{"api_version":"1","generated_at":"2026-11-10T03:52:53+00:00","cve":"CVE-2026-99007","urls":{"html":"https://cve.report/CVE-2026-99007","api":"https://cve.report/api/cve/CVE-2026-99007.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-99007","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-99007"},"summary":{"title":"drm/fb-helper: defer setup when fbdev_probe() fails, not just on -EAGAIN","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/fb-helper: defer setup when fbdev_probe() fails, not just on -EAGAIN\n\n__drm_fb_helper_initial_config_and_unlock() calls\ndrm_client_modeset_probe() first, which already fills in each\nmode_set->mode/num_connectors for every connected output, and only\nafterwards calls drm_fb_helper_single_fb_probe() to create\nfb_helper->fb and wire it into those mode_sets via\ndrm_setup_crtcs_fb().\n\nIf drm_fb_helper_single_fb_probe() fails with anything other than\n-EAGAIN (e.g. dev->driver->fbdev_probe() itself fails), the function\nbails out before drm_setup_crtcs_fb() runs and before setting\nfb_helper->deferred_setup. The client is left with mode_sets that\nhave a mode and connectors but mode_set->fb == NULL, and nothing\nmarks this fb_helper as needing a retry.\n\n__drm_fb_helper_restore_fbdev_mode_unlocked() only skips committing\nwhen fb_helper->deferred_setup is set, so a later .restore() call\n(drm_lastclose() on process exit, in this report) commits the stale\nmode_set through drm_client_modeset_commit() ->\ndrm_client_modeset_commit_atomic() -> __drm_atomic_helper_set_config(),\nwhich hits WARN_ON(!set->fb).\n\nMark fb_helper->deferred_setup on any drm_fb_helper_single_fb_probe()\nfailure, not just -EAGAIN, so restore keeps skipping the commit until\na later hotplug event successfully re-probes and re-populates\nmode_set->fb. The real error code is still returned to the caller\nunchanged.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-10-23 13:17:23","updated_at":"2026-10-30 13:21:35"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/e5f8f6e0f0a18c77c04b757d72319d897a0b4bc1","name":"https://git.kernel.org/stable/c/e5f8f6e0f0a18c77c04b757d72319d897a0b4bc1","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/4a2006c675758f0c765b36fec6b49d17e89159cf","name":"https://git.kernel.org/stable/c/4a2006c675758f0c765b36fec6b49d17e89159cf","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/4e7b508c7c60dec7a86b7eb2a1b7e6d174afa457","name":"https://git.kernel.org/stable/c/4e7b508c7c60dec7a86b7eb2a1b7e6d174afa457","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/423c871a586cff8b29f48db00e3c45c21d0e8121","name":"https://git.kernel.org/stable/c/423c871a586cff8b29f48db00e3c45c21d0e8121","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/755c94d178b7e972bb766199d34e4ba4f63a89eb","name":"https://git.kernel.org/stable/c/755c94d178b7e972bb766199d34e4ba4f63a89eb","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/3b303696f61461b3569019d7fcac6a646652b2b4","name":"https://git.kernel.org/stable/c/3b303696f61461b3569019d7fcac6a646652b2b4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d510ed273854177f0a3ed330145858b2fe667f81","name":"https://git.kernel.org/stable/c/d510ed273854177f0a3ed330145858b2fe667f81","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/9124411cb91b129ff3ffb0d723ecba7a5bf893f9","name":"https://git.kernel.org/stable/c/9124411cb91b129ff3ffb0d723ecba7a5bf893f9","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-99007","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-99007","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ca91a2758fcef6635626993557dd51cfbb6dd134 423c871a586cff8b29f48db00e3c45c21d0e8121 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ca91a2758fcef6635626993557dd51cfbb6dd134 e5f8f6e0f0a18c77c04b757d72319d897a0b4bc1 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ca91a2758fcef6635626993557dd51cfbb6dd134 9124411cb91b129ff3ffb0d723ecba7a5bf893f9 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ca91a2758fcef6635626993557dd51cfbb6dd134 4a2006c675758f0c765b36fec6b49d17e89159cf