{"id":"CVE-2023-53820","state":"PUBLISHED","title":"loop: loop_set_status_from_info() check before assignment","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nloop: loop_set_status_from_info() check before assignment\n\nIn loop_set_status_from_info(), lo->lo_offset and lo->lo_sizelimit should\nbe checked before reassignment, because if an overflow error occurs, the\noriginal correct value will be changed to the wrong value, and it will not\nbe changed back.\n\nMore, the original patch did not solve the problem, the value was set and\nioctl returned an error, but the subsequent io used the value in the loop\ndriver, which still caused an alarm:\n\nloop_handle_cmd\n do_req_filebacked\n  loff_t pos = ((loff_t) blk_rq_pos(rq) << 9) + lo->lo_offset;\n  lo_rw_aio\n   cmd->iocb.ki_pos = pos","publishedAt":"2025-12-09T01:24:29.417Z","updatedAt":"2026-05-23T15:31:11.178Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"2035c770bfdbcc82bd52e05871a7c82db9529e0f","status":"affected","lessThan":"6bdf4e6dfb60cbb6121ccf027d97ed2ec97c0bcb","versionType":"git"},{"version":"a217715338fd48f72114725aa7a40e484a781ca7","status":"affected","lessThan":"832580af82ace363205039a8e7c4ef04552ccc1a","versionType":"git"},{"version":"13b2856037a651ba3ab4a8b25ecab3e791926da3","status":"affected","lessThan":"2ea7077748e5d7cc64f1c31342c802fe66ea7426","versionType":"git"},{"version":"b40877b8562c5720d0a7fce20729f56b75a3dede","status":"affected","lessThan":"861021710bba9dfa0749a3c209a6c1773208b1f1","versionType":"git"},{"version":"6858933131d0dadac071c4d33335a9ea4b8e76cf","status":"affected","lessThan":"c79a924ed6afac1708dfd370ba66bcf6a852ced6","versionType":"git"},{"version":"0455bef69028c65065f16bb04635591b2374249b","status":"affected","lessThan":"3e7d0968203d668af6036b9f9199c7b62c8a3581","versionType":"git"},{"version":"c490a0b5a4f36da3918181a8acdc6991d967c5f3","status":"affected","lessThan":"4be26d553a3f1d4f54f25353d1496c562002126d","versionType":"git"},{"version":"c490a0b5a4f36da3918181a8acdc6991d967c5f3","status":"affected","lessThan":"258809bf22bf71d53247856f374f2b1d055f2fd4","versionType":"git"},{"version":"c490a0b5a4f36da3918181a8acdc6991d967c5f3","status":"affected","lessThan":"9f6ad5d533d1c71e51bdd06a5712c4fbc8768dfa","versionType":"git"},{"version":"18e28817cb516b39de6281f6db9b0618b2cc7b42","status":"affected","versionType":"git"},{"version":"adf0112d9b8acb03485624220b4934f69bf13369","status":"affected","versionType":"git"},{"version":"9be7fa7ead18a48940df7b59d993bbc8b9055c15","status":"affected","versionType":"git"},{"version":"4.19.257","status":"affected","lessThan":"4.19.312","versionType":"semver"},{"version":"5.4.212","status":"affected","lessThan":"5.4.274","versionType":"semver"},{"version":"5.10.140","status":"affected","lessThan":"5.10.173","versionType":"semver"},{"version":"5.15.64","status":"affected","lessThan":"5.15.100","versionType":"semver"},{"version":"4.9.327","status":"affected","lessThan":"4.10","versionType":"semver"},{"version":"4.14.292","status":"affected","lessThan":"4.15","versionType":"semver"},{"version":"5.19.6","status":"affected","lessThan":"5.20","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/block/loop.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.0","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.0","versionType":"semver"},{"version":"4.19.312","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.274","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.173","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.100","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.18","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2.5","status":"unaffected","lessThanOrEqual":"6.2.*","versionType":"semver"},{"version":"6.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/block/loop.c"]}],"references":["https://git.kernel.org/stable/c/6bdf4e6dfb60cbb6121ccf027d97ed2ec97c0bcb","https://git.kernel.org/stable/c/832580af82ace363205039a8e7c4ef04552ccc1a","https://git.kernel.org/stable/c/2ea7077748e5d7cc64f1c31342c802fe66ea7426","https://git.kernel.org/stable/c/861021710bba9dfa0749a3c209a6c1773208b1f1","https://git.kernel.org/stable/c/c79a924ed6afac1708dfd370ba66bcf6a852ced6","https://git.kernel.org/stable/c/3e7d0968203d668af6036b9f9199c7b62c8a3581","https://git.kernel.org/stable/c/4be26d553a3f1d4f54f25353d1496c562002126d","https://git.kernel.org/stable/c/258809bf22bf71d53247856f374f2b1d055f2fd4","https://git.kernel.org/stable/c/9f6ad5d533d1c71e51bdd06a5712c4fbc8768dfa"],"weaknesses":[],"ingestedAt":"2026-10-29T20:06:33.064Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/53xxx/CVE-2023-53820.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-53820","state":"PUBLISHED","datePublished":"2025-12-09T01:24:29.417Z","dateUpdated":"2026-05-23T15:31:11.178Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-12-08T23:58:35.278Z"},"containers":{"cna":{"title":"loop: loop_set_status_from_info() check before assignment","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nloop: loop_set_status_from_info() check before assignment\n\nIn loop_set_status_from_info(), lo->lo_offset and lo->lo_sizelimit should\nbe checked before reassignment, because if an overflow error occurs, the\noriginal correct value will be changed to the wrong value, and it will not\nbe changed back.