CVE-2026-63816
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: atomic: fix UAF issue on f2fs_inode_info.atomic_inode
In the Linux kernel, the following vulnerability has been resolved: f2fs: atomic: fix UAF issue on f2fs_inode_info.atomic_inode - ioctl(F2FS_IOC_GARBAGE_COLLECT_RANGE) - shrink - f2fs_gc - gc_data_segment - ra_data_block(cow_inode) - mapping = F2FS_I(inode)->atomic_inode->i_mapping : f2fs_is_cow_file(cow_inode) is true - f2fs_evict_inode(atomic_inode) - clear_inode_flag(fi->cow_inode, FI_COW_FILE) - F2FS_I(fi->cow_inode)->atomic_inode = NULL ... - truncate_inode_pages_final(atomic_inode) - f2fs_grab_cache_folio(mapping) : create folio in atomic_inode->mapping - clear_inode(atomic_inode) - BUG_ON(atomic_inode->i_data.nrpages) We need to add a reference on fi->atomic_inode before using its mapping field during garbage collection, otherwise, it will cause UAF issue.
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) |
|---|---|---|---|---|---|
| 3db1de0e582c358dd013f3703cd55b5fe4076436 | affected | git | 7d3ae21783e5914c1761ac7d63f882d3d70800e9 | Unavailable | None listed |
| 3db1de0e582c358dd013f3703cd55b5fe4076436 | affected | git | 56038756aae68312df00d4aa1d97e51ef3aca725 | Unavailable | None listed |
| 3db1de0e582c358dd013f3703cd55b5fe4076436 | affected | git | a499f77c06050a28c897bdbd86cd2f0721ae0743 | Unavailable | None listed |
| 3db1de0e582c358dd013f3703cd55b5fe4076436 | affected | git | a805fec35c201c59643ddcde713bce4051c8ee27 | Unavailable | None listed |
| 3db1de0e582c358dd013f3703cd55b5fe4076436 | affected | git | e0288584baa5dc41df4a829a023c4c1b33fe53d7 | Unavailable | None listed |
| 6db52f1944417c2601182a591a704e2f119c5215 | affected | git | Unavailable | Unavailable | None listed |
| 5.18.18 | affected | semver | 5.19 | 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) |
|---|---|---|---|---|---|
| 5.19 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.19 | Unavailable | None listed |
| 6.6.145 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.96 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.39 | 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 |