{"id":"CVE-2026-46285","state":"PUBLISHED","title":"mtd: docg3: fix use-after-free in docg3_release()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmtd: docg3: fix use-after-free in docg3_release()\n\nIn docg3_release(), the docg3 pointer is obtained from\ncascade->floors[0]->priv before the loop that calls\ndoc_release_device() on each floor. doc_release_device() frees the\ndocg3 struct via kfree(docg3) at line 1881. After the loop,\ndocg3->cascade->bch dereferences the already-freed pointer.\n\nFix this by accessing cascade->bch directly, which is equivalent\nsince docg3->cascade points back to the same cascade struct, and\nis already available as a local variable. This also removes the\nnow-unused docg3 local variable.","publishedAt":"2026-06-08T15:41:28.566Z","updatedAt":"2026-06-14T18:06:23.744Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c8ae3f744ddca0da164bcacee42d1d4b6fe7027d","status":"affected","lessThan":"8408655ec8344511667b61d8257dc59c80ee3391","versionType":"git"},{"version":"c8ae3f744ddca0da164bcacee42d1d4b6fe7027d","status":"affected","lessThan":"f5d2ed4ed47d3906e2495a3537a48b127f497a17","versionType":"git"},{"version":"c8ae3f744ddca0da164bcacee42d1d4b6fe7027d","status":"affected","lessThan":"2bf706fe7831b319f23a85b9728f961cfed40c3e","versionType":"git"},{"version":"c8ae3f744ddca0da164bcacee42d1d4b6fe7027d","status":"affected","lessThan":"d26f8c361f751c188b7ebaf8189aa0258968fd98","versionType":"git"},{"version":"c8ae3f744ddca0da164bcacee42d1d4b6fe7027d","status":"affected","lessThan":"16f6588a3b7a2a20d10ad9b766be74c60ba347cc","versionType":"git"},{"version":"c8ae3f744ddca0da164bcacee42d1d4b6fe7027d","status":"affected","lessThan":"d89044889ecd11b0c2f86663597246e9bdd25679","versionType":"git"},{"version":"c8ae3f744ddca0da164bcacee42d1d4b6fe7027d","status":"affected","lessThan":"d49628d63d4e6bbc8a1621afb88e5fc901611bee","versionType":"git"},{"version":"c8ae3f744ddca0da164bcacee42d1d4b6fe7027d","status":"affected","lessThan":"ca19808bc6fac7e29420d8508df569b346b3e339","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/mtd/devices/docg3.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.8","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.8","versionType":"semver"},{"version":"5.10.258","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.209","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.175","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.140","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.86","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.27","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.4","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/mtd/devices/docg3.c"]}],"references":["https://git.kernel.org/stable/c/8408655ec8344511667b61d8257dc59c80ee3391","https://git.kernel.org/stable/c/f5d2ed4ed47d3906e2495a3537a48b127f497a17","https://git.kernel.org/stable/c/2bf706fe7831b319f23a85b9728f961cfed40c3e","https://git.kernel.org/stable/c/d26f8c361f751c188b7ebaf8189aa0258968fd98","https://git.kernel.org/stable/c/16f6588a3b7a2a20d10ad9b766be74c60ba347cc","https://git.kernel.org/stable/c/d89044889ecd11b0c2f86663597246e9bdd25679","https://git.kernel.org/stable/c/d49628d63d4e6bbc8a1621afb88e5fc901611bee","https://git.kernel.org/stable/c/ca19808bc6fac7e29420d8508df569b346b3e339"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/46xxx/CVE-2026-46285.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-46285","state":"PUBLISHED","datePublished":"2026-06-08T15:41:28.566Z","dateUpdated":"2026-06-14T18:06:23.744Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-13T15:03:33.110Z"},"containers":{"cna":{"title":"mtd: docg3: fix use-after-free in docg3_release()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmtd: docg3: fix use-after-free in docg3_release()\n\nIn docg3_release(), the docg3 pointer is obtained from\ncascade->floors[0]->priv before the loop that calls\ndoc_release_device() on each floor. doc_release_device() frees the\ndocg3 struct via kfree(docg3) at line 1881. After the loop,\ndocg3->cascade->bch dereferences the already-freed pointer.\n\nFix this by accessing cascade->bch directly, which is equivalent\nsince docg3->cascade points back to the same cascade struct, and\nis already available as a local variable. This also removes the\nnow-unused docg3 local variable."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c8ae3f744ddca0da164bcacee42d1d4b6fe7027d","status":"affected","lessThan":"8408655ec8344511667b61d8257dc59c80ee3391","versionType":"git"},{"version":"c8ae3f744ddca0da164bcacee42d1d4b6fe7027d","status":"affected","lessThan":"f5d2ed4ed47d3906e2495a3537a48b127f497a17","versionType":"git"},{"version":"c8ae3f744ddca0da164bcacee42d1d4b6fe7027d","status":"affected","lessThan":"2bf706fe7831b319f23a85b9728f961cfed40c3e","versionType":"git"},{"version":"c8ae3f744ddca0da164bcacee42d1d4b6fe7027d","status":"affected","lessThan":"d26f8c361f751c188b7ebaf8189aa0258968fd98","versionType":"git"},{"version":"c8ae3f744ddca0da164bcacee42d1d4b6fe7027d","status":"affected","lessThan":"16f6588a3b7a2a20d10ad9b766be74c60ba347cc","versionType":"git"},{"version":"c8ae3f744ddca0da164bcacee42d1d4b6fe7027d","status":"affected","lessThan":"d89044889ecd11b0c2f86663597246e9bdd25679","versionType":"git"},{"version":"c8ae3f744ddca0da164bcacee42d1d4b6fe7027d","status":"affected","lessThan":"d49628d63d4e6bbc8a1621afb88e5fc901611bee","versionType":"git"},{"version":"c8ae3f744ddca0da164bcacee42d1d4b6fe7027d","status":"affected","lessThan":"ca19808bc6fac7e29420d8508df569b346b3e339","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/mtd/devices/docg3.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.8","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.8","versionType":"semver"},{"version":"5.10.258","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.209","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.175","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.140","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.86","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.27","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.4","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/mtd/devices/docg3.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/8408655ec8344511667b61d8257dc59c80ee3391"},{"url":"https://git.kernel.org/stable/c/f5d2ed4ed47d3906e2495a3537a48b127f497a17"},{"url":"https://git.kernel.org/stable/c/2bf706fe7831b319f23a85b9728f961cfed40c3e"},{"url":"https://git.kernel.org/stable/c/d26f8c361f751c188b7ebaf8189aa0258968fd98"},{"url":"https://git.kernel.org/stable/c/16f6588a3b7a2a20d10ad9b766be74c60ba347cc"},{"url":"https://git.kernel.org/stable/c/d89044889ecd11b0c2f86663597246e9bdd25679"},{"url":"https://git.kernel.org/stable/c/d49628d63d4e6bbc8a1621afb88e5fc901611bee"},{"url":"https://git.kernel.org/stable/c/ca19808bc6fac7e29420d8508df569b346b3e339"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-06-14T18:06:23.744Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"5.10.258"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"5.15.209"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"6.1.175"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"6.6.140"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"6.12.86"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"6.18.27"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"7.0.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"7.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}