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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.

PUBLISHED Reserved 2025-12-08 | Published 2025-12-09 | Updated 2025-12-09 | Assigner Linux

Product status

Default status
unaffected

4ec17d688d74b6b7cb10043c57ff4818cde2b0ca (git) before 4e3b4b170bd43db1d8a93a6bd0ea434b17cc86f7
affected

4ec17d688d74b6b7cb10043c57ff4818cde2b0ca (git) before a6807ef0f3b3d8508d3b07a2e35de8a91820a014
affected

4ec17d688d74b6b7cb10043c57ff4818cde2b0ca (git) before 2bef8314fcf94ddc27e22d03f237c0fafd00de33
affected

4ec17d688d74b6b7cb10043c57ff4818cde2b0ca (git) before 00b5587326625d0fddb2a5f5a3d4acd950102ace
affected

4ec17d688d74b6b7cb10043c57ff4818cde2b0ca (git) before 117d4f6687b1f74423b5d398ea95c63b262a8e73
affected

4ec17d688d74b6b7cb10043c57ff4818cde2b0ca (git) before f07a8d61b6ea81bb3cbe0638af40f8824d6147fd
affected

4ec17d688d74b6b7cb10043c57ff4818cde2b0ca (git) before eebaecef0095bb8f493c03982da75c6e7bae1056
affected

4ec17d688d74b6b7cb10043c57ff4818cde2b0ca (git) before 9a5571cff4ffcfc24847df9fd545cc5799ac0ee5
affected

Default status
affected

4.3
affected

Any version before 4.3
unaffected

4.14.308 (semver)
unaffected

4.19.276 (semver)
unaffected

5.4.235 (semver)
unaffected

5.10.173 (semver)
unaffected

5.15.99 (semver)
unaffected

6.1.16 (semver)
unaffected

6.2.3 (semver)
unaffected

6.3 (original_commit_for_fix)
unaffected

References

git.kernel.org/...c/4e3b4b170bd43db1d8a93a6bd0ea434b17cc86f7

git.kernel.org/...c/a6807ef0f3b3d8508d3b07a2e35de8a91820a014

git.kernel.org/...c/2bef8314fcf94ddc27e22d03f237c0fafd00de33

git.kernel.org/...c/00b5587326625d0fddb2a5f5a3d4acd950102ace

git.kernel.org/...c/117d4f6687b1f74423b5d398ea95c63b262a8e73

git.kernel.org/...c/f07a8d61b6ea81bb3cbe0638af40f8824d6147fd

git.kernel.org/...c/eebaecef0095bb8f493c03982da75c6e7bae1056

git.kernel.org/...c/9a5571cff4ffcfc24847df9fd545cc5799ac0ee5

cve.org (CVE-2023-53796)

nvd.nist.gov (CVE-2023-53796)

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