SB20260529170 - Double free in Linux kernel btrfs
Published: May 29, 2026
Security Bulletin ID
SB20260529170
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Double free (CVE-ID: CVE-2026-46129)
CWE-ID: CWE-415 - Double Free
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to double free in create_space_info() when handling an error after a failed kobject_init_and_add() call. A local user can trigger the vulnerable error path to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/3f487be81292702a59ea9dbc4088b3360a50e837
- https://git.kernel.org/stable/c/9a060970fd7b5e1c561e4ce73cb9949e4269a738
- https://git.kernel.org/stable/c/c2670ec4aa49ca226bce9776601e0da37502be07
- https://git.kernel.org/stable/c/dd6ade0fdd59218d71a981ae7c937a304e49209c
- https://git.kernel.org/stable/c/f414b3abbba59ef379a2b3c31f2bdd9358ed5e53