Answer in brief
CVE-2026-89954 records a Unknown severity vulnerability in mtd: afs: validate v2 image info bounds. 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 | >=b7cf5e2830bbb128699d7635ce8404b7f605bc95 <1bec05a68414cf8d0cab6cb42445b8603f32ffc4 || >=b7cf5e2830bbb128699d7635ce8404b7f605bc95 <3ad8ff12fd44b08af9212ac4883a7e29d2ab7348 || >=b7cf5e2830bbb128699d7635ce8404b7f605bc95 <875daa3c750814ff2e2dc050239c390048f0bcd0 || >=b7cf5e2830bbb128699d7635ce8404b7f605bc95 <da740539e8f370767317e24615349b9342a6e773 || >=b7cf5e2830bbb128699d7635ce8404b7f605bc95 <1edea8900ca3e405c1421d8b5c29f97107874f72 || >=b7cf5e2830bbb128699d7635ce8404b7f605bc95 <18916f475057cbd2fb8ea6ae86e6b85884ad1d53 || >=b7cf5e2830bbb128699d7635ce8404b7f605bc95 <d14e6298139f58a87a87d7022e26a7f37f0ddce7 || >=b7cf5e2830bbb128699d7635ce8404b7f605bc95 <e9290031f736e99ad17c25c00311c92c266843b7 | 1bec05a68414cf8d0cab6cb42445b8603f32ffc4, 3ad8ff12fd44b08af9212ac4883a7e29d2ab7348, 875daa3c750814ff2e2dc050239c390048f0bcd0, da740539e8f370767317e24615349b9342a6e773, 1edea8900ca3e405c1421d8b5c29f97107874f72, 18916f475057cbd2fb8ea6ae86e6b85884ad1d53, d14e6298139f58a87a87d7022e26a7f37f0ddce7, e9290031f736e99ad17c25c00311c92c266843b7 |
| Linux/Linuxgeneric | 5.2 | Not reported |
Published upstream
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 16, 2026
In the Linux kernel, the following vulnerability has been resolved: mtd: afs: validate v2 image info bounds The AFS v2 parser uses footer[8] to locate the image information block inside the current erase block, then uses the image information region_count to walk entries from a fixed local array. The footer offset and region count come from flash contents and are not checked against the erase block or the local image-info array before use. Reject v2 entries whose image information offset would underflow the erase block calculation, and reject region counts that cannot fit in the local image-info array before walking region entries.
Quoted source text, attributed separately from HOL analysis.