{"api_version":"1","generated_at":"2026-09-10T23:12:27+00:00","cve":"CVE-2026-80785","urls":{"html":"https://cve.report/CVE-2026-80785","api":"https://cve.report/api/cve/CVE-2026-80785.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-80785","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-80785"},"summary":{"title":"fbdev: serialize mode sysfs access with lock_fb_info()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: serialize mode sysfs access with lock_fb_info()\n\nshow_mode(), show_modes(), and store_mode() access fb_info->modelist\nand fb_info->mode without holding lock_fb_info(). store_modes() takes\nlock_fb_info() while replacing the modelist and freeing the old one.\n\nA concurrent reader or writer can load a pointer to an old modelist\nentry before store_modes() frees it, then dereference freed memory or\nstore a stale freed pointer in fb_info->mode.\n\nTake lock_fb_info() in show_mode(), show_modes(), and store_mode() to\nserialize with store_modes(). In show_mode(), copy the mode to the\nstack and format after dropping the lock. In store_mode(), split\nactivate() into a _locked variant to avoid double-locking, and hold\nthe locks for the modelist walk, mode conversion, activation, and\nfb_info->mode assignment together.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-04 16:18:04","updated_at":"2026-09-07 15:17:32"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/061db6b7a910b8378f3b2df64f8c0a3ddc6e85f2","name":"https://git.kernel.org/stable/c/061db6b7a910b8378f3b2df64f8c0a3ddc6e85f2","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/26135631ed8e487bc6aef70cc41934e258d09bbe","name":"https://git.kernel.org/stable/c/26135631ed8e487bc6aef70cc41934e258d09bbe","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80785","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80785","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 26135631ed8e487bc6aef70cc41934e258d09bbe git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 061db6b7a910b8378f3b2df64f8c0a3ddc6e85f2 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2.6.12","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 2.6.12 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.11 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"80785","cve":"CVE-2026-80785","epss":"0.001550000","percentile":"0.050030000","score_date":"2026-09-07","updated_at":"2026-09-08 00:05:25"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/video/fbdev/core/fbsysfs.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"26135631ed8e487bc6aef70cc41934e258d09bbe","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"061db6b7a910b8378f3b2df64f8c0a3ddc6e85f2","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/video/fbdev/core/fbsysfs.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.12"},{"lessThan":"2.6.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.11","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.11","versionStartIncluding":"2.6.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2","versionStartIncluding":"2.6.12","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: serialize mode sysfs access with lock_fb_info()\n\nshow_mode(), show_modes(), and store_mode() access fb_info->modelist\nand fb_info->mode without holding lock_fb_info(). store_modes() takes\nlock_fb_info() while replacing the modelist and freeing the old one.\n\nA concurrent reader or writer can load a pointer to an old modelist\nentry before store_modes() frees it, then dereference freed memory or\nstore a stale freed pointer in fb_info->mode.\n\nTake lock_fb_info() in show_mode(), show_modes(), and store_mode() to\nserialize with store_modes(). In show_mode(), copy the mode to the\nstack and format after dropping the lock. In store_mode(), split\nactivate() into a _locked variant to avoid double-locking, and hold\nthe locks for the modelist walk, mode conversion, activation, and\nfb_info->mode assignment together."}],"providerMetadata":{"dateUpdated":"2026-09-07T14:21:08.600Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/26135631ed8e487bc6aef70cc41934e258d09bbe"},{"url":"https://git.kernel.org/stable/c/061db6b7a910b8378f3b2df64f8c0a3ddc6e85f2"}],"title":"fbdev: serialize mode sysfs access with lock_fb_info()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-80785","datePublished":"2026-09-04T15:12:57.076Z","dateReserved":"2026-08-26T14:34:25.793Z","dateUpdated":"2026-09-07T14:21:08.600Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-04 16:18:04","lastModifiedDate":"2026-09-07 15:17:32","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"80785","Ordinal":"1","Title":"fbdev: serialize mode sysfs access with lock_fb_info()","CVE":"CVE-2026-80785","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"80785","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: serialize mode sysfs access with lock_fb_info()\n\nshow_mode(), show_modes(), and store_mode() access fb_info->modelist\nand fb_info->mode without holding lock_fb_info(). store_modes() takes\nlock_fb_info() while replacing the modelist and freeing the old one.\n\nA concurrent reader or writer can load a pointer to an old modelist\nentry before store_modes() frees it, then dereference freed memory or\nstore a stale freed pointer in fb_info->mode.\n\nTake lock_fb_info() in show_mode(), show_modes(), and store_mode() to\nserialize with store_modes(). In show_mode(), copy the mode to the\nstack and format after dropping the lock. In store_mode(), split\nactivate() into a _locked variant to avoid double-locking, and hold\nthe locks for the modelist walk, mode conversion, activation, and\nfb_info->mode assignment together.","Type":"Description","Title":"fbdev: serialize mode sysfs access with lock_fb_info()"}]}}}