CVE-2023-53796 (GCVE-0-2023-53796)

Vulnerability from cvelistv5 – Published: 2025-12-09 00:00 – Updated: 2026-05-11 19:51
VLAI
Title
f2fs: fix information leak in f2fs_move_inline_dirents()
Summary
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.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 4ec17d688d74b6b7cb10043c57ff4818cde2b0ca , < 4e3b4b170bd43db1d8a93a6bd0ea434b17cc86f7 (git)
Affected: 4ec17d688d74b6b7cb10043c57ff4818cde2b0ca , < a6807ef0f3b3d8508d3b07a2e35de8a91820a014 (git)
Affected: 4ec17d688d74b6b7cb10043c57ff4818cde2b0ca , < 2bef8314fcf94ddc27e22d03f237c0fafd00de33 (git)
Affected: 4ec17d688d74b6b7cb10043c57ff4818cde2b0ca , < 00b5587326625d0fddb2a5f5a3d4acd950102ace (git)
Affected: 4ec17d688d74b6b7cb10043c57ff4818cde2b0ca , < 117d4f6687b1f74423b5d398ea95c63b262a8e73 (git)
Affected: 4ec17d688d74b6b7cb10043c57ff4818cde2b0ca , < f07a8d61b6ea81bb3cbe0638af40f8824d6147fd (git)
Affected: 4ec17d688d74b6b7cb10043c57ff4818cde2b0ca , < eebaecef0095bb8f493c03982da75c6e7bae1056 (git)
Affected: 4ec17d688d74b6b7cb10043c57ff4818cde2b0ca , < 9a5571cff4ffcfc24847df9fd545cc5799ac0ee5 (git)
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Linux Linux Affected: 4.3
Unaffected: 0 , < 4.3 (semver)
Unaffected: 4.14.308 , ≤ 4.14.* (semver)
Unaffected: 4.19.276 , ≤ 4.19.* (semver)
Unaffected: 5.4.235 , ≤ 5.4.* (semver)
Unaffected: 5.10.173 , ≤ 5.10.* (semver)
Unaffected: 5.15.99 , ≤ 5.15.* (semver)
Unaffected: 6.1.16 , ≤ 6.1.* (semver)
Unaffected: 6.2.3 , ≤ 6.2.* (semver)
Unaffected: 6.3 , ≤ * (original_commit_for_fix)
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      "cve": "CVE-2023-53796",
      "id": "CVE-2023-53796",
      "initial_release_date": "2023-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: f2fs: fix information leak in f2fs_move_inline_dirents()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-53796.json",
      "version": "3"
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      "current_release_date": "2026-09-05T17:02:17Z",
      "cve": "CVE-2023-53796",
      "id": "CVE-2023-53796",
      "initial_release_date": "2025-12-10T00:36:12Z",
      "product_status:known_not_affected": "555",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2023-53796",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2023-53796.json",
      "version": "19"
    }
  }
}



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