Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.1.162, < 6.1.175 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/3f487be81292702a59ea9dbc4088b3360a50e837Patch
- https://git.kernel.org/stable/c/9a060970fd7b5e1c561e4ce73cb9949e4269a738Patch
- https://git.kernel.org/stable/c/ae6d6e31ceb72b7697c28a528e4923c08e3c2ef5Patch
- https://git.kernel.org/stable/c/c2670ec4aa49ca226bce9776601e0da37502be07Patch
- https://git.kernel.org/stable/c/dd6ade0fdd59218d71a981ae7c937a304e49209cPatch
- https://git.kernel.org/stable/c/f414b3abbba59ef379a2b3c31f2bdd9358ed5e53Patch
FAQ
What is CVE-2026-46129?
CVE-2026-46129 is a vulnerability with a CVSS score of 7.8 (HIGH). 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(...
How severe is CVE-2026-46129?
CVE-2026-46129 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-46129?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.