Answer in brief
CVE-2026-43309 records a Unknown severity vulnerability in md raid: fix hang when stopping arrays with metadata through dm-raid. 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 | >=0dd84b319352bb8ba64752d4e45396d8b13e6018 <63054027d95200b04f3cf624faa7817e0555d56a || >=0dd84b319352bb8ba64752d4e45396d8b13e6018 <24783dd06de870d646c25207bae186f78195f912 || >=0dd84b319352bb8ba64752d4e45396d8b13e6018 <338378dfffbdbb8d37a18f0a0c0358812671f91e || >=0dd84b319352bb8ba64752d4e45396d8b13e6018 <cefcb9297fbdb6d94b61787b4f8d84f55b741470 || 1678ca35b80a94d474fdc31e2497ce5d7ed52512 || 690b5c90fd2d81fd1d2b6110fa36783232f6dce2 || 8e7fb19f1a744fd34e982633ced756fee0498ef7 || a5a58fab556bfe618b4c9719eb85712d78c6cb10 || 661c01b2181d9413c799127f13143583b69f20fd || f42a9819ba84bed2e609a4dff56af37063dcabdc || >=4.14.292 <4.15 || >=4.19.257 <4.20 || >=5.4.212 <5.5 || >=5.10.140 <5.11 || >=5.15.64 <5.16 || >=5.19.6 <5.20 | 63054027d95200b04f3cf624faa7817e0555d56a, 24783dd06de870d646c25207bae186f78195f912, 338378dfffbdbb8d37a18f0a0c0358812671f91e, cefcb9297fbdb6d94b61787b4f8d84f55b741470, 4.15, 4.20, 5.5, 5.11, 5.16, 5.20 |
| Linux/Linuxgeneric | 6.0 | Not reported |
Published upstream
May 8, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 21, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 21, 2026
In the Linux kernel, the following vulnerability has been resolved: md raid: fix hang when stopping arrays with metadata through dm-raid When using device-mapper's dm-raid target, stopping a RAID array can cause the system to hang under specific conditions. This occurs when: - A dm-raid managed device tree is suspended from top to bottom (the top-level RAID device is suspended first, followed by its underlying metadata and data devices) - The top-level RAID device is then removed Removing the top-level device triggers a hang in the following sequence: the dm-raid destructor calls md_stop(), which tries to flush the write-intent bitmap by writing to the metadata sub-devices. However, these devices are already suspended, making them unable to complete the write-intent operations and causing an indefinite block. Fix: - Prevent bitmap flushing when md_stop() is called from dm-raid destructor context and avoid a quiescing/unquescing cycle which could also cause I/O - Still allow write-intent bitmap flushing when called from dm-raid suspend context This ensures that RAID array teardown can complete successfully even when the underlying devices are in a suspended state. This second patch uses md_is_rdwr() to distinguish between suspend and destructor paths as elaborated on above.
Quoted source text, attributed separately from HOL analysis.