CVE-2026-46129

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 v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/3f487be81292702a59ea9dbc4088b3360a50e837	Patch
https://git.kernel.org/stable/c/9a060970fd7b5e1c561e4ce73cb9949e4269a738	Patch
https://git.kernel.org/stable/c/ae6d6e31ceb72b7697c28a528e4923c08e3c2ef5	Patch
https://git.kernel.org/stable/c/c2670ec4aa49ca226bce9776601e0da37502be07	Patch
https://git.kernel.org/stable/c/dd6ade0fdd59218d71a981ae7c937a304e49209c	Patch
https://git.kernel.org/stable/c/f414b3abbba59ef379a2b3c31f2bdd9358ed5e53	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:6.19:-::::::
	cpe:2.3:o:linux:linux_kernel:6.19:rc6::::::
	cpe:2.3:o:linux:linux_kernel:6.19:rc7::::::
	cpe:2.3:o:linux:linux_kernel:6.19:rc8::::::

History

No history.

Information

Published : 2026-05-28 10:16

Updated : 2026-06-24 18:10

NVD link : CVE-2026-46129

Mitre link : CVE-2026-46129

CVE.ORG link : CVE-2026-46129

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-415

Double Free

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