{"id":"CVE-2023-53055","state":"PUBLISHED","title":"fscrypt: destroy keyring after security_sb_delete()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nfscrypt: destroy keyring after security_sb_delete()\n\nfscrypt_destroy_keyring() must be called after all potentially-encrypted\ninodes were evicted; otherwise it cannot safely destroy the keyring.\nSince inodes that are in-use by the Landlock LSM don't get evicted until\nsecurity_sb_delete(), this means that fscrypt_destroy_keyring() must be\ncalled *after* security_sb_delete().\n\nThis fixes a WARN_ON followed by a NULL dereference, only possible if\nLandlock was being used on encrypted files.","publishedAt":"2025-05-02T15:55:10.138Z","updatedAt":"2026-05-23T15:27:51.023Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"e6f4fd85ef1ee6ab356bfbd64df28c1cb73aee7e","status":"affected","lessThan":"992a3f3e8a0c92151dfdf65fc85567c865fd558a","versionType":"git"},{"version":"d7e7b9af104c7b389a0c21eb26532511bce4b510","status":"affected","lessThan":"d77531fac6a1fd9f1db0195438ba5419d72b96c4","versionType":"git"},{"version":"d7e7b9af104c7b389a0c21eb26532511bce4b510","status":"affected","lessThan":"497ab5d9c7852dfedab2c9de75e41b60e54b7c5d","versionType":"git"},{"version":"d7e7b9af104c7b389a0c21eb26532511bce4b510","status":"affected","lessThan":"ccb820dc7d2236b1af0d54ae038a27b5b6d5ae5a","versionType":"git"},{"version":"391cceee6d435e616f68631e68f5b32d480b1e67","status":"affected","versionType":"git"},{"version":"68d15d6558a386f46d815a6ac39edecad713a1bf","status":"affected","versionType":"git"},{"version":"5.15.78","status":"affected","lessThan":"5.15.105","versionType":"semver"},{"version":"5.10.154","status":"affected","lessThan":"5.11","versionType":"semver"},{"version":"6.0.8","status":"affected","lessThan":"6.1","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/super.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.1","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.1","versionType":"semver"},{"version":"5.15.105","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.22","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2.9","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":["fs/super.c"]}],"references":["https://git.kernel.org/stable/c/992a3f3e8a0c92151dfdf65fc85567c865fd558a","https://git.kernel.org/stable/c/d77531fac6a1fd9f1db0195438ba5419d72b96c4","https://git.kernel.org/stable/c/497ab5d9c7852dfedab2c9de75e41b60e54b7c5d","https://git.kernel.org/stable/c/ccb820dc7d2236b1af0d54ae038a27b5b6d5ae5a"],"weaknesses":[],"ingestedAt":"2026-10-29T20:06:33.064Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/53xxx/CVE-2023-53055.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-53055","state":"PUBLISHED","datePublished":"2025-05-02T15:55:10.138Z","dateUpdated":"2026-05-23T15:27:51.023Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-05-02T15:51:43.547Z"},"containers":{"cna":{"title":"fscrypt: destroy keyring after security_sb_delete()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nfscrypt: destroy keyring after security_sb_delete()\n\nfscrypt_destroy_keyring() must be called after all potentially-encrypted\ninodes were evicted; otherwise it cannot safely destroy the keyring.\nSince inodes that are in-use by the Landlock LSM don't get evicted until\nsecurity_sb_delete(), this means that fscrypt_destroy_keyring() must be\ncalled *after* security_sb_delete().\n\nThis fixes a WARN_ON followed by a NULL dereference, only possible if\nLandlock was being used on encrypted files."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"e6f4fd85ef1ee6ab356bfbd64df28c1cb73aee7e","status":"affected","lessThan":"992a3f3e8a0c92151dfdf65fc85567c865fd558a","versionType":"git"},{"version":"d7e7b9af104c7b389a0c21eb26532511bce4b510","status":"affected","lessThan":"d77531fac6a1fd9f1db0195438ba5419d72b96c4","versionType":"git"},{"version":"d7e7b9af104c7b389a0c21eb26532511bce4b510","status":"affected","lessThan":"497ab5d9c7852dfedab2c9de75e41b60e54b7c5d","versionType":"git"},{"version":"d7e7b9af104c7b389a0c21eb26532511bce4b510","status":"affected","lessThan":"ccb820dc7d2236b1af0d54ae038a27b5b6d5ae5a","versionType":"git"},{"version":"391cceee6d435e616f68631e68f5b32d480b1e67","status":"affected","versionType":"git"},{"version":"68d15d6558a386f46d815a6ac39edecad713a1bf","status":"affected","versionType":"git"},{"version":"5.15.78","status":"affected","lessThan":"5.15.105","versionType":"semver"},{"version":"5.10.154","status":"affected","lessThan":"5.11","versionType":"semver"},{"version":"6.0.8","status":"affected","lessThan":"6.1","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/super.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.1","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.1","versionType":"semver"},{"version":"5.15.105","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.22","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2.9","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":["fs/super.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/992a3f3e8a0c92151dfdf65fc85567c865fd558a"},{"url":"https://git.kernel.org/stable/c/d77531fac6a1fd9f1db0195438ba5419d72b96c4"},{"url":"https://git.kernel.org/stable/c/497ab5d9c7852dfedab2c9de75e41b60e54b7c5d"},{"url":"https://git.kernel.org/stable/c/ccb820dc7d2236b1af0d54ae038a27b5b6d5ae5a"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-23T15:27:51.023Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.78","versionEndExcluding":"5.15.105"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1","versionEndExcluding":"6.1.22"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1","versionEndExcluding":"6.2.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1","versionEndExcluding":"6.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10.154"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0.8"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}