In the Linux kernel, the following vulnerability has been resolved:
btrfs: fix double free in create_space_info_sub_group() error path
When kobject_init_and_add() fails, the call chain is:
create_space_info_sub_group()
-> btrfs_sysfs_add_space_info_type()
-> kobject_init_and_add()
-> failure
-> kobject_put(&sub_group->kobj)
-> space_info_release()
-> kfree(sub_group)
Then control returns to create_space_info_sub_group(), where:
btrfs_sysfs_add_space_info_type() returns error
-> kfree(sub_group)
Thus, sub_group is freed twice.
Keep parent->sub_group[index] = NULL for the failure path, but after
btrfs_sysfs_add_space_info_type() has called kobject_put(), let the
kobject release callback handle the cleanup.
References
Configurations
Configuration 1 (hide)
|
History
10 Jun 2026, 21:14
| Type | Values Removed | Values Added |
|---|---|---|
| CWE | CWE-415 | |
| First Time |
Linux linux Kernel
Linux |
|
| References | () https://git.kernel.org/stable/c/14b22be1dd844383eb03af9b1ee3b6b25d32aeaf - Patch | |
| References | () https://git.kernel.org/stable/c/259af6857a1b4f1e9ef8b780353f9d11c26a22bd - Patch | |
| References | () https://git.kernel.org/stable/c/a7449edf96143f192606ec8647e3167e1ecbd728 - Patch | |
| References | () https://git.kernel.org/stable/c/d2a675f2e238ec96c8e91e2718c1f910c9c8fb21 - Patch | |
| References | () https://git.kernel.org/stable/c/dfd05a16b5c9d1d98b47905f37f2fccda52173d1 - Patch | |
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
30 May 2026, 11:17
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.0 |
28 May 2026, 10:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-05-28 10:16
Updated : 2026-06-10 21:14
NVD link : CVE-2026-46164
Mitre link : CVE-2026-46164
CVE.ORG link : CVE-2026-46164
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-415
Double Free