CVE-2025-68744 - bpf: Free special fields when update [lru_,]percpu_hash maps

CVE-2025-68744 - bpf: Free special fields when update [lru_,]percpu_hash maps

https://cvefeed.io/rssfeed/latest.atom / Wed, 12/24/2025 - 16:54
CVE ID : CVE-2025-68744
Published : Dec. 24, 2025, 1:16 p.m. | 1 hour, 34 minutes ago
Description : In the Linux kernel, the following vulnerability has been resolved: bpf: Free special fields when update [lru_,]percpu_hash maps As [lru_,]percpu_hash maps support BPF_KPTR_{REF,PERCPU}, missing calls to 'bpf_obj_free_fields()' in 'pcpu_copy_value()' could cause the memory referenced by BPF_KPTR_{REF,PERCPU} fields to be held until the map gets freed. Fix this by calling 'bpf_obj_free_fields()' after 'copy_map_value[,_long]()' in 'pcpu_copy_value()'.
Severity: 0.0 | NA
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