nilfs2: fix shift-out-of-bounds due to too large exponent of block size (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.20 % · percentile 10 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Deferred
Description
In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix shift-out-of-bounds due to too large exponent of block size If field s_log_block_size of superblock data is corrupted and too large, init_nilfs() and load_nilfs() still can trigger a shift-out-of-bounds warning followed by a kernel panic (if panic_on_warn is set): shift exponent 38973 is too large for 32-bit type 'int' Call Trace: <TASK> dump_stack_lvl+0xcd/0x134 ubsan_epilogue+0xb/0x50 __ubsan_handle_shift_out_of_bounds.cold.12+0x17b/0x1f5 init_nilfs.cold.11+0x18/0x1d [nilfs2] nilfs_mount+0x9b5/0x12b0 [nilfs2] ... This fixes the issue by adding and using a new helper function for getting block size with sanity check.
References
- https://git.kernel.org/stable/c/ec93b5430ec0f60877a5388bb023d60624f9ab9f
- https://git.kernel.org/stable/c/8b6ef451b5701b37d9a5905534595776a662edfc
- https://git.kernel.org/stable/c/ddb6615a168f97b91175e00eda4c644741cf531c
- https://git.kernel.org/stable/c/a16731fa1b96226c75bbf18e73513b14fc318360
- https://git.kernel.org/stable/c/ebeccaaef67a4895d2496ab8d9c2fb8d89201211
European references
- ENISA EUVD · EUVD-2022-55834
- GCVE · GCVE-0-2022-50864
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 8a9d2191e9f43bbcd256a9a6871bd73434c83f2f < ec93b5430ec0f60877a5388bb023d60624f9ab9f ; affected 8a9d2191e9f43bbcd256a9a6871bd73434c83f2f < 8b6ef451b5701b37d9a5905534595776a662edfc ; affected 8a9d2191e9f43bbcd256a9a6871bd73434c83f2f < ddb6615a168f97b91175e00eda4c644741cf531c ; affected 8a9d2191e9f43bbcd256a9a6871bd73434c83f2f < a16731fa1b96226c75bbf18e73513b14fc318360 ; affected 8a9d2191e9f43bbcd256a9a6871bd73434c83f2f < ebeccaaef67a4895d2496ab8d9c2fb8d89201211 |
| Linux · Linux | affected 2.6.30 ; unaffected 0 < 2.6.30 ; unaffected 5.10.163 ≤ 5.10.* ; unaffected 5.15.86 ≤ 5.15.* ; unaffected 6.0.16 ≤ 6.0.* ; unaffected 6.1.2 ≤ 6.1.* |
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 |