AZL-88845
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-88845.json
- JSON Data
- https://api.osv.dev/v1/vulns/AZL-88845
- Upstream
- Published
- 2026-05-28T10:16:32Z
- Modified
- 2026-08-28T17:48:09.784527813Z
- Summary
- CVE-2026-46164 affecting package kernel for versions less than 6.6.141.1-1
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
btrfs: fix double free in createspaceinfosubgroup() error path
When kobjectinitand_add() fails, the call chain is:
createspaceinfosubgroup() -> btrfssysfsaddspaceinfotype() -> kobjectinitandadd() -> failure -> kobjectput(&subgroup->kobj) -> spaceinforelease() -> kfree(sub_group)
Then control returns to createspaceinfosubgroup(), where:
btrfssysfsaddspaceinfotype() returns error -> kfree(subgroup)
Thus, sub_group is freed twice.
Keep parent->subgroup[index] = NULL for the failure path, but after btrfssysfsaddspaceinfotype() has called kobject_put(), let the kobject release callback handle the cleanup.
- References