\n\nMore, the original patch did not solve the problem, the value was set and\nioctl returned an error, but the subsequent io used the value in the loop\ndriver, which still caused an alarm:\n\nloop_handle_cmd\n do_req_filebacked\n  loff_t pos = ((loff_t) blk_rq_pos(rq) << 9) + lo->lo_offset;\n  lo_rw_aio\n   cmd->iocb.ki_pos = pos"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"2035c770bfdbcc82bd52e05871a7c82db9529e0f","status":"affected","lessThan":"6bdf4e6dfb60cbb6121ccf027d97ed2ec97c0bcb","versionType":"git"},{"version":"a217715338fd48f72114725aa7a40e484a781ca7","status":"affected","lessThan":"832580af82ace363205039a8e7c4ef04552ccc1a","versionType":"git"},{"version":"13b2856037a651ba3ab4a8b25ecab3e791926da3","status":"affected","lessThan":"2ea7077748e5d7cc64f1c31342c802fe66ea7426","versionType":"git"},{"version":"b40877b8562c5720d0a7fce20729f56b75a3dede","status":"affected","lessThan":"861021710bba9dfa0749a3c209a6c1773208b1f1","versionType":"git"},{"version":"6858933131d0dadac071c4d33335a9ea4b8e76cf","status":"affected","lessThan":"c79a924ed6afac1708dfd370ba66bcf6a852ced6","versionType":"git"},{"version":"0455bef69028c65065f16bb04635591b2374249b","status":"affected","lessThan":"3e7d0968203d668af6036b9f9199c7b62c8a3581","versionType":"git"},{"version":"c490a0b5a4f36da3918181a8acdc6991d967c5f3","status":"affected","lessThan":"4be26d553a3f1d4f54f25353d1496c562002126d","versionType":"git"},{"version":"c490a0b5a4f36da3918181a8acdc6991d967c5f3","status":"affected","lessThan":"258809bf22bf71d53247856f374f2b1d055f2fd4","versionType":"git"},{"version":"c490a0b5a4f36da3918181a8acdc6991d967c5f3","status":"affected","lessThan":"9f6ad5d533d1c71e51bdd06a5712c4fbc8768dfa","versionType":"git"},{"version":"18e28817cb516b39de6281f6db9b0618b2cc7b42","status":"affected","versionType":"git"},{"version":"adf0112d9b8acb03485624220b4934f69bf13369","status":"affected","versionType":"git"},{"version":"9be7fa7ead18a48940df7b59d993bbc8b9055c15","status":"affected","versionType":"git"},{"version":"4.19.257","status":"affected","lessThan":"4.19.312","versionType":"semver"},{"version":"5.4.212","status":"affected","lessThan":"5.4.274","versionType":"semver"},{"version":"5.10.140","status":"affected","lessThan":"5.10.173","versionType":"semver"},{"version":"5.15.64","status":"affected","lessThan":"5.15.100","versionType":"semver"},{"version":"4.9.327","status":"affected","lessThan":"4.10","versionType":"semver"},{"version":"4.14.292","status":"affected","lessThan":"4.15","versionType":"semver"},{"version":"5.19.6","status":"affected","lessThan":"5.20","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/block/loop.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.0","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.0","versionType":"semver"},{"version":"4.19.312","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.274","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.173","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.100","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.18","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2.5","status":"unaffected","lessThanOrEqual":"6.2.*","versionType":"semver"},{"version":"6.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/block/loop.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/6bdf4e6dfb60cbb6121ccf027d97ed2ec97c0bcb"},{"url":"https://git.kernel.org/stable/c/832580af82ace363205039a8e7c4ef04552ccc1a"},{"url":"https://git.kernel.org/stable/c/2ea7077748e5d7cc64f1c31342c802fe66ea7426"},{"url":"https://git.kernel.org/stable/c/861021710bba9dfa0749a3c209a6c1773208b1f1"},{"url":"https://git.kernel.org/stable/c/c79a924ed6afac1708dfd370ba66bcf6a852ced6"},{"url":"https://git.kernel.org/stable/c/3e7d0968203d668af6036b9f9199c7b62c8a3581"},{"url":"https://git.kernel.org/stable/c/4be26d553a3f1d4f54f25353d1496c562002126d"},{"url":"https://git.kernel.org/stable/c/258809bf22bf71d53247856f374f2b1d055f2fd4"},{"url":"https://git.kernel.org/stable/c/9f6ad5d533d1c71e51bdd06a5712c4fbc8768dfa"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-23T15:31:11.178Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19.257","versionEndExcluding":"4.19.312"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4.212","versionEndExcluding":"5.4.274"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10.140","versionEndExcluding":"5.10.173"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.64","versionEndExcluding":"5.15.100"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"6.1.18"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"6.2.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"6.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9.327"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14.292"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19.6"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}