{"id":"CVE-2026-80786","state":"PUBLISHED","title":"fbdev: Wrap user-invoked calls to fb_set_var() in helper","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: Wrap user-invoked calls to fb_set_var() in helper\n\nHandle fbcon during display updates in fb_set_var_from_user(). Check\nwith fbcon if the mode change is possible, update hardware state and\nfinally update fbcon. Update all callers.\n\nOnly the FBIOPUT_VSCREENINFO ioctl currently does all steps. Other\nmode-changes callers in sysfs and driver code are missing fbcon-related\nsteps.\n\nWith the new helper, ps3fb and sh_mobile_lcdcfb no longer maintain\nfbcon state themselves.","publishedAt":"2026-09-04T15:12:57.927Z","updatedAt":"2026-10-30T12:31:08.620Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"af39d039b5591e3ebaa2e013862bd8cacc6d9dc3","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"3130e7bf43ecfe3a15bcf90b9698e0764a2d8d08","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"d33589eff3d40439b3c83e8da0d07d20df797d50","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"ed7e9715849abd0816b8487b0d12ebd05d6e938b","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"07f7e46833f71472e30da54a50dacdf48521bdd3","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"6f611e5e5f3327cf2e2daabe6ee5acac58cc784e","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/video/fbdev/core/fb_chrdev.c","drivers/video/fbdev/core/fbcon.c","drivers/video/fbdev/core/fbmem.c","drivers/video/fbdev/core/fbsysfs.c","drivers/video/fbdev/ps3fb.c","drivers/video/fbdev/sh_mobile_lcdcfb.c","include/linux/fb.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.12","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.12","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.114","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.57","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.11","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/video/fbdev/core/fb_chrdev.c","drivers/video/fbdev/core/fbcon.c","drivers/video/fbdev/core/fbmem.c","drivers/video/fbdev/core/fbsysfs.c","drivers/video/fbdev/ps3fb.c","drivers/video/fbdev/sh_mobile_lcdcfb.c","include/linux/fb.h"]}],"references":["https://git.kernel.org/stable/c/af39d039b5591e3ebaa2e013862bd8cacc6d9dc3","https://git.kernel.org/stable/c/3130e7bf43ecfe3a15bcf90b9698e0764a2d8d08","https://git.kernel.org/stable/c/d33589eff3d40439b3c83e8da0d07d20df797d50","https://git.kernel.org/stable/c/ed7e9715849abd0816b8487b0d12ebd05d6e938b","https://git.kernel.org/stable/c/07f7e46833f71472e30da54a50dacdf48521bdd3","https://git.kernel.org/stable/c/6f611e5e5f3327cf2e2daabe6ee5acac58cc784e"],"weaknesses":[],"ingestedAt":"2026-10-30T12:50:04.827Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/80xxx/CVE-2026-80786.json","commit":"1f312381e38164a43607eebab851b151dd16861e","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-80786","state":"PUBLISHED","datePublished":"2026-09-04T15:12:57.927Z","dateUpdated":"2026-10-30T12:31:08.620Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-26T14:34:25.793Z"},"containers":{"cna":{"title":"fbdev: Wrap user-invoked calls to fb_set_var() in helper","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: Wrap user-invoked calls to fb_set_var() in helper\n\nHandle fbcon during display updates in fb_set_var_from_user(). Check\nwith fbcon if the mode change is possible, update hardware state and\nfinally update fbcon. Update all callers.\n\nOnly the FBIOPUT_VSCREENINFO ioctl currently does all steps. Other\nmode-changes callers in sysfs and driver code are missing fbcon-related\nsteps.\n\nWith the new helper, ps3fb and sh_mobile_lcdcfb no longer maintain\nfbcon state themselves."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"af39d039b5591e3ebaa2e013862bd8cacc6d9dc3","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"3130e7bf43ecfe3a15bcf90b9698e0764a2d8d08","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"d33589eff3d40439b3c83e8da0d07d20df797d50","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"ed7e9715849abd0816b8487b0d12ebd05d6e938b","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"07f7e46833f71472e30da54a50dacdf48521bdd3","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"6f611e5e5f3327cf2e2daabe6ee5acac58cc784e","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/video/fbdev/core/fb_chrdev.c","drivers/video/fbdev/core/fbcon.c","drivers/video/fbdev/core/fbmem.c","drivers/video/fbdev/core/fbsysfs.c","drivers/video/fbdev/ps3fb.c","drivers/video/fbdev/sh_mobile_lcdcfb.c","include/linux/fb.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.12","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.12","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.114","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.57","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.11","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/video/fbdev/core/fb_chrdev.c","drivers/video/fbdev/core/fbcon.c","drivers/video/fbdev/core/fbmem.c","drivers/video/fbdev/core/fbsysfs.c","drivers/video/fbdev/ps3fb.c","drivers/video/fbdev/sh_mobile_lcdcfb.c","include/linux/fb.h"]}],"references":[{"url":"https://git.kernel.org/stable/c/af39d039b5591e3ebaa2e013862bd8cacc6d9dc3"},{"url":"https://git.kernel.org/stable/c/3130e7bf43ecfe3a15bcf90b9698e0764a2d8d08"},{"url":"https://git.kernel.org/stable/c/d33589eff3d40439b3c83e8da0d07d20df797d50"},{"url":"https://git.kernel.org/stable/c/ed7e9715849abd0816b8487b0d12ebd05d6e938b"},{"url":"https://git.kernel.org/stable/c/07f7e46833f71472e30da54a50dacdf48521bdd3"},{"url":"https://git.kernel.org/stable/c/6f611e5e5f3327cf2e2daabe6ee5acac58cc784e"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-30T12:31:08.620Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.12.114"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.18.57"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"7.1.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}