git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ca91a2758fcef6635626993557dd51cfbb6dd134 3b303696f61461b3569019d7fcac6a646652b2b4 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ca91a2758fcef6635626993557dd51cfbb6dd134 4e7b508c7c60dec7a86b7eb2a1b7e6d174afa457 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ca91a2758fcef6635626993557dd51cfbb6dd134 d510ed273854177f0a3ed330145858b2fe667f81 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ca91a2758fcef6635626993557dd51cfbb6dd134 755c94d178b7e972bb766199d34e4ba4f63a89eb git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.14","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 4.14 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10.273 5.10.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.224 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.191 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.160 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.113 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.57 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.11 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"99007","cve":"CVE-2026-99007","epss":"0.001770000","percentile":"0.072880000","score_date":"2026-11-01","updated_at":"2026-11-02 00:05:55"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/gpu/drm/drm_fb_helper.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"423c871a586cff8b29f48db00e3c45c21d0e8121","status":"affected","version":"ca91a2758fcef6635626993557dd51cfbb6dd134","versionType":"git"},{"lessThan":"e5f8f6e0f0a18c77c04b757d72319d897a0b4bc1","status":"affected","version":"ca91a2758fcef6635626993557dd51cfbb6dd134","versionType":"git"},{"lessThan":"9124411cb91b129ff3ffb0d723ecba7a5bf893f9","status":"affected","version":"ca91a2758fcef6635626993557dd51cfbb6dd134","versionType":"git"},{"lessThan":"4a2006c675758f0c765b36fec6b49d17e89159cf","status":"affected","version":"ca91a2758fcef6635626993557dd51cfbb6dd134","versionType":"git"},{"lessThan":"3b303696f61461b3569019d7fcac6a646652b2b4","status":"affected","version":"ca91a2758fcef6635626993557dd51cfbb6dd134","versionType":"git"},{"lessThan":"4e7b508c7c60dec7a86b7eb2a1b7e6d174afa457","status":"affected","version":"ca91a2758fcef6635626993557dd51cfbb6dd134","versionType":"git"},{"lessThan":"d510ed273854177f0a3ed330145858b2fe667f81","status":"affected","version":"ca91a2758fcef6635626993557dd51cfbb6dd134","versionType":"git"},{"lessThan":"755c94d178b7e972bb766199d34e4ba4f63a89eb","status":"affected","version":"ca91a2758fcef6635626993557dd51cfbb6dd134","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/gpu/drm/drm_fb_helper.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.14"},{"lessThan":"4.14","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.273","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.224","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.191","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.160","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.113","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.57","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.11","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.273","versionStartIncluding":"4.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.224","versionStartIncluding":"4.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.191","versionStartIncluding":"4.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.160","versionStartIncluding":"4.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.113","versionStartIncluding":"4.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.57","versionStartIncluding":"4.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.11","versionStartIncluding":"4.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3","versionStartIncluding":"4.14","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/fb-helper: defer setup when fbdev_probe() fails, not just on -EAGAIN\n\n__drm_fb_helper_initial_config_and_unlock() calls\ndrm_client_modeset_probe() first, which already fills in each\nmode_set->mode/num_connectors for every connected output, and only\nafterwards calls drm_fb_helper_single_fb_probe() to create\nfb_helper->fb and wire it into those mode_sets via\ndrm_setup_crtcs_fb().