{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-46065","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-05-13T15:03:33.095Z","datePublished":"2026-05-27T12:57:32.968Z","dateUpdated":"2026-06-19T11:59:14.559Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-06-19T11:59:14.559Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: defio: Disconnect deferred I/O from the lifetime of struct fb_info\n\nHold state of deferred I/O in struct fb_deferred_io_state. Allocate an\ninstance as part of initializing deferred I/O and remove it only after\nthe final mapping has been closed. If the fb_info and the contained\ndeferred I/O meanwhile goes away, clear struct fb_deferred_io_state.info\nto invalidate the mapping. Any access will then result in a SIGBUS\nsignal.\n\nFixes a long-standing problem, where a device hot-unplug happens while\nuser space still has an active mapping of the graphics memory. The hot-\nunplug frees the instance of struct fb_info. Accessing the memory will\noperate on undefined state."}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH"}}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/video/fbdev/core/fb_defio.c","include/linux/fb.h"],"versions":[{"version":"60b59beafba875aef6d378078bce0baf2287ae14","lessThan":"4aab89603b637a2e441b38808c4f6fe7d1184df6","status":"affected","versionType":"git"},{"version":"60b59beafba875aef6d378078bce0baf2287ae14","lessThan":"4fda0d6b45faad44926dd3e4f55f118d899b2e27","status":"affected","versionType":"git"},{"version":"60b59beafba875aef6d378078bce0baf2287ae14","lessThan":"2a40f8bc9bb713329f1c35ffc199ee961a7135b0","status":"affected","versionType":"git"},{"version":"60b59beafba875aef6d378078bce0baf2287ae14","lessThan":"2b53d3a52e8e5403a4f4fb57ac6cad3fd2cb1066","status":"affected","versionType":"git"},{"version":"60b59beafba875aef6d378078bce0baf2287ae14","lessThan":"25c2b77bc463f29ee71a54b883548baf9386a0db","status":"affected","versionType":"git"},{"version":"60b59beafba875aef6d378078bce0baf2287ae14","lessThan":"a0aafb421dd15e935d81543152617f2742cefa70","status":"affected","versionType":"git"},{"version":"60b59beafba875aef6d378078bce0baf2287ae14","lessThan":"9ded47ad003f09a94b6a710b5c47f4aa5ceb7429","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/video/fbdev/core/fb_defio.c","include/linux/fb.h"],"versions":[{"version":"2.6.22","status":"affected"},{"version":"0","lessThan":"2.6.22","status":"unaffected","versionType":"semver"},{"version":"5.15.210","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.176","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.140","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.88","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.30","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.0.4","lessThanOrEqual":"7.0.*","status":"unaffected","versionType":"semver"},{"version":"7.1","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":"2.6.22","versionEndExcluding":"5.15.210"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.22","versionEndExcluding":"6.1.176"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.22","versionEndExcluding":"6.6.140"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.22","versionEndExcluding":"6.12.88"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.22","versionEndExcluding":"6.18.30"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.22","versionEndExcluding":"7.0.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.22","versionEndExcluding":"7.1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/4aab89603b637a2e441b38808c4f6fe7d1184df6"},{"url":"https://git.kernel.org/stable/c/4fda0d6b45faad44926dd3e4f55f118d899b2e27"},{"url":"https://git.kernel.org/stable/c/2a40f8bc9bb713329f1c35ffc199ee961a7135b0"},{"url":"https://git.kernel.org/stable/c/2b53d3a52e8e5403a4f4fb57ac6cad3fd2cb1066"},{"url":"https://git.kernel.org/stable/c/25c2b77bc463f29ee71a54b883548baf9386a0db"},{"url":"https://git.kernel.org/stable/c/a0aafb421dd15e935d81543152617f2742cefa70"},{"url":"https://git.kernel.org/stable/c/9ded47ad003f09a94b6a710b5c47f4aa5ceb7429"}],"title":"fbdev: defio: Disconnect deferred I/O from the lifetime of struct fb_info","x_generator":{"engine":"bippy-1.2.0"}}}}