f2fs: atomic: fix UAF issue on f2fs_inode_info.atomic_inode (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.13 % · percentile 2 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Undergoing Analysis
Description
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.
References
- https://git.kernel.org/stable/c/7d3ae21783e5914c1761ac7d63f882d3d70800e9
- https://git.kernel.org/stable/c/56038756aae68312df00d4aa1d97e51ef3aca725
- https://git.kernel.org/stable/c/a499f77c06050a28c897bdbd86cd2f0721ae0743
- https://git.kernel.org/stable/c/a805fec35c201c59643ddcde713bce4051c8ee27
- https://git.kernel.org/stable/c/e0288584baa5dc41df4a829a023c4c1b33fe53d7
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | Linux |
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary) |
European references
- ENISA EUVD · EUVD-2026-45482
- GCVE · GCVE-0-2026-63816
CERT-FR advisories
- CERTFR-2026-AVI-1333 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1286 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1252 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1229 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1203 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1162 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1031 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0930 — Multiples vulnérabilités dans le noyau Linux de Debian · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 3db1de0e582c358dd013f3703cd55b5fe4076436 < 7d3ae21783e5914c1761ac7d63f882d3d70800e9 ; affected 3db1de0e582c358dd013f3703cd55b5fe4076436 < 56038756aae68312df00d4aa1d97e51ef3aca725 ; affected 3db1de0e582c358dd013f3703cd55b5fe4076436 < a499f77c06050a28c897bdbd86cd2f0721ae0743 ; affected 3db1de0e582c358dd013f3703cd55b5fe4076436 < a805fec35c201c59643ddcde713bce4051c8ee27 ; affected 3db1de0e582c358dd013f3703cd55b5fe4076436 < e0288584baa5dc41df4a829a023c4c1b33fe53d7 ; affected 6db52f1944417c2601182a591a704e2f119c5215 |
| Linux · Linux | affected 5.19 ; unaffected 0 < 5.19 ; unaffected 6.6.145 ≤ 6.6.* ; unaffected 6.12.96 ≤ 6.12.* ; unaffected 6.18.39 ≤ 6.18.* ; unaffected 7.1.3 ≤ 7.1.* |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |