# CVE-2023-53796: linux: In the Linux kernel, the following vulnerability has been resolved:  f2fs: fix information leak in f2fs_move_inline_d...

CVE-2023-53796 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-53796, released December 9, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2023-53796
- Priority: Routine
- CVSS: n/a
- EPSS: 0.0021
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Dec 9, 2025

## Description

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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.20-1 | [DEBIAN-CVE-2023-53796](https://patchblox.com/security/data/fix/linux/debian-cve-2023-53796.md) | Dec 9, 2025 |
| Linux | linux Debian 13.5 (trixie) | 6.1.20-1 | [DEBIAN-CVE-2023-53796](https://patchblox.com/security/data/fix/linux/debian-cve-2023-53796.md) | Dec 9, 2025 |
| Linux | linux Debian 14 | 6.1.20-1 | [DEBIAN-CVE-2023-53796](https://patchblox.com/security/data/fix/linux/debian-cve-2023-53796.md) | Dec 9, 2025 |

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