CVE-2026-46129In 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()…
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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
- 7.8 HIGH (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-415
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Undergoing Analysis
- Record last updated
- Jun 24, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
linux linux_kernel linux:linux_kernel | from 6.1.162 before 6.1.175; from 6.6.122 before 6.6.140; from 6.12.67 before 6.12.88; from 6.18.7 before 6.18.30; from 6.19.1 before 7.0.7; 6.19; 6.19; 6.19; and 1 more ranges | NVD |
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
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.