Answer in brief
CVE-2026-99086 records a Unknown severity vulnerability in dm-integrity: validate the superblock on resume. 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 | >=38625191f32f77a9d5fc7cc15f4f9b78768bfb33 <454b67fcc28c18502e47dfb9f067b04c28628ada || >=118ba36e446c01e3cd34b3eedabf1d9436525e1d <e9ec5cbbaf4dd3a02ae3d81719f4fcb9b609aa8e || >=118ba36e446c01e3cd34b3eedabf1d9436525e1d <fc79aeb86a2c244c1f1894e2d8f2966fe2b60fa2 || 824b9c27d7b600520b95f0cab95a47d1b08a9483 || fb49f209995f729053c6ee728436f98d78a49b6f || c6138af1f5454c2631a837916fda958ea72c0d71 || 3ff70e2e31c419e2230d0c66cb2bfb3b1b414b7f || >=6.18.16 <6.18.58 || >=6.1.165 <6.2 || >=6.6.128 <6.7 || >=6.12.75 <6.13 || >=6.19.6 <6.20 | 454b67fcc28c18502e47dfb9f067b04c28628ada, e9ec5cbbaf4dd3a02ae3d81719f4fcb9b609aa8e, fc79aeb86a2c244c1f1894e2d8f2966fe2b60fa2, 6.18.58, 6.2, 6.7, 6.13, 6.20 |
| Linux/Linuxgeneric | 7.0 | Not reported |
Published upstream
Oct 23, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 23, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 23, 2026
In the Linux kernel, the following vulnerability has been resolved: dm-integrity: validate the superblock on resume dm_integrity_resume() re-reads the superblock from the device so that it picks up the flags and the recalculate position. It performs no validation on the result, while the constructor validates the superblock it reads and sizes all the in-memory structures according to it. The user may modify the superblock on the underlying device while the dm-integrity device is suspended, so that the two no longer agree. In particular, access_journal_data() shifts the journal entry index by ic->sb->log2_sectors_per_block, while ic->journal_section_sectors and the journal page list were computed with the value that was present at constructor time. Increasing log2_sectors_per_block makes the index run past the end of the journal, and dm-integrity then writes 512 bytes through lowmem_page_address(NULL). Snapshot the validated superblock in the constructor and refuse to resume if any of the fields that describe the on-disk geometry changed.
Quoted source text, attributed separately from HOL analysis.