cbcvebase.
CVE-2026-46129
published 2026-05-28

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…

high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
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

12 ranges
VendorProductVersion rangeFixed in
linuxlinux——
linuxlinux>= 20e8f2de3688082eeafeb93c8900485b7542457e < ae6d6e31ceb72b7697c28a528e4923c08e3c2ef5ae6d6e31ceb72b7697c28a528e4923c08e3c2ef5
linuxlinux>= 58208907c4044a764dbd8896026283905da6d9be < c2670ec4aa49ca226bce9776601e0da37502be07c2670ec4aa49ca226bce9776601e0da37502be07
linuxlinux>= 6.1.162 < 6.1.1756.1.175
linuxlinux>= 6.12.67 < 6.12.886.12.88
linuxlinux>= 6.18.7 < 6.18.306.18.30
linuxlinux>= 6.6.122 < 6.6.1406.6.140
linuxlinux>= 6cb008f1bb23e023dfe615cca5df14570dfc8da5 < 9a060970fd7b5e1c561e4ce73cb9949e4269a7389a060970fd7b5e1c561e4ce73cb9949e4269a738
linuxlinux>= a11224a016d6d1d46a4d9b6573244448a80d4d7f < dd6ade0fdd59218d71a981ae7c937a304e49209cdd6ade0fdd59218d71a981ae7c937a304e49209c
linuxlinux>= a11224a016d6d1d46a4d9b6573244448a80d4d7f < 3f487be81292702a59ea9dbc4088b3360a50e8373f487be81292702a59ea9dbc4088b3360a50e837
linuxlinux>= bb4fa4c0b54aae25e55faeda7f78d0c11b8cd618 < f414b3abbba59ef379a2b3c31f2bdd9358ed5e53f414b3abbba59ef379a2b3c31f2bdd9358ed5e53
linuxlinux_kernel——