\n\nIf drm_fb_helper_single_fb_probe() fails with anything other than\n-EAGAIN (e.g. dev->driver->fbdev_probe() itself fails), the function\nbails out before drm_setup_crtcs_fb() runs and before setting\nfb_helper->deferred_setup. The client is left with mode_sets that\nhave a mode and connectors but mode_set->fb == NULL, and nothing\nmarks this fb_helper as needing a retry.\n\n__drm_fb_helper_restore_fbdev_mode_unlocked() only skips committing\nwhen fb_helper->deferred_setup is set, so a later .restore() call\n(drm_lastclose() on process exit, in this report) commits the stale\nmode_set through drm_client_modeset_commit() ->\ndrm_client_modeset_commit_atomic() -> __drm_atomic_helper_set_config(),\nwhich hits WARN_ON(!set->fb).\n\nMark fb_helper->deferred_setup on any drm_fb_helper_single_fb_probe()\nfailure, not just -EAGAIN, so restore keeps skipping the commit until\na later hotplug event successfully re-probes and re-populates\nmode_set->fb. The real error code is still returned to the caller\nunchanged."}],"providerMetadata":{"dateUpdated":"2026-10-30T12:40:51.342Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/423c871a586cff8b29f48db00e3c45c21d0e8121"},{"url":"https://git.kernel.org/stable/c/e5f8f6e0f0a18c77c04b757d72319d897a0b4bc1"},{"url":"https://git.kernel.org/stable/c/9124411cb91b129ff3ffb0d723ecba7a5bf893f9"},{"url":"https://git.kernel.org/stable/c/4a2006c675758f0c765b36fec6b49d17e89159cf"},{"url":"https://git.kernel.org/stable/c/3b303696f61461b3569019d7fcac6a646652b2b4"},{"url":"https://git.kernel.org/stable/c/4e7b508c7c60dec7a86b7eb2a1b7e6d174afa457"},{"url":"https://git.kernel.org/stable/c/d510ed273854177f0a3ed330145858b2fe667f81"},{"url":"https://git.kernel.org/stable/c/755c94d178b7e972bb766199d34e4ba4f63a89eb"}],"title":"drm/fb-helper: defer setup when fbdev_probe() fails, not just on -EAGAIN","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-99007","datePublished":"2026-10-23T12:20:32.381Z","dateReserved":"2026-09-25T10:25:14.385Z","dateUpdated":"2026-10-30T12:40:51.342Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-23 13:17:23","lastModifiedDate":"2026-10-30 13:21:35","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"99007","Ordinal":"1","Title":"drm/fb-helper: defer setup when fbdev_probe() fails, not just on","CVE":"CVE-2026-99007","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"99007","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/fb-helper: defer setup when fbdev_probe() fails, not just on -EAGAIN\n\n__drm_fb_helper_initial_config_and_unlock() calls\ndrm_client_modeset_probe() first, which already fills in each\nmode_set->mode/num_connectors for every connected output, and only\nafterwards calls drm_fb_helper_single_fb_probe() to create\nfb_helper->fb and wire it into those mode_sets via\ndrm_setup_crtcs_fb().\n\nIf drm_fb_helper_single_fb_probe() fails with anything other than\n-EAGAIN (e.g. dev->driver->fbdev_probe() itself fails), the function\nbails out before drm_setup_crtcs_fb() runs and before setting\nfb_helper->deferred_setup. The client is left with mode_sets that\nhave a mode and connectors but mode_set->fb == NULL, and nothing\nmarks this fb_helper as needing a retry.\n\n__drm_fb_helper_restore_fbdev_mode_unlocked() only skips committing\nwhen fb_helper->deferred_setup is set, so a later .restore() call\n(drm_lastclose() on process exit, in this report) commits the stale\nmode_set through drm_client_modeset_commit() ->\ndrm_client_modeset_commit_atomic() -> __drm_atomic_helper_set_config(),\nwhich hits WARN_ON(!set->fb).\n\nMark fb_helper->deferred_setup on any drm_fb_helper_single_fb_probe()\nfailure, not just -EAGAIN, so restore keeps skipping the commit until\na later hotplug event successfully re-probes and re-populates\nmode_set->fb. The real error code is still returned to the caller\nunchanged.","Type":"Description","Title":"drm/fb-helper: defer setup when fbdev_probe() fails, not just on"}]}}}