CVE-2026-68450
CVE CVE-2026-68450EUVD EUVD-2026-57056Published 2026-08-12T00:51:48.000ZLast changed 2026-08-19T16:35:45.000Z
What the advisory describes
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.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux 57a304cfd43b2b4a5b44b8f5dc026abb34183068 <ae0629ff9ccb836416ada129f4edc7efea6eaaad; 5.13; 57a304cfd43b2b4a5b44b8f5dc026abb34183068 <b7c5b8e1d5f0779dfbabc3068b7ac0f12e53b3a8; patch: 6.18.42; 57a304cfd43b2b4a5b44b8f5dc026abb34183068 <92bedc0455552b42ada1a1f42b0e3a8593cdfccc; patch: 5.15.216; patch: 7.1.6; 57a304cfd43b2b4a5b44b8f5dc026abb34183068 <14a8be9428435ee17f17fae7991215c246b7fd43; patch: 0; patch: 7.2; patch: 6.12.101; patch: 6.6.148; 57a304cfd43b2b4a5b44b8f5dc026abb34183068 <797dc567146c7e3c4f8d9680e4fbc76e0a6d9151; patch: 6.1.183; 57a304cfd43b2b4a5b44b8f5dc026abb34183068 <6a8269b6459ed870a8156c106a0f597383907872; 57a304cfd43b2b4a5b44b8f5dc026abb34183068 <29d9746812d8b7c37d594f484e994fd552c3ec33
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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