CVE-2023-53845

Description

In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix infinite loop in nilfs_mdt_get_block() If the disk image that nilfs2 mounts is corrupted and a virtual block address obtained by block lookup for a metadata file is invalid, nilfs_bmap_lookup_at_level() may return the same internal return code as -ENOENT, meaning the block does not exist in the metadata file. This duplication of return codes confuses nilfs_mdt_get_block(), causing it to read and create a metadata block indefinitely. In particular, if this happens to the inode metadata file, ifile, semaphore i_rwsem can be left held, causing task hangs in lock_mount. Fix this issue by making nilfs_bmap_lookup_at_level() treat virtual block address translation failures with -ENOENT as metadata corruption instead of returning the error code.

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

Product status

References

git.kernel.org/...c/cfb0bb4fbd40c1f06da7e9f88c0a2d46155b90c2

git.kernel.org/...c/d536f9976bb04e9c84cf80045a9355975e418f41

git.kernel.org/...c/fe1cbbcb1a2532ee1654e1ff121be8906d83c6f0

git.kernel.org/...c/8a89d36a07afe1ed4564df51fefa2bb556c85412

git.kernel.org/...c/8d07d9119642ba43d21f8ba64d51d01931096b20

git.kernel.org/...c/25457d07c8146e57d28906c663def033dc425af6

git.kernel.org/...c/34c5f17222b50c79848bb03ec8811648813e6a45

git.kernel.org/...c/5b29661669cb65b9750a3cf70ed3eaf947b92167

git.kernel.org/...c/a6a491c048882e7e424d407d32cba0b52d9ef2bf

cve.org (CVE-2023-53845)

nvd.nist.gov (CVE-2023-53845)

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