CVE-2023-53796
f2fs: fix information leak in f2fs_move_inline_dirents()
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: f2fs: fix information leak in f2fs_move_inline_dirents() When converting an inline directory to a regular one, f2fs is leaking uninitialized memory to disk because it doesn't initialize the entire directory block. Fix this by zero-initializing the block. This bug was introduced by commit 4ec17d688d74 ("f2fs: avoid unneeded initializing when converting inline dentry"), which didn't consider the security implications of leaking uninitialized memory to disk. This was found by running xfstest generic/435 on a KMSAN-enabled kernel.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Dec 9, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
4ec17d688d74b6b7cb10043c57ff4818cde2b0ca < 4e3b4b170bd43db1d8a93a6bd0ea434b17cc86f7 4ec17d688d74b6b7cb10043c57ff4818cde2b0ca < a6807ef0f3b3d8508d3b07a2e35de8a91820a014 4ec17d688d74b6b7cb10043c57ff4818cde2b0ca < 2bef8314fcf94ddc27e22d03f237c0fafd00de33 4ec17d688d74b6b7cb10043c57ff4818cde2b0ca < 00b5587326625d0fddb2a5f5a3d4acd950102ace 4ec17d688d74b6b7cb10043c57ff4818cde2b0ca < 117d4f6687b1f74423b5d398ea95c63b262a8e73 4ec17d688d74b6b7cb10043c57ff4818cde2b0ca < f07a8d61b6ea81bb3cbe0638af40f8824d6147fd 4ec17d688d74b6b7cb10043c57ff4818cde2b0ca < eebaecef0095bb8f493c03982da75c6e7bae1056 4ec17d688d74b6b7cb10043c57ff4818cde2b0ca < 9a5571cff4ffcfc24847df9fd545cc5799ac0ee5
Linux / Linux
4.3
References
git.kernel.org: https://git.kernel.org/stable/c/4e3b4b170bd43db1d8a93a6bd0ea434b17cc86f7 git.kernel.org: https://git.kernel.org/stable/c/a6807ef0f3b3d8508d3b07a2e35de8a91820a014 git.kernel.org: https://git.kernel.org/stable/c/2bef8314fcf94ddc27e22d03f237c0fafd00de33 git.kernel.org: https://git.kernel.org/stable/c/00b5587326625d0fddb2a5f5a3d4acd950102ace git.kernel.org: https://git.kernel.org/stable/c/117d4f6687b1f74423b5d398ea95c63b262a8e73 git.kernel.org: https://git.kernel.org/stable/c/f07a8d61b6ea81bb3cbe0638af40f8824d6147fd git.kernel.org: https://git.kernel.org/stable/c/eebaecef0095bb8f493c03982da75c6e7bae1056 git.kernel.org: https://git.kernel.org/stable/c/9a5571cff4ffcfc24847df9fd545cc5799ac0ee5