Tracker / CVE-2026-53160
CVE-2026-53160
High 7.8
In the Linux kernel, the following vulnerability has been resolved: misc: fastrpc: fix use-after-free race in fastrpc_map_create fastrpc_map_lookup returns a raw pointer after releasing fl->lock. The caller fastrpc_map_create then calls fastrpc_map_get (kref_get_unless_zero) on this unprotected pointer. A concurrent MEM_UNMAP can free the map between the lock release and the kref operation, resulting in a use-after-free on the freed slab object. Restore the take_ref parameter to fastrpc_map_lookup so the reference is acquired atomically under fl->lock before the pointer is exposed to the caller.
Affected products and versions
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · 6.1.156 → 6.1.176 |
| linux | linux_kernel · 6.12.53 → 6.12.94 |
| linux | linux_kernel · 6.17.3 → 6.18.36 |
| linux | linux_kernel · 6.19 → 7.0.13 |
| linux | linux_kernel · 6.6.112 → 6.6.143 |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.