CVE-2026-23285
Description
In the Linux kernel, the following vulnerability has been resolved: drbd: fix null-pointer dereference on local read error In drbd_request_endio(), READ_COMPLETED_WITH_ERROR is passed to __req_mod() with a NULL peer_device: __req_mod(req, what, NULL, &m); The READ_COMPLETED_WITH_ERROR handler then unconditionally passes this NULL peer_device to drbd_set_out_of_sync(), which dereferences it, causing a null-pointer dereference. Fix this by obtaining the peer_device via first_peer_device(device), matching how drbd_req_destroy() handles the same situation.
How to fix
- linux linux_kernel6.6.130, 6.12.77, 6.18.17, 6.19.7 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 6.4 ≤ v < 6.6.130, 6.7 ≤ v < 6.12.77, 6.13 ≤ v < 6.18.17, 6.19 ≤ v < 6.19.7, 7.0 | 6.6.130, 6.12.77, 6.18.17, 6.19.7 |
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