Tracker / CVE-2026-46129
CVE-2026-46129
High 7.8
In the Linux kernel, the following vulnerability has been resolved: btrfs: fix double free in create_space_info() error path When kobject_init_and_add() fails, the call chain is: create_space_info() -> btrfs_sysfs_add_space_info_type() -> kobject_init_and_add() -> failure -> kobject_put(&space_info->kobj) -> space_info_release() -> kfree(space_info) Then control returns to create_space_info(): btrfs_sysfs_add_space_info_type() returns error -> goto out_free -> kfree(space_info) This causes a double free. Keep the direct kfree(space_info) for the earlier failure path, but after btrfs_sysfs_add_space_info_type() has called kobject_put(), let the kobject release callback handle the cleanup.
Affected products and versions
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · 6.1.162 → 6.1.175 |
| linux | linux_kernel · 6.12.67 → 6.12.88 |
| linux | linux_kernel · 6.18.7 → 6.18.30 |
| linux | linux_kernel · 6.19.1 → 7.0.7 |
| linux | linux_kernel · 6.6.122 → 6.6.140 |
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.