Answer in brief
CVE-2026-90279 records a Unknown severity vulnerability in md/raid5: round bitmap stripes with sector division. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=b29e6400be51c214a0ad30dce937348b57abe33a <9d7490007707f90691911385365bd1d691d99225 || >=aa8e15d69f5c0044d5bff61844e163aacc4ac172 <cab7d949b18b2f1cd625689dc16c5f81236bac93 || >=9c89f604476cf15c31fbbdb043cff7fbf1dbe0cb <02c10581866d08822c6348e299881485fc546185 || >=9c89f604476cf15c31fbbdb043cff7fbf1dbe0cb <ccbdc483eb041eef809e9ff223d1ad63518a2c52 || >=9c89f604476cf15c31fbbdb043cff7fbf1dbe0cb <17ea021ae74987d6064c8195c4922fa025753892 || a41a0df5d7638acf15e723ad985980b4f7ff9383 || >=6.6.79 <6.6.157 || >=6.12.13 <6.12.110 || >=6.13.2 <6.14 | 9d7490007707f90691911385365bd1d691d99225, cab7d949b18b2f1cd625689dc16c5f81236bac93, 02c10581866d08822c6348e299881485fc546185, ccbdc483eb041eef809e9ff223d1ad63518a2c52, 17ea021ae74987d6064c8195c4922fa025753892, 6.6.157, 6.12.110, 6.14 |
| Linux/Linuxgeneric | 6.14 | Not reported |
Published upstream
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 17, 2026
In the Linux kernel, the following vulnerability has been resolved: md/raid5: round bitmap stripes with sector division raid5_bitmap_sector_map() aligns the array range to full RAID5 stripe widths before converting it to component sectors. That width is chunk_sectors multiplied by the number of data disks, and it is not always a power of two. Reproduce with a 4-disk RAID5, 1024-sector chunks, and three data disks. The full-stripe width is 3072 sectors. For a one-sector write at array sector 3072, correct rounding gives array range [3072, 6144), which maps to component range [1024, 2048). The old round_down()/round_up() logic instead gives [1024, 4096), which maps to [0, 1024). Use sector_div() based arithmetic so the rounded range is aligned to the actual RAID5 stripe width. The deterministic mapper test now reports the fixed component range as [1024, 2048), while the old mask-based range was [0, 1024).
Quoted source text, attributed separately from HOL analysis.