CVE-2026-63818
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
f2fs: validate orphan inode entry count
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 127e670abfa7fa150f6550d620ded930f5bdb4e7 | affected | git | 210c210c92d78fdf5051bc55c5c69044b1a2150a | Unavailable | None listed |
| 127e670abfa7fa150f6550d620ded930f5bdb4e7 | affected | git | ad101d15716f5a24d1fa82a849f80430c805a3dd | Unavailable | None listed |
| 127e670abfa7fa150f6550d620ded930f5bdb4e7 | affected | git | d18c81f5d0ecd5796aa47d66d98f2dd54d8d0f70 | Unavailable | None listed |
| 127e670abfa7fa150f6550d620ded930f5bdb4e7 | affected | git | d2f236196d542ccd8505736e41c3a1d3f0305f6f | Unavailable | None listed |
| 127e670abfa7fa150f6550d620ded930f5bdb4e7 | affected | git | 550511a2470f6d204fa07b331f048bd2d3c51280 | Unavailable | None listed |
| 127e670abfa7fa150f6550d620ded930f5bdb4e7 | affected | git | 8aad54746c251f2c2370118df766c0c82e2d2091 | Unavailable | None listed |
| 127e670abfa7fa150f6550d620ded930f5bdb4e7 | affected | git | 2e12381d4495dc8b0ff042c6856022b2e359835c | Unavailable | None listed |
| 127e670abfa7fa150f6550d620ded930f5bdb4e7 | affected | git | 846c499a65816d13f1186e3090e825e8bb8bcb8b | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 3.8 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 3.8 | Unavailable | None listed |
| 5.10.261 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.212 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.178 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.145 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.96 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.38 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.1.3 | unaffected | semver | Unavailable | 7.1.* | None listed |
| 7.2 | unaffected | original_commit_for_fix | Unavailable | * | None listed |