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CVE-2026-68450

btrfs: free mapping node on duplicate reloc root insert

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.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 57a304cfd43b2b4a5b44b8f5dc026abb34183068
Version < 29d9746812d8b7c37d594f484e994fd552c3ec33
Status affected
Version 57a304cfd43b2b4a5b44b8f5dc026abb34183068
Version < b7c5b8e1d5f0779dfbabc3068b7ac0f12e53b3a8
Status affected
Version 57a304cfd43b2b4a5b44b8f5dc026abb34183068
Version < 92bedc0455552b42ada1a1f42b0e3a8593cdfccc
Status affected
Version 57a304cfd43b2b4a5b44b8f5dc026abb34183068
Version < 14a8be9428435ee17f17fae7991215c246b7fd43
Status affected
Version 57a304cfd43b2b4a5b44b8f5dc026abb34183068
Version < 797dc567146c7e3c4f8d9680e4fbc76e0a6d9151
Status affected
Version 57a304cfd43b2b4a5b44b8f5dc026abb34183068
Version < ae0629ff9ccb836416ada129f4edc7efea6eaaad
Status affected
Version 57a304cfd43b2b4a5b44b8f5dc026abb34183068
Version < 6a8269b6459ed870a8156c106a0f597383907872
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 5.13
Status affected
Version 0
Version < 5.13
Status unaffected
Version <= 5.15.*
Version 5.15.216
Status unaffected
Version <= 6.1.*
Version 6.1.183
Status unaffected
Version <= 6.6.*
Version 6.6.148
Status unaffected
Version <= 6.12.*
Version 6.12.101
Status unaffected
Version <= 6.18.*
Version 6.18.42
Status unaffected
Version <= 7.1.*
Version 7.1.6
Status unaffected
Version <= *
Version 7.2
Status unaffected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.16% 0.058
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/14a8be9428435ee17f17fae7991215c246b7fd43
https://git.kernel.org/stable/c/6a8269b6459ed870a8156c106a0f597383907872
https://git.kernel.org/stable/c/797dc567146c7e3c4f8d9680e4fbc76e0a6d9151
https://git.kernel.org/stable/c/92bedc0455552b42ada1a1f42b0e3a8593cdfccc
https://git.kernel.org/stable/c/ae0629ff9ccb836416ada129f4edc7efea6eaaad
https://git.kernel.org/stable/c/29d9746812d8b7c37d594f484e994fd552c3ec33
https://git.kernel.org/stable/c/b7c5b8e1d5f0779dfbabc3068b7ac0f12e53b3a8