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

Vulnerability from cvelistv5 – Published: 2025-12-09 00:00 – Updated: 2025-12-09 00:00
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
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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{
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          "programFiles": [
            "fs/f2fs/inline.c"
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        }
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      "providerMetadata": {
        "dateUpdated": "2025-12-09T00:00:52.919Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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    "dateReserved": "2025-12-08T23:58:35.275Z",
    "dateUpdated": "2025-12-09T00:00:52.919Z",
    "state": "PUBLISHED"
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  }
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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