Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: f2fs: validate orphan inode entry count f2fs_recover_orphan_inodes() trusts the orphan block entry_count when replaying orphan inodes from the checkpoint pack. A corrupted entry_count larger than F2FS_ORPHANS_PER_BLOCK makes the recovery loop read past the ino[] array and interpret footer or following data as inode numbers. On a crafted image, mounting an unpatched kernel can drive orphan recovery into f2fs_bug_on() and panic the kernel. Validate entry_count before consuming entries so corrupted checkpoint data fails the mount with -EFSCORRUPTED and requests fsck instead. Set ERROR_INCONSISTENT_ORPHAN as well, so the corruption reason can be recorded in the superblock s_errors[] field. This gives fsck a persistent hint even though mount-time orphan recovery failure may leave no chance to persist SBI_NEED_FSCK through a checkpoint.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 127e670abfa7fa150f6550d620ded930f5bdb4e7 before 210c210c92d78fdf5051bc55c5c69044b1a2150a; affected 127e670abfa7fa150f6550d620ded930f5bdb4e7 before ad101d15716f5a24d1fa82a849f80430c805a3dd; affected 127e670abfa7fa150f6550d620ded930f5bdb4e7 before d18c81f5d0ecd5796aa47d66d98f2dd54d8d0f70; affected 127e670abfa7fa150f6550d620ded930f5bdb4e7 before d2f236196d542ccd8505736e41c3a1d3f0305f6f; affected 127e670abfa7fa150f6550d620ded930f5bdb4e7 before 550511a2470f6d204fa07b331f048bd2d3c51280; affected 127e670abfa7fa150f6550d620ded930f5bdb4e7 before 8aad54746c251f2c2370118df766c0c82e2d2091; affected 127e670abfa7fa150f6550d620ded930f5bdb4e7 before 2e12381d4495dc8b0ff042c6856022b2e359835c; affected 127e670abfa7fa150f6550d620ded930f5bdb4e7 before 846c499a65816d13f1186e3090e825e8bb8bcb8b |
| Linux / Linux | affected 3.8; unaffected 0 before 3.8; unaffected 5.10.261 through 5.10.*; unaffected 5.15.212 through 5.15.*; unaffected 6.1.178 through 6.1.*; unaffected 6.6.145 through 6.6.*; unaffected 6.12.96 through 6.12.*; unaffected 6.18.38 through 6.18.*; unaffected 7.1.3 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/210c210c92d78fdf5051bc55c5c69044b1a2150a
- https://git.kernel.org/stable/c/ad101d15716f5a24d1fa82a849f80430c805a3dd
- https://git.kernel.org/stable/c/d18c81f5d0ecd5796aa47d66d98f2dd54d8d0f70
- https://git.kernel.org/stable/c/d2f236196d542ccd8505736e41c3a1d3f0305f6f
- https://git.kernel.org/stable/c/550511a2470f6d204fa07b331f048bd2d3c51280
- https://git.kernel.org/stable/c/8aad54746c251f2c2370118df766c0c82e2d2091
- https://git.kernel.org/stable/c/2e12381d4495dc8b0ff042c6856022b2e359835c
- https://git.kernel.org/stable/c/846c499a65816d13f1186e3090e825e8bb8bcb8b