{"id":"CVE-2022-50767","state":"PUBLISHED","title":"fbdev: smscufx: Fix several use-after-free bugs","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: smscufx: Fix several use-after-free bugs\n\nSeveral types of UAFs can occur when physically removing a USB device.\n\nAdds ufx_ops_destroy() function to .fb_destroy of fb_ops, and\nin this function, there is kref_put() that finally calls ufx_free().\n\nThis fix prevents multiple UAFs.","publishedAt":"2025-12-24T13:05:57.569Z","updatedAt":"2026-05-11T19:25:08.910Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"3c8a63e22a0802fd56380f6ab305b419f18eb6f5","status":"affected","lessThan":"6f2075ea883e5d7730d0c9ebb1bb8e7a1a7e953f","versionType":"git"},{"version":"3c8a63e22a0802fd56380f6ab305b419f18eb6f5","status":"affected","lessThan":"3f40852d671072836fb7ae331a1f28a24223c4e8","versionType":"git"},{"version":"3c8a63e22a0802fd56380f6ab305b419f18eb6f5","status":"affected","lessThan":"70faf9d9b6cc74418716bbf76fe75bd2da10ad4a","versionType":"git"},{"version":"3c8a63e22a0802fd56380f6ab305b419f18eb6f5","status":"affected","lessThan":"5385af2f89bc352fb70753ab41b2bb036190141f","versionType":"git"},{"version":"3c8a63e22a0802fd56380f6ab305b419f18eb6f5","status":"affected","lessThan":"d9ddfeb01fb95ffbbc7031d46a5ee2a5e45cbb86","versionType":"git"},{"version":"3c8a63e22a0802fd56380f6ab305b419f18eb6f5","status":"affected","lessThan":"cc6a7249842fceda7574ceb63275a2d5e99d2862","versionType":"git"},{"version":"3c8a63e22a0802fd56380f6ab305b419f18eb6f5","status":"affected","lessThan":"8d924b262f3178a9b17c17d4306a9f426c508bd9","versionType":"git"},{"version":"3c8a63e22a0802fd56380f6ab305b419f18eb6f5","status":"affected","lessThan":"cc67482c9e5f2c80d62f623bcc347c29f9f648e1","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/video/fbdev/smscufx.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.2","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.2","versionType":"semver"},{"version":"4.9.332","status":"unaffected","lessThanOrEqual":"4.9.*","versionType":"semver"},{"version":"4.14.298","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.264","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.223","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.153","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.77","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.0.7","status":"unaffected","lessThanOrEqual":"6.0.*","versionType":"semver"},{"version":"6.1","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/smscufx.c"]}],"references":["https://git.kernel.org/stable/c/6f2075ea883e5d7730d0c9ebb1bb8e7a1a7e953f","https://git.kernel.org/stable/c/3f40852d671072836fb7ae331a1f28a24223c4e8","https://git.kernel.org/stable/c/70faf9d9b6cc74418716bbf76fe75bd2da10ad4a","https://git.kernel.org/stable/c/5385af2f89bc352fb70753ab41b2bb036190141f","https://git.kernel.org/stable/c/d9ddfeb01fb95ffbbc7031d46a5ee2a5e45cbb86","https://git.kernel.org/stable/c/cc6a7249842fceda7574ceb63275a2d5e99d2862","https://git.kernel.org/stable/c/8d924b262f3178a9b17c17d4306a9f426c508bd9","https://git.kernel.org/stable/c/cc67482c9e5f2c80d62f623bcc347c29f9f648e1"],"weaknesses":[],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/50xxx/CVE-2022-50767.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-50767","state":"PUBLISHED","datePublished":"2025-12-24T13:05:57.569Z","dateUpdated":"2026-05-11T19:25:08.910Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-12-24T13:02:21.546Z"},"containers":{"cna":{"title":"fbdev: smscufx: Fix several use-after-free bugs","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: smscufx: Fix several use-after-free bugs\n\nSeveral types of UAFs can occur when physically removing a USB device.\n\nAdds ufx_ops_destroy() function to .fb_destroy of fb_ops, and\nin this function, there is kref_put() that finally calls ufx_free().\n\nThis fix prevents multiple UAFs."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"3c8a63e22a0802fd56380f6ab305b419f18eb6f5","status":"affected","lessThan":"6f2075ea883e5d7730d0c9ebb1bb8e7a1a7e953f","versionType":"git"},{"version":"3c8a63e22a0802fd56380f6ab305b419f18eb6f5","status":"affected","lessThan":"3f40852d671072836fb7ae331a1f28a24223c4e8","versionType":"git"},{"version":"3c8a63e22a0802fd56380f6ab305b419f18eb6f5","status":"affected","lessThan":"70faf9d9b6cc74418716bbf76fe75bd2da10ad4a","versionType":"git"},{"version":"3c8a63e22a0802fd56380f6ab305b419f18eb6f5","status":"affected","lessThan":"5385af2f89bc352fb70753ab41b2bb036190141f","versionType":"git"},{"version":"3c8a63e22a0802fd56380f6ab305b419f18eb6f5","status":"affected","lessThan":"d9ddfeb01fb95ffbbc7031d46a5ee2a5e45cbb86","versionType":"git"},{"version":"3c8a63e22a0802fd56380f6ab305b419f18eb6f5","status":"affected","lessThan":"cc6a7249842fceda7574ceb63275a2d5e99d2862","versionType":"git"},{"version":"3c8a63e22a0802fd56380f6ab305b419f18eb6f5","status":"affected","lessThan":"8d924b262f3178a9b17c17d4306a9f426c508bd9","versionType":"git"},{"version":"3c8a63e22a0802fd56380f6ab305b419f18eb6f5","status":"affected","lessThan":"cc67482c9e5f2c80d62f623bcc347c29f9f648e1","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/video/fbdev/smscufx.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.2","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.2","versionType":"semver"},{"version":"4.9.332","status":"unaffected","lessThanOrEqual":"4.9.*","versionType":"semver"},{"version":"4.14.298","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.264","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.223","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.153","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.77","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.0.7","status":"unaffected","lessThanOrEqual":"6.0.*","versionType":"semver"},{"version":"6.1","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/smscufx.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/6f2075ea883e5d7730d0c9ebb1bb8e7a1a7e953f"},{"url":"https://git.kernel.org/stable/c/3f40852d671072836fb7ae331a1f28a24223c4e8"},{"url":"https://git.kernel.org/stable/c/70faf9d9b6cc74418716bbf76fe75bd2da10ad4a"},{"url":"https://git.kernel.org/stable/c/5385af2f89bc352fb70753ab41b2bb036190141f"},{"url":"https://git.kernel.org/stable/c/d9ddfeb01fb95ffbbc7031d46a5ee2a5e45cbb86"},{"url":"https://git.kernel.org/stable/c/cc6a7249842fceda7574ceb63275a2d5e99d2862"},{"url":"https://git.kernel.org/stable/c/8d924b262f3178a9b17c17d4306a9f426c508bd9"},{"url":"https://git.kernel.org/stable/c/cc67482c9e5f2c80d62f623bcc347c29f9f648e1"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:25:08.910Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"4.9.332"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"4.14.298"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"4.19.264"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"5.4.223"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"5.10.153"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"5.15.77"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"6.0.7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"6.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}