Tracker / CVE-2026-43309
CVE-2026-43309
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.
Prodotti e versioni affette
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · 4.14.292 → 4.15 |
| linux | linux_kernel · 4.19.257 → 4.20 |
| linux | linux_kernel · 5.10.140 → 5.11 |
| linux | linux_kernel · 5.15.64 → 5.16 |
| linux | linux_kernel · 5.19.6 → 6.0 |
| linux | linux_kernel · 5.4.212 → 5.5 |
| linux | linux_kernel · 6.0.1 → 6.18.16 |
| linux | linux_kernel · 6.19 → 6.19.6 |