{"id":"CVE-2023-53796","state":"PUBLISHED","title":"f2fs: fix information leak in f2fs_move_inline_dirents()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix information leak in f2fs_move_inline_dirents()\n\nWhen converting an inline directory to a regular one, f2fs is leaking\nuninitialized memory to disk because it doesn't initialize the entire\ndirectory block.  Fix this by zero-initializing the block.\n\nThis bug was introduced by commit 4ec17d688d74 (\"f2fs: avoid unneeded\ninitializing when converting inline dentry\"), which didn't consider the\nsecurity implications of leaking uninitialized memory to disk.\n\nThis was found by running xfstest generic/435 on a KMSAN-enabled kernel.","publishedAt":"2025-12-09T00:00:52.919Z","updatedAt":"2026-05-11T19:51:41.550Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"4ec17d688d74b6b7cb10043c57ff4818cde2b0ca","status":"affected","lessThan":"4e3b4b170bd43db1d8a93a6bd0ea434b17cc86f7","versionType":"git"},{"version":"4ec17d688d74b6b7cb10043c57ff4818cde2b0ca","status":"affected","lessThan":"a6807ef0f3b3d8508d3b07a2e35de8a91820a014","versionType":"git"},{"version":"4ec17d688d74b6b7cb10043c57ff4818cde2b0ca","status":"affected","lessThan":"2bef8314fcf94ddc27e22d03f237c0fafd00de33","versionType":"git"},{"version":"4ec17d688d74b6b7cb10043c57ff4818cde2b0ca","status":"affected","lessThan":"00b5587326625d0fddb2a5f5a3d4acd950102ace","versionType":"git"},{"version":"4ec17d688d74b6b7cb10043c57ff4818cde2b0ca","status":"affected","lessThan":"117d4f6687b1f74423b5d398ea95c63b262a8e73","versionType":"git"},{"version":"4ec17d688d74b6b7cb10043c57ff4818cde2b0ca","status":"affected","lessThan":"f07a8d61b6ea81bb3cbe0638af40f8824d6147fd","versionType":"git"},{"version":"4ec17d688d74b6b7cb10043c57ff4818cde2b0ca","status":"affected","lessThan":"eebaecef0095bb8f493c03982da75c6e7bae1056","versionType":"git"},{"version":"4ec17d688d74b6b7cb10043c57ff4818cde2b0ca","status":"affected","lessThan":"9a5571cff4ffcfc24847df9fd545cc5799ac0ee5","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/f2fs/inline.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.3","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.3","versionType":"semver"},{"version":"4.14.308","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.276","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.235","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.173","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.99","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.16","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2.3","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/f2fs/inline.c"]}],"references":["https://git.kernel.org/stable/c/4e3b4b170bd43db1d8a93a6bd0ea434b17cc86f7","https://git.kernel.org/stable/c/a6807ef0f3b3d8508d3b07a2e35de8a91820a014","https://git.kernel.org/stable/c/2bef8314fcf94ddc27e22d03f237c0fafd00de33","https://git.kernel.org/stable/c/00b5587326625d0fddb2a5f5a3d4acd950102ace","https://git.kernel.org/stable/c/117d4f6687b1f74423b5d398ea95c63b262a8e73","https://git.kernel.org/stable/c/f07a8d61b6ea81bb3cbe0638af40f8824d6147fd","https://git.kernel.org/stable/c/eebaecef0095bb8f493c03982da75c6e7bae1056","https://git.kernel.org/stable/c/9a5571cff4ffcfc24847df9fd545cc5799ac0ee5"],"weaknesses":[],"ingestedAt":"2026-10-29T20:06:33.064Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/53xxx/CVE-2023-53796.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-53796","state":"PUBLISHED","datePublished":"2025-12-09T00:00:52.919Z","dateUpdated":"2026-05-11T19:51:41.550Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-12-08T23:58:35.275Z"},"containers":{"cna":{"title":"f2fs: fix information leak in f2fs_move_inline_dirents()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix information leak in f2fs_move_inline_dirents()\n\nWhen converting an inline directory to a regular one, f2fs is leaking\nuninitialized memory to disk because it doesn't initialize the entire\ndirectory block.  Fix this by zero-initializing the block.\n\nThis bug was introduced by commit 4ec17d688d74 (\"f2fs: avoid unneeded\ninitializing when converting inline dentry\"), which didn't consider the\nsecurity implications of leaking uninitialized memory to disk.\n\nThis was found by running xfstest generic/435 on a KMSAN-enabled kernel."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"4ec17d688d74b6b7cb10043c57ff4818cde2b0ca","status":"affected","lessThan":"4e3b4b170bd43db1d8a93a6bd0ea434b17cc86f7","versionType":"git"},{"version":"4ec17d688d74b6b7cb10043c57ff4818cde2b0ca","status":"affected","lessThan":"a6807ef0f3b3d8508d3b07a2e35de8a91820a014","versionType":"git"},{"version":"4ec17d688d74b6b7cb10043c57ff4818cde2b0ca","status":"affected","lessThan":"2bef8314fcf94ddc27e22d03f237c0fafd00de33","versionType":"git"},{"version":"4ec17d688d74b6b7cb10043c57ff4818cde2b0ca","status":"affected","lessThan":"00b5587326625d0fddb2a5f5a3d4acd950102ace","versionType":"git"},{"version":"4ec17d688d74b6b7cb10043c57ff4818cde2b0ca","status":"affected","lessThan":"117d4f6687b1f74423b5d398ea95c63b262a8e73","versionType":"git"},{"version":"4ec17d688d74b6b7cb10043c57ff4818cde2b0ca","status":"affected","lessThan":"f07a8d61b6ea81bb3cbe0638af40f8824d6147fd","versionType":"git"},{"version":"4ec17d688d74b6b7cb10043c57ff4818cde2b0ca","status":"affected","lessThan":"eebaecef0095bb8f493c03982da75c6e7bae1056","versionType":"git"},{"version":"4ec17d688d74b6b7cb10043c57ff4818cde2b0ca","status":"affected","lessThan":"9a5571cff4ffcfc24847df9fd545cc5799ac0ee5","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/f2fs/inline.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.3","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.3","versionType":"semver"},{"version":"4.14.308","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.276","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.235","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.173","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.99","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.16","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2.3","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/f2fs/inline.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/4e3b4b170bd43db1d8a93a6bd0ea434b17cc86f7"},{"url":"https://git.kernel.org/stable/c/a6807ef0f3b3d8508d3b07a2e35de8a91820a014"},{"url":"https://git.kernel.org/stable/c/2bef8314fcf94ddc27e22d03f237c0fafd00de33"},{"url":"https://git.kernel.org/stable/c/00b5587326625d0fddb2a5f5a3d4acd950102ace"},{"url":"https://git.kernel.org/stable/c/117d4f6687b1f74423b5d398ea95c63b262a8e73"},{"url":"https://git.kernel.org/stable/c/f07a8d61b6ea81bb3cbe0638af40f8824d6147fd"},{"url":"https://git.kernel.org/stable/c/eebaecef0095bb8f493c03982da75c6e7bae1056"},{"url":"https://git.kernel.org/stable/c/9a5571cff4ffcfc24847df9fd545cc5799ac0ee5"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:51:41.550Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.3","versionEndExcluding":"4.14.308"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.3","versionEndExcluding":"4.19.276"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.3","versionEndExcluding":"5.4.235"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.3","versionEndExcluding":"5.10.173"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.3","versionEndExcluding":"5.15.99"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.3","versionEndExcluding":"6.1.16"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.3","versionEndExcluding":"6.2.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.3","versionEndExcluding":"6.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}