nilfs2: fix use-after-free bug of nilfs_root in nilfs_evict_inode() (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.14 % · percentile 3 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Deferred
Description
In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix use-after-free bug of nilfs_root in nilfs_evict_inode() During unmount process of nilfs2, nothing holds nilfs_root structure after nilfs2 detaches its writer in nilfs_detach_log_writer(). However, since nilfs_evict_inode() uses nilfs_root for some cleanup operations, it may cause use-after-free read if inodes are left in "garbage_list" and released by nilfs_dispose_list() at the end of nilfs_detach_log_writer(). Fix this issue by modifying nilfs_evict_inode() to only clear inode without additional metadata changes that use nilfs_root if the file system is degraded to read-only or the writer is detached.
References
- https://git.kernel.org/stable/c/f31e18131ee2ce80a4da5c808221d25b1ae9ad6d
- https://git.kernel.org/stable/c/2a782ea8ebd712a458466e3103e2881b4f886cb5
- https://git.kernel.org/stable/c/116d53f09ff52e6f98e3fe1f85d8898d6ba26c68
- https://git.kernel.org/stable/c/6b4205ea97901f822004e6c8d59484ccfda03faa
- https://git.kernel.org/stable/c/b8427b8522d9ede53015ba45a9978ba68d1162f5
- https://git.kernel.org/stable/c/acc2a40e428f12780004e1e9fce4722d88f909fd
- https://git.kernel.org/stable/c/fb8e8d58f116d069e5939e1f786ac84e7fa4533e
- https://git.kernel.org/stable/c/9b5a04ac3ad9898c4745cba46ea26de74ba56a8e
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-2023-60102
- GCVE · GCVE-0-2023-53804
CERT-FR advisories
- CERTFR-2026-AVI-0225 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0170 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0108 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected e912a5b66837ee89fb025e67b5efeaa11930c2ce < f31e18131ee2ce80a4da5c808221d25b1ae9ad6d ; affected e912a5b66837ee89fb025e67b5efeaa11930c2ce < 2a782ea8ebd712a458466e3103e2881b4f886cb5 ; affected e912a5b66837ee89fb025e67b5efeaa11930c2ce < 116d53f09ff52e6f98e3fe1f85d8898d6ba26c68 ; affected e912a5b66837ee89fb025e67b5efeaa11930c2ce < 6b4205ea97901f822004e6c8d59484ccfda03faa ; affected e912a5b66837ee89fb025e67b5efeaa11930c2ce < b8427b8522d9ede53015ba45a9978ba68d1162f5 ; affected e912a5b66837ee89fb025e67b5efeaa11930c2ce < acc2a40e428f12780004e1e9fce4722d88f909fd |
| Linux · Linux | affected 2.6.37 ; unaffected 0 < 2.6.37 ; unaffected 4.14.316 ≤ 4.14.* ; unaffected 4.19.284 ≤ 4.19.* ; unaffected 5.4.244 ≤ 5.4.* ; unaffected 5.10.181 ≤ 5.10.* |
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 |