FKIE_CVE-2023-53796

Vulnerability from fkie_nvd - Published: 2025-12-09 01:16 - Updated: 2026-06-17 06:46
Severity
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/00b5587326625d0fddb2a5f5a3d4acd950102ace
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/117d4f6687b1f74423b5d398ea95c63b262a8e73
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2bef8314fcf94ddc27e22d03f237c0fafd00de33
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4e3b4b170bd43db1d8a93a6bd0ea434b17cc86f7
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9a5571cff4ffcfc24847df9fd545cc5799ac0ee5
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a6807ef0f3b3d8508d3b07a2e35de8a91820a014
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/eebaecef0095bb8f493c03982da75c6e7bae1056
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f07a8d61b6ea81bb3cbe0638af40f8824d6147fd
Impacted products
Vendor Product Version
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{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/f2fs/inline.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "4e3b4b170bd43db1d8a93a6bd0ea434b17cc86f7",
              "status": "affected",
              "version": "4ec17d688d74b6b7cb10043c57ff4818cde2b0ca",
              "versionType": "git"
            },
            {
              "lessThan": "a6807ef0f3b3d8508d3b07a2e35de8a91820a014",
              "status": "affected",
              "version": "4ec17d688d74b6b7cb10043c57ff4818cde2b0ca",
              "versionType": "git"
            },
            {
              "lessThan": "2bef8314fcf94ddc27e22d03f237c0fafd00de33",
              "status": "affected",
              "version": "4ec17d688d74b6b7cb10043c57ff4818cde2b0ca",
              "versionType": "git"
            },
            {
              "lessThan": "00b5587326625d0fddb2a5f5a3d4acd950102ace",
              "status": "affected",
              "version": "4ec17d688d74b6b7cb10043c57ff4818cde2b0ca",
              "versionType": "git"
            },
            {
              "lessThan": "117d4f6687b1f74423b5d398ea95c63b262a8e73",
              "status": "affected",
              "version": "4ec17d688d74b6b7cb10043c57ff4818cde2b0ca",
              "versionType": "git"
            },
            {
              "lessThan": "f07a8d61b6ea81bb3cbe0638af40f8824d6147fd",
              "status": "affected",
              "version": "4ec17d688d74b6b7cb10043c57ff4818cde2b0ca",
              "versionType": "git"
            },
            {
              "lessThan": "eebaecef0095bb8f493c03982da75c6e7bae1056",
              "status": "affected",
              "version": "4ec17d688d74b6b7cb10043c57ff4818cde2b0ca",
              "versionType": "git"
            },
            {
              "lessThan": "9a5571cff4ffcfc24847df9fd545cc5799ac0ee5",
              "status": "affected",
              "version": "4ec17d688d74b6b7cb10043c57ff4818cde2b0ca",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/f2fs/inline.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.3"
            },
            {
              "lessThan": "4.3",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.308",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.276",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.235",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.173",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.99",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.16",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.2.*",
              "status": "unaffected",
              "version": "6.2.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "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\u0027t 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\u0027t consider the\nsecurity implications of leaking uninitialized memory to disk.\n\nThis was found by running xfstest generic/435 on a KMSAN-enabled kernel."
    }
  ],
  "id": "CVE-2023-53796",
  "lastModified": "2026-06-17T06:46:05.300",
  "metrics": {},
  "published": "2025-12-09T01:16:51.200",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/00b5587326625d0fddb2a5f5a3d4acd950102ace"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/117d4f6687b1f74423b5d398ea95c63b262a8e73"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2bef8314fcf94ddc27e22d03f237c0fafd00de33"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/4e3b4b170bd43db1d8a93a6bd0ea434b17cc86f7"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/9a5571cff4ffcfc24847df9fd545cc5799ac0ee5"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a6807ef0f3b3d8508d3b07a2e35de8a91820a014"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/eebaecef0095bb8f493c03982da75c6e7bae1056"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f07a8d61b6ea81bb3cbe0638af40f8824d6147fd"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Deferred"
}


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