In the Linux kernel, the following vulnerability has been resolved:
btrfs: free mapping node on duplicate reloc root insert
__add_reloc_root() allocates a mapping_node before inserting it into rc->reloc_root_tree. If rb_simple_insert() finds an existing entry, it returns the existing rb_node and leaves the newly allocated node unlinked.
The error path then returns -EEXIST without freeing the new node. Since the node was never inserted into reloc_root_tree, the later cleanup in put_reloc_control() cannot find it either.
Free the newly allocated node before returning -EEXIST.
The callers currently assert that -EEXIST should not happen, so this is a defensive cleanup for an unexpected duplicate insert path. If the path is ever reached, the local allocation should still be released.
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade kernel6.12-modules-extraUpgrade kernel6.12-tools-develUpgrade kernel6.12-modules-extra-commonUpgrade kernel6.12-debuginfo-common-x86_64Upgrade kernel6.12-debuginfo-common-aarch64Upgrade bpftool6.12Upgrade python3-perf6.12Upgrade perf6.12-debuginfoUpgrade kernel6.12Upgrade bpftool6.12-debuginfoUpgrade kernel-livepatch-6.12.103-127.188Upgrade kernel6.12-tools-debuginfoUpgrade kernel6.12-develUpgrade python3-perf6.12-debuginfoUpgrade kernel6.12-debuginfoUpgrade kernel6.12-headersUpgrade perf6.12Upgrade kernel6.12-tools | Sep 1, 2026 | Aug 12, 2026 |
| Debian | — | Upgrade linux-6.12Upgrade linux | Aug 13, 2026 | Aug 13, 2026 |
| Redhat_linux | — | No solution exists | Aug 13, 2026 | Aug 12, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Aug 19, 2026 | Aug 12, 2026 |
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