CVE-2022-50864
nilfs2: fix shift-out-of-bounds due to too large exponent of block size
- Published
- Updated
- Reserved
- Assigned by
- Linux
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.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Deferred.
- EPSS (exploitation in 30 days)
- 0.20% · top 90% of all CVEs (6 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 8a9d2191e9f43bbcd256a9a6871bd73434c83f2f – < ec93b5430ec0f60877a5388bb023d60624f9ab9f
- affected 8a9d2191e9f43bbcd256a9a6871bd73434c83f2f – < 8b6ef451b5701b37d9a5905534595776a662edfc
- affected 8a9d2191e9f43bbcd256a9a6871bd73434c83f2f – < ddb6615a168f97b91175e00eda4c644741cf531c
- affected 8a9d2191e9f43bbcd256a9a6871bd73434c83f2f – < a16731fa1b96226c75bbf18e73513b14fc318360
- affected 8a9d2191e9f43bbcd256a9a6871bd73434c83f2f – < ebeccaaef67a4895d2496ab8d9c2fb8d89201211
- affected 2.6.30
- unaffected < 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.*
- unaffected 6.2 – ≤ *
References (5)
- https://git.kernel.org/stable/c/ec93b5430ec0f60877a5388bb023d60624f9ab9f (opens in a new tab)
- https://git.kernel.org/stable/c/8b6ef451b5701b37d9a5905534595776a662edfc (opens in a new tab)
- https://git.kernel.org/stable/c/ddb6615a168f97b91175e00eda4c644741cf531c (opens in a new tab)
- https://git.kernel.org/stable/c/a16731fa1b96226c75bbf18e73513b14fc318360 (opens in a new tab)
- https://git.kernel.org/stable/c/ebeccaaef67a4895d2496ab8d9c2fb8d89201211 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2022-50864)Record last updated .