{"id":"CVE-2023-54209","state":"PUBLISHED","title":"block: fix blktrace debugfs entries leakage","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nblock: fix blktrace debugfs entries leakage\n\nCommit 99d055b4fd4b (\"block: remove per-disk debugfs files in\nblk_unregister_queue\") moves blk_trace_shutdown() from\nblk_release_queue() to blk_unregister_queue(), this is safe if blktrace\nis created through sysfs, however, there is a regression in corner\ncase.\n\nblktrace can still be enabled after del_gendisk() through ioctl if\nthe disk is opened before del_gendisk(), and if blktrace is not shutdown\nthrough ioctl before closing the disk, debugfs entries will be leaked.\n\nFix this problem by shutdown blktrace in disk_release(), this is safe\nbecause blk_trace_remove() is reentrant.","publishedAt":"2025-12-30T12:11:08.027Z","updatedAt":"2026-05-11T19:57:34.725Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"99d055b4fd4bbb309c6cdb51a0d420669f777944","status":"affected","lessThan":"aa07e56c6a9c7558165690d14eed4fe8babf34fb","versionType":"git"},{"version":"99d055b4fd4bbb309c6cdb51a0d420669f777944","status":"affected","lessThan":"7149e57cf01184fba175589f8fbe9fbf33be02e1","versionType":"git"},{"version":"99d055b4fd4bbb309c6cdb51a0d420669f777944","status":"affected","lessThan":"942e81650b81b4ca62f1d8c61de455c9e7c7e6ca","versionType":"git"},{"version":"99d055b4fd4bbb309c6cdb51a0d420669f777944","status":"affected","lessThan":"dd7de3704af9989b780693d51eaea49a665bd9c2","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["block/genhd.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.19","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.19","versionType":"semver"},{"version":"6.1.39","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.3.13","status":"unaffected","lessThanOrEqual":"6.3.*","versionType":"semver"},{"version":"6.4.4","status":"unaffected","lessThanOrEqual":"6.4.*","versionType":"semver"},{"version":"6.5","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["block/genhd.c"]}],"references":["https://git.kernel.org/stable/c/aa07e56c6a9c7558165690d14eed4fe8babf34fb","https://git.kernel.org/stable/c/7149e57cf01184fba175589f8fbe9fbf33be02e1","https://git.kernel.org/stable/c/942e81650b81b4ca62f1d8c61de455c9e7c7e6ca","https://git.kernel.org/stable/c/dd7de3704af9989b780693d51eaea49a665bd9c2"],"weaknesses":[],"ingestedAt":"2026-10-29T20:06:42.242Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/54xxx/CVE-2023-54209.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-54209","state":"PUBLISHED","datePublished":"2025-12-30T12:11:08.027Z","dateUpdated":"2026-05-11T19:57:34.725Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-12-30T12:06:44.500Z"},"containers":{"cna":{"title":"block: fix blktrace debugfs entries leakage","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nblock: fix blktrace debugfs entries leakage\n\nCommit 99d055b4fd4b (\"block: remove per-disk debugfs files in\nblk_unregister_queue\") moves blk_trace_shutdown() from\nblk_release_queue() to blk_unregister_queue(), this is safe if blktrace\nis created through sysfs, however, there is a regression in corner\ncase.\n\nblktrace can still be enabled after del_gendisk() through ioctl if\nthe disk is opened before del_gendisk(), and if blktrace is not shutdown\nthrough ioctl before closing the disk, debugfs entries will be leaked.\n\nFix this problem by shutdown blktrace in disk_release(), this is safe\nbecause blk_trace_remove() is reentrant."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"99d055b4fd4bbb309c6cdb51a0d420669f777944","status":"affected","lessThan":"aa07e56c6a9c7558165690d14eed4fe8babf34fb","versionType":"git"},{"version":"99d055b4fd4bbb309c6cdb51a0d420669f777944","status":"affected","lessThan":"7149e57cf01184fba175589f8fbe9fbf33be02e1","versionType":"git"},{"version":"99d055b4fd4bbb309c6cdb51a0d420669f777944","status":"affected","lessThan":"942e81650b81b4ca62f1d8c61de455c9e7c7e6ca","versionType":"git"},{"version":"99d055b4fd4bbb309c6cdb51a0d420669f777944","status":"affected","lessThan":"dd7de3704af9989b780693d51eaea49a665bd9c2","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["block/genhd.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.19","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.19","versionType":"semver"},{"version":"6.1.39","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.3.13","status":"unaffected","lessThanOrEqual":"6.3.*","versionType":"semver"},{"version":"6.4.4","status":"unaffected","lessThanOrEqual":"6.4.*","versionType":"semver"},{"version":"6.5","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["block/genhd.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/aa07e56c6a9c7558165690d14eed4fe8babf34fb"},{"url":"https://git.kernel.org/stable/c/7149e57cf01184fba175589f8fbe9fbf33be02e1"},{"url":"https://git.kernel.org/stable/c/942e81650b81b4ca62f1d8c61de455c9e7c7e6ca"},{"url":"https://git.kernel.org/stable/c/dd7de3704af9989b780693d51eaea49a665bd9c2"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:57:34.725Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.1.39"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.3.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.4.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.5"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}