290 [drm_kms_helper]\n bochs_pci_probe+0x6ca/0x772 [bochs]\n local_pci_probe+0x4d/0xb0\n pci_device_probe+0x119/0x320\n really_probe+0x181/0x550\n __driver_probe_device+0xc6/0x220\n driver_probe_device+0x32/0x100\n __driver_attach+0x195/0x200\n bus_for_each_dev+0xbb/0x120\n driver_attach+0x27/0x30\n bus_add_driver+0x22e/0x2f0\n driver_register+0xa9/0x190\n __pci_register_driver+0x90/0xa0\n bochs_pci_driver_init+0x52/0x1000 [bochs]\n do_one_initcall+0x76/0x430\n do_init_module+0x61/0x28a\n load_module+0x1f82/0x2e50\n __do_sys_finit_module+0xf8/0x190\n __x64_sys_finit_module+0x23/0x30\n do_syscall_64+0x58/0x80\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\n " } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "include/drm/ttm/ttm_tt.h" ], "versions": [ { "version": "3312be8f6fc8a8dc7cef01986dbd436eab7af0f7", "lessThan": "c4079a34c0adef9f35a16783fb13a9084406f96d", "status": "affected", "versionType": "git" }, { "version": "3312be8f6fc8a8dc7cef01986dbd436eab7af0f7", "lessThan": "2ff0309b73d86e8591881ac035af06e01c112e89", "status": "affected", "versionType": "git" }, { "version": "3312be8f6fc8a8dc7cef01986dbd436eab7af0f7", "lessThan": "6528971fdce0dfc0a28fec42c151a1eccdabadf5", "status": "affected", "versionType": "git" }, { "version": "3312be8f6fc8a8dc7cef01986dbd436eab7af0f7", "lessThan": "387659939c00156f8d6bab0fbc55b4eaf2b6bc5b", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "include/drm/ttm/ttm_tt.h" ], "versions": [ { "version": "5.10", "status": "affected" }, { "version": "0", "lessThan": "5.10", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.199", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.0.16", "lessThanOrEqual": "6.0.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.2", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.2", "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": "5.10", "versionEndExcluding": "5.15.199" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "6.0.16" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "6.1.2" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "6.2" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/c4079a34c0adef9f35a16783fb13a9084406f96d" }, { "url": "https://git.kernel.org/stable/c/2ff0309b73d86e8591881ac035af06e01c112e89" }, { "url": "https://git.kernel.org/stable/c/6528971fdce0dfc0a28fec42c151a1eccdabadf5" }, { "url": "https://git.kernel.org/stable/c/387659939c00156f8d6bab0fbc55b4eaf2b6bc5b" } ], "title": "drm/ttm: fix undefined behavior in bit shift for TTM_TT_FLAG_PRIV_POPULATED", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE" } }, { "other": { "type": "ssvc", "content": { "id": "CVE-2022-50390", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2026-01-14T18:50:13.515022Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "description": "CWE-noinfo Not enough information" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-01-14T18:53:05.285Z" } } ] } }